The reaction pcl3(g)+cl2(g)←−→pcl5(g) has kp=0.0870 at 300 ∘c. a flask is charged with 0.50atmpcl3, 0.50atmcl2, and 0.20atmpcl5 at this temperature. part a use the reaction quotient to determine the direction the reaction must proceed in order to reach equilibrium.

Answers

Answer 1
The question only asks regarding the direction of the equilibrium reaction. The general expression of Kp is:

Kp = [PCl₅]/[PCl₃][Cl₂]

The higher the value of K (greater than 1), the more spontaneous the reaction (favors the product side). Otherwise, it favors the reactant side. Since Kp = 0.087 which is less than 1, the direction favors the forward reaction towards the product side.
Answer 2

Given, equilibrium constant  Kp = 0.0870

Pressure of PCl₃ = 0.50 atm

Pressure of Cl₂ =  0.50 atm

Pressure of PCl₅ = 0.20 atm

Reaction quotient, Q =  [tex]\frac{0.20 atm}{0.50 atm x 0.50 atm}[/tex]

Q = 0.8

Q > K, net reaction is to the left

Q= K, no net reaction

Q < K, net reaction is to the right

Q = 0.8  and Kp = 0.0870

Q is greater than K, so the net reaction is to the left or to the reactant side.

Therefore, the reaction must proceed to the left or to the reactant side in order to reach equilibrium.


Related Questions

Use the periodic table to determine the electron configuration for Cl and Y in noble-gas notation. Y: [Xe]5s25d1 [Kr]5s24d1 [Kr]5s24d2 [Ar]4s23d104p65s25d1

Answers

Final answer:

The noble gas notation for chlorine (Cl) is [Ne]3s²3p⁵ and for yttrium (Y) is [Kr]5s²4d¹. This notation represents the core electrons with the symbol of the nearest preceding noble gas and the valence electron configuration thereafter.

Explanation:Noble Gas Notation for Chlorine (Cl) and Yttrium (Y)

To find the electron configuration of an element in noble-gas notation, you locate the nearest noble gas that comes before the element in the periodic table. You use the noble gas to represent the core electrons and then add the remaining valence electron configuration.

For chlorine (Cl), which has 17 electrons, the nearest noble gas is neon (Ne), which has 10 electrons. Therefore, the noble-gas notation for chlorine is [Ne]3s²3p⁵.

For yttrium (Y), with 39 electrons, the nearest noble gas is krypton (Kr), which has 36 electrons. The remaining 3 electrons go into the 5s and 4d orbitals. Therefore, the noble-gas notation for yttrium is [Kr]5s²4d¹.

Which of the group ivb (14) metals is the least active?

Answers

The answer is Geranium. If we look at the periodic table, geranium is the topmost metal in period 14, meaning it is the least active since the top elements are less active.

For basic solutions, which element is added to balance half-reactions?

chlorine
hydroxide
iron
nitrogen

Answers

Upon addition to water, chlorine forms hypochlorous acid which can neutralize basic solutions.

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Answer: Hydroxide ion

Explanation: The question is to balance half -reactions in basic solutions(medium) and not to neutralize the basic solutions.

In acidic medium, half-reactions are balanced by adding [tex]H^+[/tex] and [tex]H_2O[/tex] where as the half-reactions in basic medium are balanced by adding [tex]OH^-[/tex] and [tex]H_2O[/tex] .

As the question asks about balancing  half-reactions in basic solutions, the right choice is hydroxide ion.

Chlorine, Iron or nitrogen are not used for balancing half reactions.

Water (H2O) forms when hydrogen gas (H2) and oxygen gas (O2) react according to the equation below: 2H2 +O2 → 2H2O What mass of water forms when 1.45 × 10-3 g O2 react completely? (Molar mass of O2 = 32.00 g/mol; molar mass of H2O = 18.02 g/mol)

Answers

the mass of water that forms is1.63 * 10^-3g

The answer is A

1.63 × 10-3 g

Which element has the same number of valence electrons as oxygen——. a. Neon—b. Nitrogen—c. Sulfur—d. Fluorine

Answers

Sulfur, they both have 6 valence electrons.

