48.5 moles of P4O10 contains how many moles of P

Answers

Answer 1
Final answer:

There are 194 moles of phosphorus in 48.5 moles of P4O10 because each molecule of P4O10 contains 4 phosphorus atoms.

Explanation:

To calculate the number of moles of phosphorus (P) in 48.5 moles of P4O10, we must understand the molar relationship between P4O10 and P. The molecule P4O10 has a composition of 4 phosphorus atoms to 10 oxygen atoms. This means that in every mole of P4O10, there are 4 moles of phosphorus atoms because the subscript '4' in P4 indicates that there are 4 phosphorus atoms in each molecule.

Using this stoichiometric ratio, the calculation is straightforward:


Number of moles of P = 4  imes Number of moles of P4O10


Number of moles of P = 4  imes 48.5 moles


Number of moles of P = 194 moles

Therefore, 48.5 moles of P4O10 contains 194 moles of phosphorus (P).


Related Questions

How many molecules of ethanol (c2h5oh) (the alcohol in alcoholic beverages) are present in 155 ml of ethanol? the density of ethanol is 0.789 g/cm3?

Answers

First convert volume to mass:

mass = 0.789 g/mL * 155 mL = 122.295 g

 

Then convert mass to number of moles:

number of moles = 122.295 g * (1 mole / 46 g) = 2.66 moles

 

Using avogadros number, we get the molecules:

number of molecules = 2.66 moles * 6.022 x 10^23 molecules / mole = 1.6 x 10^24 molecules

if you want to test whether a rock has calcite in it you could use the ?

Answers

You could use the "Vinegar Test." Students can use vinegar instead of hydrochloric acid for an introduction to the acid test which tests calcite.  

A sulfur atom and a sulfur molecule are not identical. what is the difference?

Answers

Atoms and molecules are often confused to be the same terms. But, molecules are the combination of atoms of multiple elements of the same kind and different kind. Atoms are the smallest units of all the element which shows the characteristics of element. This combination to form molecules. A sulfur molecule is composed of eight sulfur atoms.

When 56 J of heat are added to 11 g of a liquid, its temperature rises from 10.1 ∘C to 13.5 ∘C

Answers

To calculate how much the temperature of a substance will increase when a certain amount of heat is added, you can use the formula q = mcΔT, where q is the heat added, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature. For question 6, the final temperature of mercury after adding 195 cal of heat can be calculated using the specific heat capacity of mercury. For question 7, the mass of copper can be determined using the heat absorbed and the temperature change. For question 8, the mass of the NaCl crystal can be calculated using the same principles.

Heat transfer calculations require knowledge of the specific heat capacity of the substance in question, which varies for different materials. This capacity indicates how much heat is needed to raise the temperature of one gram of the substance by one degree Celsius. In the questions provided, using the formula and the known quantities, you can rearrange the formula to solve for the unknown variable such as the final temperature, mass, or heat added based on specific heat capacity values.

A 6.50x10^-5 m solution of potassium permanganate has a percent transmittance of 27.3% when measured in a 1.15 cm cell at a wavelength of 525 nm. calculate the absorbance of this solution

Answers

For this problem, we use the Beer Lambert's Law. Its usual equation is:

A = ∈LC
where
A is the absorbance
∈ is the molar absorptivity
L is the path length
C is the concentration of the sample solution

As you notice, we only have to find the absorbance. But since we are not given with the molar absorptivity, we will have to use the modified equation that relates % transmittance to absorbance:

A = 2 - log(%T)
A = 2 - log(27.3)
A = 0.5638

The simplest unit of matter that still retains the properties of an element is a(n) _____.

Answers

The simplest unit of matter that still retains the properties of an element is an "Atom".
Atom is the smallest particle of any unit that actually can exist retaining the properties of an element.  

How do scientists determine the number of neutrons in an atom?
Question 4 options:


They subtract the atomic number from the atomic mass.


They add the number of electrons and protons.


They find the number of protons.


They divide the atomic mass by two.

Answers

The answer to this question would be: They subtract the atomic number from the atomic mass.

