Which type of fire should never be put out with water?
paper fire
clothing fire
wood fire
grease fire

Answers

Answer 1

Answer:

grease fire. The others are solids that will easily be put out with water.

Answer 2

Answer:

grease fire

Explanation:

DOING THAT WILL JUST MAKE IT WORSE

hope it helps


Related Questions

What formula is used to calculate the concentration of base in titration?

Answers

Answer:

The unknown base concentration can be calculated from

Cb = (Cₐ * Vₐ) / Vb

Explanation:

An acid–base titration is a quantitative method of analysis for the determination of the concentration of an acid or base by neutralizing it with a standard solution (solution of known concentration) of base or acid.

At the equivalence point, when all unknown  base neutralized by standard acid solution

the following is applied  

No. of equivalent of acid = No. of equivalent of base

Cₐ * Vₐ = Cb * Vb

where,

Cₐ: is the concentration of standard acid solution  (known).

Vₐ: is the volume of acid that neutralizes the base (known).

Cb: is the unknown base concentration (unknown).

Vb: is the volume of base that neutralized with the acid (known).

So, the unknown base concentration can be calculated from

Cb = (Cₐ * Vₐ) / Vb
Final answer:

The concentration of base in a titration is calculated using the formula: concentration of base (M) = moles of acid / volume of base (L). This calculation is based on the stoichiometry of the neutralization reaction, typically in a one-to-one mole ratio, and is performed after achieving neutrality as indicated by an indicator or pH meter.

Explanation:

To calculate the concentration of base in a titration, a known volume and concentration of an acid are titrated against the base with an unknown concentration. The formula used for this calculation is concentration of base (M) = moles of acid / volume of base (L). This equation comes from the stoichiometry of the neutralization reaction, which for monoprotic acids and bases is typically a one-to-one mole ratio.

Using the stoichiometry of the neutralization reaction, which in a simple acid-base reaction like HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l), is 1:1, you can determine the moles of base that react with the moles of acid. The moles of acid are calculated by multiplying the concentration of the acid by the volume of acid (in liters). Once neutrality is achieved, indicated by a color change of the indicator or a specific reading on a pH meter, the volume of base used is noted. The moles of acid originally present in the solution are equal to the moles of base since they react in a 1:1 ratio. This allows the calculation of the base concentration using the titrant volume and the known concentration of the acid.

What best describes the heat transfer when kinetic energy is converted into potential energy?

A)exothermic
B)endothermic
C)both
D)neither

Answers

The conversion of kinetic energy to potential energy is neither exothermic nor endothermic, as it involves the transformation of energy forms within a system, not heat transfer to or from the environment. Option D is correct.

The conversion of kinetic energy to potential energy does not involve heat transfer but rather the transformation of one form of mechanical energy to another within a system. An exothermic process is one in which energy is released to the surroundings, usually in the form of heat, such as when a solid burns brightly, while an endothermic process absorbs energy from the surroundings.

For example, when two chemicals are mixed and their temperature drops, it is considered endothermic because the chemical system absorbed heat from the surroundings.

Hence, D. is the correct option.

help!!! i need these 3

Answers

Answer:

3. a.) BECAUSE the positive protons and negative electrons must balance each other’s charges out

4. a.) BECAUSE the number of protons must stay the same even if the number of neutrons changes (atoms are partially defined by their number of protons)

5. b.) BECAUSE there are 3 atoms (2 hydrogen and 1 oxygen) and 10 electrons shared between them

The transfer of energy by heat flow through a substance is accomplished by

Answers

The transfer of energy by heat flow through a substance is accomplished by convection.

Answer:

The real answer is conduction.

Trust me on this one, it's correct. If you put the other answer, you will get it wrong. The answer is conduction, and I am 100% positive! :)

Fill in the coefficients that will balance the following reaction:

a0C3H8 + a1O2 → a2CO2 + a3H2O

Answers

Answer:

C₃H₈₍g₎ + 5O₂₍g₎→  3CO₂₍g₎ + 4H₂O₍l₎

Explanation:

Propane is an alkane that burns in enough oxygen to produce carbon (iv) Oxide and heat as the only by products. Balancing the equation: The number of atoms of each kind on either side should be equal. Hydrogen on the left has eight atoms same as the right side after balancing, oxygen has 10 while carbon has 3 on each side.

Answer:The value of the coefficients are:

[tex]a_o=1,a_1=5,a_2=3,a_3=4[/tex]

Explanation:

Number written in front of the molecule or element in balanced chemical reaction is known as stoichiometric coefficient.