Sulfur is the element that has the same number of valence electrons as oxygen, as both belong to Group 6A of the periodic table.

The element that has the same number of valence electrons as oxygen is sulfur (c). Oxygen is in Group 6A on the periodic table, which means it has six valence electrons. Sulfur, which is also in Group 6A, has the same number of valence electrons as oxygen. The completion of the valence shell is of great importance because it determines the bonding behavior and reactivity of an element. This is a part of the periodic table's systematic organization, where elements in the same group have identical valence electron configurations and exhibit similar chemical properties.

Is sodium hydroxide dissolving in water a physical change?

Answers

No it is a chemical change.

How many moles of zinc, Zn, are in 0.535g of zinc?

Answers

0.00818 mole of zinc.                                                                        .............................................................................

Answer: The amount of zinc for a given amount are 0.0082 moles.

Explanation:

To calculate the number of moles, we use the equation:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex]

We are given:

Given mass of zinc = 0.535 g

Molar mass of zinc = 65.4 g/mol

Putting values in above equation, we get:

[tex]\text{Moles of zinc}=\frac{0.535g}{65.4g/mol}=0.0082mol[/tex]

Hence, the amount of zinc for a given amount are 0.0082 moles

-What is the frequency of a 5.6 x 10^10 cm wave?
-What is the wavelength of 0.1096 Hz wave?

Answers

I attached the working and the answer to both questions below.

Please note that C = speed of light, ν = frequency, λ= wavelength

Based on that, the frequency of a 5.6 x 10^10 cm wave 0.545 s⁻¹
 & the wavelength of 0.1096 Hz wave is 2.74 x 10¹¹ cm

The carbon-carbon bond in ethylene, h2cch2, results from the overlap of __________. sp3 hybrid orbitals

Answers

The carbon-carbon bond in ethylene, h2cch2, results from the overlap of sp2 hybrid orbitals.

The correct option is (D).

1. Hybridization in Ethylene:

  - Ethylene [tex](\( \text{H}_2\text{C}=\text{CH}_2 \))[/tex] is a molecule composed of two carbon atoms double-bonded to each other and each carbon atom is also bonded to two hydrogen atoms.

  - The carbon atoms in ethylene undergo sp2 hybridization to form the π bond between them.

2. Explanation of sp2 Hybridization:

  - In sp2 hybridization, one ( s ) orbital and two ( p ) orbitals of the carbon atom combine to form three sp2 hybrid orbitals.

  - These sp2 hybrid orbitals are arranged in a trigonal planar geometry with bond angles of approximately 120 degrees.

  - One of the sp2 hybrid orbitals overlaps with an sp2 orbital from the other carbon atom to form the σ bond between the two carbon atoms.

  - The remaining two sp2 hybrid orbitals on each carbon atom form sigma bonds with hydrogen atoms.

3. Formation of the π Bond:

  - The remaining unhybridized ( p ) orbital on each carbon atom is perpendicular to the plane formed by the sp2 hybrid orbitals.

  - These unhybridized ( p ) orbitals overlap laterally to form the π bond between the carbon atoms.

  - This lateral overlap of the ( p ) orbitals allows for the formation of the π bond, which is responsible for the double bond character between the carbon atoms in ethylene.

4. Conclusion:

  - Thus, the π bond in ethylene results from the overlap of unhybridized ( p ) atomic orbitals, making option D) sp2 hybrid orbitals the correct answer.

complete question given below:

The π bond in ethylene, H2C=CH2, results from the overlap of ________. A) sp3 hybrid orbitals B) s atomic orbitals C) sp hybrid orbitals D) sp2 hybrid orbitals E) p atomic orbitals

What type of molecule is the molecule seen below? ch3—ch2—ch2—ch2 protein nucleic acid sugar lipid hydrocarbon?

Answers

There is an organic molecule. This means that it is made up of carbon and hydrogen atoms and forms the building blocks of the molecules within living creatures and organisms. This molecule is a hydrocarbon and is made completely out of carbon and hydrogen atoms.

Why is a foaming antacid tablet fizzing in water a chemical change?