An atom mass is made from its nucleus which was only proton and neutron since electron mass is too small. Atomic number is the number of protons, so if you subtract the atomic mass with atomic number you will definitely find the number of neutrons

if mass =180kg and volume =90m3, what is the density

Answers

To find the density you must divide the mass by the density.
180kg ÷ 90m³ = 2kg/m³
The density is 2kg/m³

Calculate the molarity of 0.850 mol of Na2S in 1.70 L of solution.

Answers

Molarity is simply the ratio of the number of moles of a substance over the total volume of the solution. Assuming that the addition of 0.850 moles does not change the overall volume of 1.70 L, therefore molarity is simply:

 

Molarity = 0.850 moles / 1.70 L = 0.5 moles / L = 0.5 M

Final answer:

The molarity of 0.850 mol of Na2S in 1.70 L of solution is calculated to be 0.50 M.

Explanation:

The subject of your question revolves around the calculation of molarity, which in chemistry represents the concentration of a solute in a solution. To calculate molarity, we need to divide the number of moles of the solute by the volume of the solution in liters. The formula is M = moles/volume. For your specific question, you want to calculate the molarity of 0.850 mol of Na2S in 1.70 L of solution. Using the formula, the calculation becomes: M = 0.850 mol / 1.70 L = 0.50 M.

For this specific scenario, where we have 0.850 moles of Na2S in a 1.70 L solution, the molarity (M) is determined by the formula M = moles/volume, resulting in a molarity of 0.50 M. This calculation allows us to precisely quantify the concentration of the solute in the given solution, a fundamental aspect of chemical analysis and reactions.

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Ethanol is a common laboratory solvent and has a density of 0.789 g/mL. What is the mass, in grams, of 113 mL of ethanol?

Answers

Answer: The mass of ethanol is 89.2 grams

Explanation:

Density is defined as the mass contained per unit volume.

[tex]Density=\frac{mass}{Volume}[/tex]

Given : Mass of ethanol =  ?

Volume of ethanol = 113 ml

Density of ethanol = 0.789 g/ml

Putting in the values we get:

[tex]0.789g/ml=\frac{mass}{113ml}[/tex]

[tex]mass=89.2g[/tex]

Thus mass of ethanol is 89.2 grams

Ethanol is a common laboratory solvent and has a density of 0.789 g/mL. The mass, in grams, of 113 mL of ethanol is 89.217 g.

Solvent is a part of solution in which solute is dissolved to form a solution.

To find the mass, we can use the formula:

mass = volume [tex]\times[/tex] density

where the volume is given as 113 mL and the density is given as 0.789 g/mL.

mass = 113 ml [tex]\times[/tex] 0.789 g/mL = 89.217 g

Therefore, the mass of 113 mL of ethanol is 89.217 g.

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How can the match remain unlit in the middle of the flame of a brusen burner

Answers

A match can remain unlit in the middle of the flame of a bunsen burner by not having the needed substance to ignite it. The match would not have a certain amount of oxygen reaching it at the middle of the flame since almost all of the oxygen is supplied in the production of flame of the bunsen burner. Oxygen is always needed for something to burn.

Answer:

By leaving the air valve almost close, so the flow of oxygen is as low as the combustion is not carried out properly, therefore, the flame will not rise beyond the middle of the ideally whole flame.

Explanation:

Hello,

On the attached picture, you will find a scheme showing the flame behavior of a bunsen burner in which it is seen that the middle of the flame matches with the hottest temperature due to the complete combustion of the fuel. It is possible for the match to remain unlit in the middle of the whole flame if the airflow is as low as the combustion is not carried out properly as shown below  the middle of the flame; it implies that the feed of oxygen is low so its valve remains almost closed.

Best regards.

Draw the electron configuration for a neutral atom of calcium

Answers

In order to write the Calcium electron configuration we first need to know the number of electrons for the Ca atom (there are 20 electrons). When we write the configuration we'll put all 20 electrons in orbitals around the nucleus of the Calcium atom.

In writing the electron configuration for Calcium the first two electrons will go in the 1s orbital. Since 1s can only hold two electrons the next 2 electrons for Calcium go in the 2s orbital. The next six electrons will go in the 2p orbital. The p orbital can hold up to six electrons. We'll put six in the 2p orbital and then put the next two electrons in the 3s. Since the 3s if now full we'll move to the 3p where we'll place the next six electrons. We now shift to the 4s orbital where we place the remaining two electrons. Therefore the Calcium electron configuration will be 1s22s22p63s23p64s2.