[tex]a_oC_3H_8 +a_1O_2 \rightarrow a_2CO2 +a_3H2O[/tex]

The balance chemical reaction will be given by:

[tex]1C_3H_8 + 5O_2 \rightarrow 3CO2 + 4H2O[/tex]

[tex]a_o=1,a_1=5,a_2=3,a_3=4[/tex]

1 mole of octane reacts with 5 moles of oxygen gas to gives 3 moles of carbon dioxide and 4 moles of water as a product.

What happens to pressure as temperature increases and temperature decreases

Answers

When temperature increases pressure also increases.

When temperature decreases pressure decreases.

That is why you have low tire pressure when it’s cold out

Temperature and Pressure have a direct relationship!

When Temperature increases ↑

Pressure increases ↑

When Temperature decreases ↓

Pressure decreases ↓

I have a cylinder sitting in my lab that contains 0.7500 L of gas, and it's pressure is 16.24 psi. If I relieve the cylinder and change the pressure to 6.961 psi, what will be the new volume of the gas in L?

Answers

Answer:

1.633L

Explanation:

P1 = 16.24psi

V1 = 0.700L

P2 = 6.961psi

V2 = ?

Using Boyle's law, P1V1 = P2V2

V2 = P1V1/P2

V2 = 16.24*0.7/6.961

V2 = 1.633L

Describe how is thermometer uses the thermal expansion of a material to measure temperature?

Answers

Answer:

The red liquid in a thermometer tells you what temperature the thermometer has. So when you dip that thermometer in a warm substance, the red liquid (generally mercury) rises because the warmth makes the liquid expand or jump. The vice versa occurs with a cold substance. That's why you see the liquid going down when you put the thermometer on an ice cube.

Explanation:

Final answer:

A thermometer measures temperature by relying on the thermal expansion and contraction of a substance such as mercury or alcohol within a reservoir. The liquid's volume changes are visible along a graduated scale, providing a temperature reading. Material properties like specific heat and thermal conductivity are critical in thermometer design for performance and accuracy.

Explanation:

A thermometer operates on the principle of thermal expansion, which is the tendency of a substance to change in volume in response to a change in temperature. When a substance is heated, its particles move more vigorously, causing it to expand. Conversely, when the substance is cooled, the particles lose energy and move less, leading to contraction. This behavior is harnessed in a thermometer.

In the case of a mercury or alcohol thermometer, the liquid inside the reservoir expands as it is heated and contracts when it cools. This causes the visible level of the liquid to rise or fall along a calibrated scale, corresponding to the temperature. It's important that the material used for this liquid has uniform thermal expansion properties over the temperature range of interest. This ensures that the thermometer provides a reliable measurement of temperature changes.

When designing a thermometer, aspects such as specific heat and thermal conductivity must be considered. A material with high specific heat requires more energy to change its temperature, which can slow down the response time of the thermometer. On the other hand, thermal conductivity impacts how quickly the material reaches thermal equilibrium with its surroundings, which affects the speed of the reading as well.

Which of these is a compound

Answers

Answer:

CO2 is a compound of carbon and oxygen.

Answer:

CO2

Explanation:

A compound is a  substance  that consists molecules that are formed by atoms from different elements that are bond together. According to this, from the options given, the compound is CO2.

The other options are not right because they only have one element.

Soluble substances can dissolve in certain solvents true or false

Answers

Answer:

True

Explanation:

Soluble substances dissolve.

Therefore they wouldn't be called soluble if they can't dissolve in solvents

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Soluble substances can dissolve in certain solvents this statement is true.

Solubility can be defined as the property of a given substance or solute to mix with a solvent. The solute can be a solid, liquid or gas which can be dissolved into a liquid solvent. Certain substances or solutes are solvable in all solvents in a particular proportion to form a solution. This property is called miscibility. The solubility can be seen in the case of polar solute and solvent. For example, ethanol is soluble in water.

Hence, the given statement is true.

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Name the following compound:
CH2 = CH2 - CH2 - CH3
O Butane
O butyl
O 1-butene
1-butyne

Answers

Answer:

The answer is 1-butene

Explanation:

In a hydrogen fusion reaction two lighter hydrogen nuclei merge to form a heavier more stable helium nucleus. The energy that is released in a hydrogen fusion reaction is

Answers

Answer:

is very large and it provides the needed temperature for another set of fusion

Explanation:

Nuclear fusion is the combination of two atomic nuclei into larger ones.

One of such is used in making hydrogen bonds.

In nuclei fusion,

²₁ H + ²₁ H → ⁴₂He + energy

This is an example of nuclear fusion.