Answers

A chemical change refers to a process by which a substance becomes a new and different substance. The fizzing of the tablet (also called effervescence) indicates that a gas is being produced. The gas being produced is an indication of a chemical reaction. A chemical reaction is a process in which substances undergo physical and chemical changes that result in the formation of new substances that have different properties.  
Final answer:

A foaming antacid tablet fizzing in water is a chemical change because it involves a chemical reaction that produces new substances, namely carbon dioxide gas.

Explanation:

A foaming antacid tablet fizzing in water is considered a chemical change because it involves a chemical reaction that produces new substances. When the tablet comes in contact with water, it reacts with the water to release carbon dioxide gas. This reaction is known as an acid-base reaction, in which the active ingredient in the antacid tablet reacts with the water, producing carbon dioxide gas bubbles.

This chemical reaction can be represented by the following equation:

Active ingredient + Water → Carbon dioxide gas + Other products

The formation of new substances, in this case, the production of carbon dioxide gas, is a characteristic of a chemical change.

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Which of the following features would be most affected by weathering

Answers

It would be mountain.

Answer: Glaciers

Explanation:

What is a function of water in a cell?                                                               A) producing lipids and carbohydrates B) helping the cell move and grow C) assisting in the production of proteins D) preventing rapid temperature changes

Answers

A producing lipids and carbohydrates

Identify the atomic number and the chemical symbol for lead, silver, and gold. drag each item to the appropriate bin.

Answers

Lead-
Atomic number: 82Symbol: Pb
Silver-
Atomic number: 47Symbol: Ag
Gold-
Atomic number: 79Symbol: Au

Answer :

The atomic number of lead is, 82. The chemical symbol of lead is, Pb.

The atomic number of silver is, 47. The chemical symbol of silver is, Ag.

The atomic number of gold is, 79. The chemical symbol of gold is, Au.

Explanation :

Atomic number : It is equal to the number of protons or electrons.

Atomic number = number of protons = number of electrons

Mass number : It is defined as the sum of number of protons and number of neutrons.

Number of neutrons = Mass number - Number of protons

As we know that:

Lead is a metal that belongs to group 14 and period 6. The atomic number of lead is, 82. The chemical symbol of lead is, Pb.

Silver is a transition metal that belongs to group 11 and period 5. The atomic number of silver is, 47. The chemical symbol of silver is, Ag.

Gold is a transition metal that belongs to group 11 and period 6. The atomic number of gold is, 79. The chemical symbol of gold is, Au.

Consider a neutral atom with 30 protons and 34 neutrons. the number of electrons in this atom is ________.

Answers

Consider a neutral atom with 30 protons and 34 neutrons. The number of electrons in this atom is 30. 

The number of electrons in the given neutral atom is equal to 30.

What is a neutral atom?

A neutral atom is one in which the number of the positive charge is equal to the number of the negative charge. Therefore, the overall charge on the atom is zero. Therefore, that type of atom is called a neutral atom.

For a neutral atom, we generally say that the number of electrons is equal to the number of protons. All chemical elements arranged in the periodic table are neutral.

Given, the number of protons is equal to 30 and the number of neutrons is equal to 34. As the given atom is a neutral atom,

So, the number of electrons = Number of protons.

The number of electrons for the neutral atom = 30.

Therefore, the number of electrons in the atom is 30.

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What does HYDROPHOBIC mean?

What does HYDROPHILIC mean?

Answers

Hydrophobic means to repel or fail to mix water.
Hydrophilic means to mix or get moistened by water.

Hydrophobic substances, which are 'water-fearing,' repel and don't mix with water, while hydrophilic substances are 'water-loving,' attracted to, and dissolve in water due to their polar or charged nature.

The terms hydrophobic and hydrophilic refer to the affinity, or lack thereof, that a molecule has towards water. A hydrophobic substance is one that is 'water-fearing,' meaning it repels water and does not dissolve or get wetted by it. This is often due to a lack of polar or charged groups that can form hydrogen bonds with water molecules. Common hydrophobic substances include nonpolar hydrocarbons and lipids such as fats and cholesterol.

In contrast, a hydrophilic substance is 'water-loving' and is attracted to water. Such substances can dissolve in or be wetted by water due to the presence of polar or charged groups that interact favorably with water. A hydrophile is a molecule like sugar or salt that is readily dissolved by water.