The atomic number of calcium is 20. Then the electronic configuration of calcium is 1 s₂,  2 s₂, 2 p₆, 3 s₂, 3 p₆ 4 s₂ .

What is electronic configuration ?

The distribution of electrons in an element's atomic orbitals is described by the element's electron configuration. Atomic electron configurations adhere to a standard nomenclature in which all atomic subshells that contain electrons are arranged in a sequence with the number of electrons they each hold expressed in superscript.

One orbital can house a maximum of two electrons, and there are four different types of orbitals (s, p, d, and f). More electrons can be held in the p, d, and f orbitals since they contain various sublevels.

Consequently, the electron configuration of calcium will be 1s22s22p63s23p64s2. The configuration notation gives scientists a simple way to express and record how electrons are organized around an atom's nucleus. As a result, it is simpler to comprehend and forecast how atoms will interact to produce solids.

Thus, the electronic configuration of calcium is 1 s₂,  2 s₂, 2 p₆, 3 s₂, 3 p₆ 4 s₂ .

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Question 15 there are three sets of sketches below, showing the same pure molecular compound (hydrogen chloride, molecular formula hcl ) at three different temperatures.

Answers

According to the temperature, the molecules of a substance behave differently. The boiling point of HCl is -85.05 °C and the melting point is -114.2 °C.
Therefore, if the temperature is kept above  -85.05 °C, the molecules will be spaced widely apart and will be in the gaseous state, exhibiting its properties.
If the temperature is between -114.2 °C and -85.05 °C, the molecules will be arranged in layers capable of slipping over one another because they will be in the liquid state.
Finally, if the temperature is below -114.2 °C, the molecules will be arranged in an orderly manner because they will be in the solid state.

H​2 ​​ and O2 ​​ react to produce H​2O. What is the mass of H2​​O produced when 0.73 g of H​2 ​​ completely reacts with 3.28 g of O2 ​​ ?

Answers

Hydrogen reacts with oxygen based on the following equation:
2 H2 + O2 → 2 H2O

From the periodic table:
molar mass of hydrogen = 1 gram
molar mass of oxygen = 16 grams

From the balanced equation above, we can find that:
4 grams of hydrogen react with 32 grams of oxygen to produce 36 grams of water.

This means that: 0.73 grams of hydrogen require (0.73x32) / 4 = 5.84 grams of oxygen to react with.
Since only 3.28 grams of oxygen are reacting, this means that oxygen is our limiting reagent and that the reaction would stop once the amount of oxygen is consumed.

So, we will base our calculations on oxygen.
mass of water produced from 3.28 grams of oxygen can be calculated as follows:
mass of water = (3.28 x 36) / 32 = 3.69 grams
Final answer:

0.73g of H2 reacts with 3.28g of O2 to produce approximately 3.69g of H2O according to the stoichiometry of the chemical reaction 2H2 + O2 → 2H2O.

Explanation:

The subject of this question is a chemical reaction involving molecular hydrogen (H2) and molecular oxygen (O2) to produce water (H2O). The equation for this reaction is 2H2 + O2 → 2H2O. It implies that 2 moles of hydrogen react with 1 mole of oxygen to form 2 moles of water.

Using molar mass, we can find that 0.73g of H2 is approximately 0.36 moles, and 3.28g of O2 is about 0.205 moles. However, according to the stoichiometry of the reaction, one mole of oxygen should react completely with 2 moles of hydrogen to form 2 moles of water. Thus, in this case, hydrogen is in excess and oxygen is the limiting reactant. Therefore, we can find the mass of water produced by multiplying the number of moles of oxygen (the limiting reactant) by the molar mass of water (18.01528g/mol), which is approximately 3.69 grams.