The energy helps to further the fusion process and a chain reaction occurs and a massive amount of energy is released.

During which stage of sedimentary rock formation do minerals crystallize at points of contact with other clasts?

A. Deposition
B. Cementation
C. Transportation
D. Burial

Answers

Answer:

B. Cementation

Explanation:

The processes by which sediments are changed into rock are complex, but can be simplified into two processes, called compaction and cementation. Rounded sediment grains (ooliths) bound together with crystalline calcite.

Answer:

The correct answer is option B, that is, cementation.

Explanation:

The procedures by which the sediments are modified into rocks are composite, however, can be simplified into two procedures, known as cementation and compaction. In geology, cementation refers to welding and hardening of clastic sediments, that is, those produced from the preexisting fragments of rocks due to the precipitation of the mineral matter in the pore gaps. It is the ultimate phase in the production of sedimentary rock.

In the sun, hydrogen is converted to ____________________ through nuclear fusion.

helium
carbon
water

Answers

Answer:

Helium

In the sun, hydrogen is converted to __Helium__ through nuclear fusion.

Answer:

helium

Explanation:

I need help ASAP!!!!!!!!!

Answers

B. The hole in the ozone layer got smaller

C. The hole in the ozone layer over Antarctica got bigger.

If you look at the Dobson unit scale the lighter the color over Antarctic the greater the ozone hole gets.

Which statement describes the general trends in electronegativity and metallic properties as the elements in Period 2 are considered in order of increasing atomic number?

Answers

Answer:

Electronegativity increases and metallic

properties decrease.

Explanation:

The statement which describes the general trends in electronegativity and metallic properties as the elements in Period 2 are considered in order of increasing atomic number are;

Electronegativity increases with increasing atomic number.

Metallic properties decreases with increasing atomic number.

For electronegativity:

Flourine is the most electronegative of Period 2 elements.

For metallic properties:

Lithium is the most metallic of the elements in Period 2.

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1. How many moles of sodium will react with water to produce 4.0 mol of
hydrogen in the following reaction?
2Na(s) + 2H2O(1) ► 2NaOH(aq) + H2(g) ans: 8.0 mol Na

Answers

Answer:

Explanation:

The equation tells you that for every mol of H2 you need 2 mols of Na to get it.

1 H2   /  4 mols H2  = 2  mols Na  /   x    Cross multiply

1*x = 4 * 2

x = 8 mol Na

Answer:

8 moles of sodium will react with water to produce 4.0 mol of  hydrogen in the reaction.

Explanation:

The rule of three or is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them. That is, what is intended with it is to find the fourth term of a proportion knowing the other three. Remember that proportionality is a constant relationship or ratio between different magnitudes.

If the relationship between the magnitudes is direct, that is, when one magnitude increases, so does the other (or when one magnitude decreases, so does the other), the direct rule of three must be applied. To solve a direct rule of three, the following formula must be followed:

a ⇒ b

c ⇒ x

Then

[tex]x=\frac{c*b}{a}[/tex]

In this case you can see that by stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), they react and obtain:

2 moles of sodium (Na)2 moles of water (H₂O)2 moles  sodium hydrogen (NaOH)1 mole of hydroxide H₂

But in this case 4 moles of hydrogen are produced. Then the rule of three applies as follows: If by stoichiometry 2 moles of sodium produce 1 mole of hydrogen, how many moles of sodium are needed to produce 4 moles of hydrogen?

[tex]moles of sodium=\frac{4molesofhydrogen*2molesofsodium}{1mole of hydrogen}[/tex]

moles of sodium=8

Then, 8 moles of sodium will react with water to produce 4.0 mol of  hydrogen in the reaction.

2.5 moles of sodium chloride is dissolved
to make 0.050 liters of solution.

Answers

whats the question?????

Nitrogen is ____ at room temperature. Please fill in the blank and then answer the question. Thank u :)

Answers

Answer:

Gas

Explanation:

Nitrogen is an element. It's a gas at room temperature. Nitrogen makes up about 78% of the Earth's atmosphere. Liquid nitrogen is very cold, so it is often used to freeze food.

What chemical phenomenon accounts for the elasticity seen in solids?

Answers

Answer:

covalent bond  

ionic bond

hydrogen bond

hope this helps enjoy

Explanation:

Final answer:

The elasticity seen in solids is due to the forces between atoms acting like springs that can be stretched or compressed but not easily broken. This allows solids to return to their original shape after the external forces causing deformation are removed.