The azide ion, n−3, is a symmetrical ion, all of whose contributing structures have formal charges. draw three important contributing structures for this ion.

Answers

The azide ion N3- can actually be represented by 3 resonance structures.

(check attached image for the structures)

 

Among the three, the Structure 1 is the most important one. While structure 3 almost makes no contribution due to the positive charges located on the adjacent atoms and the overall higher formal charge.

Azide ion has [tex]\boxed{{\text{three}}}[/tex] resonating structures (For structures, refer to the attached image).

Further Explanation:

The bonding between the different atoms in covalent molecules is shown by some diagrams known as the Lewis structures. These also show the presence of lone pairs in the molecule. These are also known as Lewis dot diagrams, electron dot diagrams, Lewis dot structures or Lewis dot formula. In covalent compounds, the geometry, polarity, and reactivity are predicted by these structures.

When more than one Lewis structures are possible for a single molecule but no single structure is able to explain all the properties of the molecule then resonance is used. All the structures thus formed are called resonating structures and the phenomenon is known as resonance. The resonance structures have the same placement of atoms but different locations of bond pairs and lone pairs of electrons. Moreover, various resonating structures can be converted to each other by moving lone pairs to bonding positions, and vice-versa.

The general rules that we follow to draw the resonance structures are as follows:

a. The [tex]\pi[/tex] electrons or a lone pair of electrons can change their positions while the position of atoms remains fixed.

b. The count of the valence electrons in all the resonating structure should be same.

c. The transfer of electrons is shown by the curved arrows.

d. The resonating structure must follow octet rule that is all atoms should have 8 electrons

Conditions to determine more contributing resonating structures are as follows:

1. Smaller formal charges are always preferred over the larger one.

2. The stable structure has more delocalization of charges on the atoms.

3. A more negative formal charge must always be located on the most electronegative atom.

The resonating structures of azide ion are shown in the image attached.

Structure III is more stable than the other two. This structure has negative charge on more electronegative atom (N) and more delocalization of charge. While in structure I and II, nitrogen is having a positive charge so unstable.

Learn more:

1. The moles of [tex]{\text{NaOH}}[/tex] : https://brainly.com/question/4283309

2. The correct name of the compound: https://brainly.com/question/9535482

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Resonance

Keywords: resonating structures, azide, N3-, structure I, structure II, structure III, Lewis structures, smaller, larger, electronegative atom.

A 325 ml sample of gas is initially at a pressure of 721 torr and a temperature of 32°c. if this gas is compressed to a volume of 286 ml and the pressure increases to 901 torr, what will be the new temperature of the gas (reported to three significant figures in °c)?

Answers

You can solve this question by using the ideal gas PV=nRT formula. Be careful though because the temperature used in the equation is kelvin, not celcius. The formula to determine the temperature would be: T= PV/nR

The calculation would be:
T1/T2= (P1V1/nR) / (P2V2/nR)
32+273.15/T2= (325*721) /(286*901)
305.15/T2= 0.90934
T2= 305.15/ 0.90934= 335.57 K= 62.4C

The new temperature of the given gas is [tex]\boxed{62.4\:^{\circ}\text{C}}[/tex].

Further Explanation:

An ideal gas is a hypothetical gas that is composed of a large number of randomly moving particles that are supposed to have perfectly elastic collisions among themselves. It is just a theoretical concept, and practically no such gas exists. But gases tend to behave almost ideally at a higher temperature and lower pressure.

The expression for the ideal gas equation is as follows:

[tex]\boxed{{\text{PV}} = {\text{nRT}}}[/tex]               …… (1)

Here, P is the pressure of gas.

V is the volume of the gas.

T is the absolute temperature of gas.

n denotes the number of moles of gas.

R is the universal gas constant.

Rearranging equation (1), we get:

[tex]\frac{{PV}}{T} = nR[/tex]

For a particular gas, the number of moles (n) and the universal as constant (R) both are constants.