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Calculate how much 95% ethyl alcohol will be required to dissolve 0.1 g of sulfanilamide at 78 c using volume calculate how much sulfanilamide will remain dissolved after mixture is cooled to 0

Answers

Final answer:

This question involves calculating the volume of 95% ethyl alcohol needed to dissolve 0.1 g of sulfanilamide at 78°C and the remaining amount dissolved at 0°C, but these calculations depend on the solubility information of sulfanilamide in ethyl alcohol at these temperatures.

Explanation:

To calculate how much 95% ethyl alcohol is required to dissolve 0.1 g of sulfanilamide at 78°C, you would need to know the solubility of sulfanilamide in the alcohol at that temperature. Without this information, an accurate calculation cannot be made. However, once that solubility information is available, you could use the definition of percent yield (the mass of the solute divided by the solvent volume multiplied by 100) to calculate the amount of alcohol needed.

Similarly, to calculate how much sulfanilamide will remain dissolved when the mixture is cooled to 0°C, you would need the solubility of sulfanilamide in ethyl alcohol at 0°C. This is because solubility can change dramatically with temperature.

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Calculate the volume of 95% Ethyl Alcohol needed to dissolve 0.1 g sulfanilamide at 78°C (result: 0.476 mL), and then determine how much will remain dissolved when cooled to 0°C (result: 0.006664 g).

A. To calculate this:

Determine the solubility at the given temperature (0.210 g/mL).

Calculate the required volume of solvent:

Volume = mass / solubility = 0.1 g / 0.210 g/mL ≈ 0.476 mL

B. To calculate this:

Determine the solubility at 0°C (0.014 g/mL).

Calculate the amount of sulfanilamide that remains dissolved in 0.476 mL of solvent:

Remaining dissolved = volume x solubility = 0.476 mL x 0.014 g/mL ≈ 0.006664 g

Complete question:

A) Calculate how much 95% Ethyl Alcohol will be required to dissolve 0.1 g sulfanilamide at 78 C. (At 80 C, solubility = 210 mg/mL)

B) Using the volume of solvent calculated in Step 1, calculate how much sulfanilamide will remain dissolved in the mother liquid after the mixture is cooled to ) C. (At 0 C, solubility = 14 mg/mL)

7 seres vivos ejemplo

Answers

7 seres vivos ejemplo means live example series in English!


Hope this helpED!!!️️️

how many protons electrons and neutrons does the isotope nitrogen 15 have

Answers

Nitrogen-15 (^(15)N) has 7 protons, 7 electrons, and 8 neutrons. The atomic number (protons) is 7, and the mass number (protons + neutrons) is 15.

Nitrogen-15 (^(15)N) is an isotope of nitrogen, and it has a specific composition of protons, electrons, and neutrons.

1. Protons (atomic number): Nitrogen-15 has 7 protons. The atomic number of an element defines its identity and determines the number of protons in its nucleus. In the case of nitrogen, regardless of the isotope, it always has 7 protons.

2. Electrons: Since nitrogen-15 is an electrically neutral atom (it has no charge), it has an equal number of electrons as protons. Therefore, it also has 7 electrons. Electrons orbit the nucleus in energy levels or shells, and they play a crucial role in chemical bonding and reactivity.

3. Neutrons: Nitrogen-15 has 8 neutrons. Neutrons are electrically neutral subatomic particles found in the nucleus of an atom. They contribute to the atom's mass but not its charge. To determine the number of neutrons in an isotope, you subtract the atomic number (protons) from the mass number. In this case, 15 (mass number) - 7 (protons) = 8 neutrons.

Understanding the composition of isotopes, like nitrogen-15, is essential in chemistry and nuclear physics. It helps in differentiating between various forms of an element based on their nuclear properties. Nitrogen-15 is one of the stable isotopes of nitrogen, commonly used in scientific research, including nuclear magnetic resonance (NMR) spectroscopy and tracer studies in biology and chemistry.

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Nitrogen (n) atomic number = _____ atomic mass = _____ number of protons = _____ number of neutrons = _____ number of electrons = _____ number of electrons in the valence shell: _____

Answers

Nitrogen, Periodic abbreviation= N
Atomic Number: 7, as it has 7 protons
Atomic Mass: 14.007, so around 7 protons and 7 neutrons depending on isotope type
# Protons: 7
# Neutrons: 7
# Electrons: 7, usually, but not always, equal to # of Protons
Valence Electrons: 5, as with 7 electrons total, 2 would fill the first valence shell, leaving 5 in the valence, or outermost, shell.