Explanation:

Elasticity in solids is a result of the atoms in the material being in close contact and vibrating but not changing positions with neighboring atoms. The forces between the atoms act like springs that can be stretched or compressed but not easily broken. This resistance to deformation and ability to return to their original shape is what causes the elasticity seen in solids. For example, when a solid is stretched, the atomic springs are stretched, but when the force is removed, the springs bring the material back to its original shape.

Which statement is part of the kinetic molecular theory?

Answers

Answer:

Explanation:

Kinetic Molecular Theory states that gas particles are in constant motion and exhibit perfectly elastic collisions.The average kinetic energy of a collection of gas particles is directly proportional to absolute temperature only.

Answer: Kinetic Molecular Theory states that gas particles are in constant motion and exhibit perfectly elastic collisions.

Explanation: Kinetic Molecular Theory can be used to explain both Charles' and Boyle's Laws. The average kinetic energy of a collection of gas particles is directly proportional to absolute temperature only.

A yield of NH3 of approximately 98% can be obtained at 200°C and 1,000 atmospheres of pressure.

How many grams of N2 must react to form 1.7 grams of ammonia, NH3?

Answers

Answer:

1.429 g of  N₂

Explanation:

The Haber process is a reaction that combines nitrogen with hydrogen to form ammonia according to the following balanced equation:

N₂ ₍g₎ + 3 H₂ ₍g₎ ⇆  2NH₃ ₍g₎  

One can note that 1 mol of N₂ react with H₂ to produce 2 mol of NH₃.

We cannot compare weight of a substance (in grams) to another in chemical reactions, but we can use moles, then we have to convert the weight of NH3 to moles.

no. of moles of NH₃ = (mass / molar mass) = (1.7 g / 17 g/mol) = 0.1 mol

and the actual yield is 98% , then the theoretical number of moles that would be produced are:  

percent yield = (actual yield / theoretical yield) × 100

98 = (0.1 mol /  theoretical yield) × 100

theoretical no. of moles of NH₃ = (0.1 * 100) /98 = 0.102 mol

using cross multiplication

1 mol of N₂ → 2 mol of NH₃.

?? mol of N₂ → 0.102 mol of NH₃.

no of moles of N₂ = [(1 mol * 0.102 mol) / 2 mol] = 0.051 mol

Last step is to convert the moles back to grams using:

mass = (no of moles of N₂  * molar mass of N₂)

         = (0.051 mol * 28 g/mol) = 1.429 g

Two opposing reaction (a + b c+D) occurring simultaneously

Answers

Answer:

redox reaction

Explanation:

it's the only reaction occurs simultaneously, reduction and oxidation occur at the same time

Help ASAP ! Due tomorrow.

Answers

Answer:

1. 0.6678 atm.

2. 181.9 mm Hg.

3. 379.8 K = 106.8°C.

4. 691.8 mm Hg.

Explanation:

We can use the general law of ideal gas: PV = nRT.  

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant,

T is the temperature of the gas in K.

If n and V are constant, and have different values of P and T "Lussac law":  

(P₁T₂) = (P₂T₁)

Q1:

∵ (P₁T₂) = (P₂T₁)

P₁ = 0.5 atm, T₁ = 25°C + 273 = 298 K.  

P₂ = ??? atm, T₂ = 125°C + 273 = 398 K.

∴ P₂ = (P₁T₂)/(T₁) = (0.5 atm)(398 K)/(298 K) = 0.6678 atm.

Q2:

∵ (P₁T₂) = (P₂T₁)

P₁ = 47.0 mm Hg, T₁ = 77.0 K.  

P₂ = ??? mm Hg, T₂ = 25°C + 273 = 298 K.

∴ P₂ = (P₁T₂)/(T₁) = (47.0 mm Hg)(298 K)/(77 K) = 181.9 mm Hg.

Q3:

∵ (P₁T₂) = (P₂T₁)

P₁ = 248.0 kPa, T₁ = 0°C + 273 = 273 K. .  

P₂ = 345.0 kPa, T₂ = ??? K.

∴ T₂ = (P₂T₁)/(P₁) = (345.0 kPa)(273 K)/(248.0 kPa) = 379.8 K = 106.8°C.

Q4:

∵ (P₁T₂) = (P₂T₁)

P₁ = 745.0 mm Hg, T₁ = 22°C + 273 = 294 K. .  

P₂ = ??? mm Hg, T₂ = 0°C + 273 = 273 K.

∴ P₂ = (P₁T₂)/(T₁) = (745.0 mm Hg)(273 K)/(294 K) = 691.8 mm Hg.

How many grams would 3.36 × 1023 molecules of copper (II) sulfate (CuSO4) weigh?