If a specific gas with [tex]{P_1}[/tex] , [tex]{V_1}[/tex]  and [tex]{T_1}[/tex]  as initial parameters is treated to the final parameters being [tex]{P_2}[/tex] , [tex]{V_2}[/tex]  and [tex]{T_2}[/tex] . So equation (1) becomes

[tex]\frac{{{P_1}{V_1}}}{{{T_1}}} = \frac{{{P_2}{V_2}}}{{{T_2}}}[/tex]                …… (2)

Here,

[tex]{P_1}[/tex]  is the initial pressure of the gas.

[tex]{V_1}[/tex]  is the initial volume of the gas.

[tex]{T_1}[/tex]  is the initial temperature of the gas.

[tex]{P_2}[/tex]  is the final pressure of the gas.

[tex]{V_2}[/tex]  is the final volume of the gas.

[tex]{T_2}[/tex]  is the final temperature of the gas.

Calculation of the final temperature [tex]\left({{{\mathbf{T}}_{\mathbf{2}}}}\right)[/tex] of the gas:

Rearranging equation (2), we get:

[tex]{T_2} = \frac{{{P_2}{V_2}{T_1}}}{{{P_1}{V_1}}}[/tex]                …… (3)

Firstly, [tex]{T_1}[/tex] is to be converted into K. The conversion factor for this is,

[tex]{\text{0 }}^\circ{\text{C}} = {\text{273 K}}[/tex]

So [tex]{T_1}[/tex]  is calculated as follows:

[tex]\begin{aligned}{\text{Temperature}}\left( {\text{K}} \right)&= \left({32 + 273}\right)\;{\text{K}}\\&=305\;{\text{K}}\\\end{aligned}[/tex]

The value of [tex]{P_2}[/tex]  is 901 torr.

The value of [tex]{V_2}[/tex]  is 286 mL.

The value of [tex]{T_1}[/tex]  is 305 K.

The value of [tex]{P_1}[/tex]  is s721 torr.

The value of [tex]{V_1}[/tex]  is 325 mL.

Substitute these values in equation (3).

[tex]\begin{aligned}{T_2}&=\frac{{\left({{\text{901 torr}}}\right)\left({{\text{286 mL}}}\right)\left({{\text{305 K}}}\right)}}{{\left({{\text{721 torr}}}\right)\left({{\text{325 mL}}}\right)}}\\&={\text{335}}{\text{.40693 K}}\\\end{aligned}[/tex]

Conversion Factor:

[tex]{\text{0 K}} = -{\text{273}}^\circ{\text{C}}[/tex]  

So the value of [tex]{T_2}[/tex] [tex]\left({^\circ{\text{C}}}\right)[/tex]  is calculated as follows:

[tex]\begin{aligned}{T_2}&=\left( {{\text{335}}{\text{.40693}}-{\text{273}}}\right){\text{ }}^\circ {\text{C}}\\&={\text{62}}{\text{.40693 }}^\circ{\text{C}}\\&\approx{\mathbf{62}}{\mathbf{.4 ^\circ C}}\\\end{aligned}[/tex]

Learn more:

1. Law of conservation of matter states: https://brainly.com/question/2190120

2. Calculation of volume of gas: https://brainly.com/question/3636135

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Ideal gas equation

Keywords: ideal gas, pressure, volume, absolute temperature, equation of state, hypothetical, universal gas constant, moles of gas, initial, final, K, conversion factor, 325 mL, 286 mL, 721 torr, 901 torr, 62.4 degree Celsius.

If an insufficient amount of liquid unknown had been used, how would this have effected the value of the experimental molar mass

Answers

When the unknown liquid is heated and turned into vapor, it will not occupy the entire container. The volume in the molar mass (nRT)/PV will be greater than the actually volume of the unknown, and the calculated molar mass will be less than the actual molar mass.
Final answer:

Using an insufficient amount of a substance in an experiment can lead to incorrect calculation of its molar mass, as the measurement is dependent on the amount of the substance used. This is evident in experiments involving volatile liquids, where insufficient amounts could result in fewer gas molecules. This inaccuracy also affects percent composition and the calculation of molecular and empirical formulas.

Explanation:

If an insufficient amount of liquid unknown had been used in an experiment, it would have effected the experimental molar mass as molar mass is calculated based on the mass of the substance used. Reducing the amount of the substance used can lead to inaccurate measurements, potentially giving the compound a higher or lower molar mass than it actually has.