John daltons atomic theory is considered to be the first truly scientific theory of the atom. What aspect of daltons research was missing from the early theories?
A) experimentation and examination of the results
B) Effective technology in the form of microscopes
C) appropriate mathematical formulas for testing
D) a community of scientist capable of reviewing his work

Answers

A. experimentation and examination of the results

Answer:

A) experimentation and examination of the results

Explanation:

From a historical and philosophical point of view, Dalton is considered the father of atomic theories. For over 20 centuries no one has manipulated the concept of atom. He had the audacity and the courage to manipulate these theories to try to explain what atoms would be by experimenting and analyzing the results.

For Dalton, matter was discontinuous, that is, between the atoms that compose it there would be empty spaces. Although considered theoretic behind the proposition of this model, Dalton considered relevant information from other studies (Proust's weighted laws; Lavoisier and the element conception; gases and their laws etc.), which allowed his model to explain the phenomena even then discussed. This is the "asset" of his atomic model, for though it presents clear constraints on today's science, for his contemporaries, this model satisfied many behaviors that continuous matter was unable to even predict.

Dalton's ideas were considered appropriate because of his effort to link theoretical postulates with scientifically obtained data through experimentation. This fact corroborated the acceptance of his model by the scientists of the time, making Dalton enter the history of chemistry and humanity.

"what is the probability of finding an electron within one bohr radius of the nucleus"

Answers

your answer is going to be b

Hardness is related to:
specific gravity
surface roughness
size of the sample
strength of chemical bonds

Answers

Strength of chemical bonds is the answer

Answer: Option (d) is the correct answer.

Explanation:

When atoms of a substance are strongly held together due to strong intermolecular forces of attraction then the substance acquires a fixed shape and volume.

Hence, the substance becomes hard in nature.

For example, solids are hard in nature due to the strength of chemical bonds between its atoms which are held by strong intermolecular forces of attraction.

Whereas in liquids, molecules are held by less strong intermolecular forces of attraction. As a result, they do not have fixed shape and volume.

Thus, we can conclude that hardness is related to strength of chemical bonds.

How many water molecules are in a block of ice containing 1.75 mol of water (H2O)?

Answers

1.75 mol H2O x (6.022x10^23 molecules H2O / 1 mol H2O) = 1.05x10^24 molecules H2O if you need a further example let me know 

Answer: The number of molecules present in the given moles of water are [tex]1.054\times 10^{24}[/tex]

Explanation:

We are given:

Moles of water = 1.75 moles

According to mole concept:

1 mole of a compound contains [tex]6.022\times 10^{23}[/tex] number of molecules.

So, 1.75 moles of water will contain = [tex]1.75\times 6.022\times 10^{23}=1.054\times 10^{24}[/tex] number of molecules.

Hence, the number of molecules present in the given moles of water are [tex]1.054\times 10^{24}[/tex]

How many h2o molecules are in a 9.00-g sample of water?

Answers

The number of molecules in one mole of a covalent substance is 6.02x10^23,, known as Avogadro's number.In order to determine the number of molecules of water are in 9g of water, the mass of the water must be converted to moles. This is done by dividing the mass of the water by the molar mass of water, which is 18.015g/mol 9/18.015= about 1/2moles 6.02x10^23 x 1/2 = 3.01x10^23 9g water contains 3.01x10^23 molecules of h2o

How many grams of Cl are in 525g of CaCl2

Answers

First we determine the moles CaCl2 present:

525g / (110.9g/mole) = 4.73 moles CaCl2 present 

Based on stoichiometry, there are 2 moles of Cl for every mole of CaCl2:
(2moles Cl / 1mole CaCl2) x 4.73 moles CaCl2 = 9.47 moles Cl 

Get the mass:
9.47moles Cl x 35.45g/mole = 335.64 g Cl

examine Na+ with the anions F-, Br-, OH-, NO3-, and ClO4-. How many anions are there in each of these formulas?

Answers

Final answer:

The formulas for the anions NaF, NaBr, NaOH, NaNO3, and NaClO4 have only one anion present in each formula.