For example, if we were measuring a volatile liquid, the molar mass would be determined by heating the liquid in a flask with a tiny hole at the top, thereby converting the liquid into gas. In this case, the molar mass is calculated based on measurements of the mass, pressure, volume, and temperature of the sample. If the amount of liquid used was less than required, it could result in fewer gas molecules being formed, thereby affecting the molar mass calculated.

Furthermore, when looking at percent composition which is derived from the atomic or molar masses of the compound's elements, an insufficient amount of the liquid would also alter these figures, again leading to inconsistencies and inaccuracies in the calculation of the molecular and empirical formulas as well as the molar mass.

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What trend does the electronegativity have on the periodic table?

Answers

Electronegativity increases as you move up the periodic table.
Electronegativity increases as you move across the periodic table from left to right.

What substance takes part in an enzymatic reaction, but is unchanged by the reaction?

Answers

The answer to this question would be: enzyme 

Enzyme is a kind of catalyst that will take part in the chemical reaction but it won't be reacted. Enzyme only helps by reducing the energy needed to start the reaction.
Theoretically, the enzyme is not mandatory needed but if you have an enzyme the reaction will be easier, thus increasing reaction speed. But in most case, the reaction might be too slow without enzyme, making enzyme vital in living organism.

When 50.0 ml of a 0.3000 m agno3 solution is added to 50.0 ml of a solution of mgcl2, an agcl precipitate forms immediately. the precipitate is then filtered from the solution, dried, and weighed. if the recovered agcl is found to have a mass of 0.1183 g, what as the concentration of magnesium ions in the original mgcl2 solution?

Answers

Answer:

[tex]0.00826\ molar.[/tex]

Explanation:

The balanced reaction is:

[tex]2AgNO_3+MgCl_2-->2AgCl+Mg(NO_3)_2[/tex]

We know, number of moles = [tex]\dfrac{Given\ mass}{Molar\ mass}.[/tex]

Therefore, moles of AgCl formed=[tex]\dfrac{0.1183}{143}=0.000827\ moles.[/tex]        ( Molar mass of AgCl is 143 gm)

From the balanced equation 1 mol of [tex]MgCl_2[/tex] forms 2 mol of AgCl.

Therefore, 0.000827 mol of AgCl was formed by

[tex]\dfrac{0.000827}{2}=0.0004135\ mol[/tex]

Now concentration of [tex]MgCl_2=\dfrac{moles\ of\ MgCl_2}{Volume\ in\ Liters}=\dfrac{0.000413}{0.050}\ molar=0.00826\ molar.[/tex]

Hence, this is the required solution.

The concentration of magnesium ions in the original MgCl₂ solution is 8.25 x 10⁻³ M, determined by using stoichiometry and principles of gravimetric analysis.

We first calculated the moles of AgCl formed and connected it back to MgCl₂. The final concentration is found by dividing the moles by the total volume.

To determine the concentration of magnesium ions (Mg²⁺) in the original MgCl₂ solution, we use stoichiometry and principles of gravimetric analysis. First, we need to find the moles of AgCl precipitated:

Mass of AgCl = 0.1183 g
Molar Mass of AgCl = 143.32 g/mol
Moles of AgCl = 0.1183 g / 143.32 g/mol = 8.25 x 10⁻⁴ mol

Since the reaction between AgNO₃ and MgCl₂ is:

2 AgNO₃ + MgCl₂ → 2 AgCl + Mg(NO₃)₂

The moles of AgCl equals the moles of Cl⁻, which also equals the moles of MgCl₂.

Initial combined volume = 50.0 mL + 50.0 mL = 100.0 mL

So, the concentration of Mg²⁺ is:

[Mg²⁺] = (moles of MgCl₂) / (total volume in L)
= (8.25 x 10⁻⁴ mol) / (0.100 L)
= 8.25 x 10⁻³ M

Thus, the concentration of magnesium ions in the original MgCl₂ solution is 8.25 x 10⁻³ M.

Hydrogen is 99% hydrogen-1; 0.8% hydrogen-2; and 0.2% hydrogen-3. calculate it's average atomic mass

Answers

Average atomic mass is =1.11 u

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The benefit of fusion is that it:

requires no fuel
produces more energy
yields very little nuclear waste
is easier to control

Answers

i think the answer is most likely going to be C. yeilds very little nuclear waste

What is equal solute concentration inside and outside of the cell so water moves at equal rates?

Answers

Homeostasis occurs when the solute concentration is equal on either side of the cell barrier. This allows water to move in and out of the cell at equal rates. There is no net movement of water during homeostasis.

How to solve partial pressure given water vapor pressure?

Answers

The partial pressure of water in the mixture, Pwater, is the equilibrium vapour pressure of water at the temperature specified. At 298 K, from the data at the beginning of the questions section, Pwater = 3.17 kPa. Using the Ideal Gas Equation, the number of moles of N2 can be calculated.

Final answer:

To solve for the partial pressure of a gas in a mixture that includes water vapor, Dalton's law is used to account for the vapor pressure of water, and the ideal gas law assists in determining the density of water vapor.

Explanation:

To solve a problem involving partial pressure and water vapor pressure, one needs to follow a step-by-step approach. For example, if the water vapor pressure at a specific temperature is provided, such as 2.33 × 10³ Pa at 20.0°C, this value is used as the partial pressure of water vapor in the ideal gas law equation:

PV = nRT,

where P is the pressure, V is the volume, n is the number of moles, R is the universal gas constant, and T is the temperature in Kelvin. To find the density of water vapor in g/m³ which corresponds to the given vapor pressure, one must rearrange the ideal gas law to solve for n/V, which gives the number of moles per cubic meter. The molar mass of water from the periodic table is then used to convert moles to grams, thus obtaining the density. A comparison should be made with the saturation vapor density to verify the result.

An understanding of Dalton's law of partial pressures is integral as it states that the total pressure is the sum of the individual gas pressures. In the case of gas collected over water, the total pressure includes both the gas's pressure and the water vapor's pressure. The actual partial pressure of the gas of interest can be calculated as:

Pg = PTotal - PH₂O

This calculation is vital in contexts where gases are collected over water as in many laboratory settings.

Write a balanced equation for the reaction of ca with hcl

Answers

Ca(s)+2Hcl(aq) ------>CaCl2(s)+H2(g)

which of these is a chemical property of a substance?

A.texture
B.ductility
C.reactivity
D.conductivity

Answers

Probably c. reactivity Hope this helps. :)

The correct answer is C. Reactivity Please mark as brainliest.
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Give the symbol for the element that has an electron configuration of 1s22s22p63s23p4.

Answers

Answer: The symbol for the given element is S.

Explanation:-

Sulphur is an element with atomic number 16 and thus contain 16 electrons. It is a p block element as the last electron enters the p orbital. The nearest noble gas is Neon with 10 electrons.

The electrons are filled according to Afbau's rule in order of increasing energies and thus the electronic configuration is:  

[tex]S:16:1s^22s^22p^63s^23p^4[/tex]

The electronic configuration of sulphur in terms of noble gas is :

[tex]S:16:[Ne]3s^23p^4[/tex]

The element with the given electron configuration of 1s² 2s² 2p⁶ 3s² 3p⁴ is sulfur. The symbol for sulfur on the periodic table is S.

The numbers and letters in this notation have specific meanings. The numbers (1, 2, 3) represent the principal energy levels or shells, while the letters (s, p) represent the subshells or orbitals within those energy levels.

In the given element,

1s² means there are two electrons in the 1s orbital.

2s² indicates that there are two electrons in the 2s orbital.

2p⁶ signifies that there are six electrons in the 2p orbitals.

3s²  shows that there are two electrons in the 3s orbital.

3p⁴ indicates that there are four electrons in the 3p orbitals.

To learn more about the electron configuration, follow the link:

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The specific heat of silver is 0.06 cal/g°C. Fifty grams of silver will require _____ calories to raise the temperature 1°C.  A. 0.06 B. 3  C. 30  D. 833


Answers

The formula to figure this out is:
Gain or loss of heat in calories= the mass in grams x specific heat in cal/g°C x the change in temperature.
So when the numbers are plugged in, it looks like this: (50 g) (.06 cal/g°C) (1 cal).
Multiply the numbers, and your answer is 3 calories. I hope it helps you out!
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