Explanation:

The given question asks to examine Na+ with different anions and determine the number of anions present in each formula.

Na+ is a cation with a +1 charge. The anions mentioned in the question are F-, Br-, OH-, NO3-, and ClO4-. The formulas for these anions are NaF, NaBr, NaOH, NaNO3, and NaClO4, respectively.

In each of these formulas, there is only one anion present, which is indicated by the negative charge in the formula. Therefore, the number of anions in each formula is 1.

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determain the molecular mass of T2 ^17O2. Explain answer to me because I have a lot of questions like this

Answers

The question deals with isotopes and how their masses differ from their normal elemental counterparts.

Here, T represents tritium, which is an isotope of hydrogen with a mass of 3 amu. Similarly, the isotope of oxygen present is ¹⁷O, which means it has a mass of 17 amu.

To determine the mass of this molecule, we do the following calculation:

3 * 2 + 17 * 2
6 + 34 
40

The mass of T₂¹⁷O₂ is 40 amu

Which of the solutions below have the same molar concentration as solution x? check all that apply?

Answers

The molar concentration of any solution is the number of moles of solute present per liter of solution. Therefore, for any solution to have the same molarity as another, it must have the same number of moles per liter. The mathematical expression of this is:

Molar concentration (M) = moles (n) / Liter (L)

What is the automatic number of a sodium atom that has 11 protons and 12 neutrons

Answers

The atomic number is precisely the number of protons,positive charged,massive,nuclear particles Z=11. The term we would use for the element for sodium Na.If the sodium atom Z=11 then protons are have the same number of atoms.there must be equal and neutral.If it is a nuclide there must be neutrons in the nucleus.

how many grams of mercury are present in a barometer that holds 6.5 ml of mercury

Answers

There are 1000 ml in one gram.
So:

6.5/1000
0.0065

Hope this helped!

How many moles of o2- ions are there in 0.350 moles of aluminum oxide, al2o3?

Answers

The formula for aluminum oxide is Al2O3, which means that, if aluminium oxide is ionically bonded, every formula mass of aluminum oxide contains three O2- ions. In this instance, .0350 formula masses of aluminum oxide would contains, 0.350 mole Al2O3 (3 mole O2-/1mole) = 3*0.350 = 1.05 Hence 1.05 moles of O2-. If aluminum oxide were covalently bonded, it would not contain any O2- ions.

There are 1.05 moles of O²⁻ in 0.350 moles of Al₂O₃.

FURTHER EXPLANATION The chemical formula of a compound consists of the chemical symbol of the elements that make up the compound and a small number written to the right of the symbol or the subscript. The subscript indicates how many atoms or ions of that element is found in one unit (formula unit or molecule) of the compound. It also indicates how many moles of the atom or ion are present in one mole of the compound.  Example, the chemical formula of calcium chloride is CaCl₂. This can be interpreted in two ways:

              1) There is one Ca²⁺ and and two Cl⁻ in one   formula

                  unit of calcium chloride.

             2)There is one mole of Ca²⁺ and and two moles of Cl⁻ in

                one mole of calcium chloride.

It is important to remember that the mole concept considers particles in bundles (or sacks) with one mole being one bundle (or sack) which consists of 6.022 ×10²³ particles. This number is called Avogadro's number.  The particles may be atoms, ions, molecules, or formula units.

The compound in the problem is Al₂O₃. Similar to the example, this chemical formula can be interpreted in two ways:

There are 2 aluminum ions (Al³⁺) and 3 oxide ions (O²⁻) in one formula unit of Al₂O₃.There are 2 moles of aluminum ions (Al³⁺) and 3 moles of oxide ions (O²⁻) in one mole of Al₂O₃.

To determine how many moles of O²⁻ are in 0.350 moles of Al₂O₃, the equation below may be used:

[tex]moles \ of \ O^{2-} = 0.350 \ mol \ Al_2O_3 \times \frac{3 \ mol \ O^{2-}}{1 \ mol \ Al_2O_3}\\\\\boxed {\boxed {moles \ of \ O^{2-} = 1.05 \ mol \ O^{2-}}}[/tex]

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Keywords: moles, mole ratio

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