Answers

Answer:

The mass of copper(II)sulfate are, 89.6 grams

Explanation:

Molecules of  =

Molar mass of  = 160 g/mole

First we have to calculate the moles of .

As,  number of atoms present in 1 mole of

So,  number of atoms present in  mole of

Now we have to calculate the mass of

Therefore, the mass of copper(II)sulfate are, 89.6 grams

The temperature of 6.24 L of a gas is increased from 25.0°C to 55.0°C at constant pressure. The new volume of the gas is Question 18 options: 2.84 L. 6.87 L. 13.7 L. 5.67 L.

Answers

Answer:

Heating this gas to 55 °C will raise its volume to 6.87 liters.

Assumption: this gas is ideal.

Explanation:

By Charles's Law, under constant pressure the volume [tex]V[/tex] of an ideal gas is proportional to its absolute temperature [tex]T[/tex] (the one in degrees Kelvins.)

Alternatively, consider the ideal gas law:

[tex]\displaystyle V = \frac{n \cdot R}{P}\cdot T[/tex].

[tex]n[/tex] is the number of moles of particles in this gas. [tex]n[/tex] should be constant as long as the container does not leak.[tex]R[/tex] is the ideal gas constant. [tex]P[/tex] is the pressure on the gas. The question states that the pressure on this gas is constant.

Therefore the volume of the gas is proportional to its absolute temperature.

Either way,

[tex]V\propto T[/tex].

[tex]\displaystyle V_2 = V_1\cdot \frac{T_2}{T_1}[/tex].

For the gas in this question:

Initial volume: [tex]V_1 = \rm 6.24\; L[/tex].

Convert the two temperatures to degrees Kelvins:

Initial temperature: [tex]T_1 = \rm 25.0\;\textdegree{C} = (25.0 + {\rm 273.15})\; K = 298.15\;K[/tex].Final temperature: [tex]T_1 = \rm 55.0\;\textdegree{C} = (55.0 + {\rm 273.15})\; K = 328.15\;K[/tex].

Apply Charles's Law:

[tex]\displaystyle V_2 = V_1\cdot \frac{T_2}{T_1} = \rm 6.24\;L \times \frac{328.15\; K}{298.15\;K} = 6.87\;L[/tex].

The correct option is b. 6.87 L.

To solve this problem, we can use Charles's Law, which states that the volume of a gas is directly proportional to its temperature in Kelvin at constant pressure. Mathematically, this can be expressed as:

 [tex]\[ \frac{V_1}{T_1} = \frac{V_2}{T_2} \][/tex]

 where [tex]\( V_1 \) and \( T_1 \)[/tex] are the initial volume and temperature of the gas, respectively, and [tex]\( V_2 \) and \( T_2 \)[/tex] are the final volume and temperature of the gas, respectively.

First, we need to convert the temperatures from Celsius to Kelvin:

[tex]\[ T_1 = 25.0^\circ C + 273.15 = 298.15 \text{ K} \][/tex]

[tex]\[ T_2 = 55.0^\circ C + 273.15 = 328.15 \text{ K} \][/tex]

Now we can rearrange Charles's Law to solve for the final volume [tex]\( V_2 \):[/tex]

[tex]\[ V_2 = V_1 \times \frac{T_2}{T_1} \][/tex]

 Substituting the given values:

[tex]\[ V_2 = 6.24 \text{ L} \times \frac{328.15 \text{ K}}{298.15 \text{ K}} \][/tex]

[tex]\[ V_2 = 6.24 \text{ L} \times \frac{328.15}{298.15} \][/tex]

[tex]\[ V_2 = 6.24 \text{ L} \times 1.1007 \][/tex]

[tex]\[ V_2 \approx 6.87 \text{ L} \][/tex]

 Therefore, the new volume of the gas after the temperature increase is approximately 6.87 L.

when lead nitrate reacts whith sodium iodide, sodium nitrate and lead iodide are formed if i start with 25.0 grams of lead nitrate and 15.0 grams of sodium iodide, find the percent yield if this reaction forms 6.0 g of sodium nitrate during the experiment
Pb(NO3)2+ 2NaL--> PbL2+ 2NaNO3

















Answers

So you find the moles of the lead nitrate by doing mass/Mr so 25/331.2 which gives you 0.075

Due to stoichiometry in the reaction we see 1:2 ratio so we do 0.075x2 gives 0.15 moles of NaNO3

Then mass: moles x Mr so 0.15 x 85= 12.75g is your theoretical

So % yield is actual/ theoretical x 100

Therefore 6.0g/12.75 g x 100 = 47%

Not sure if it’s correct hope it helps!

Consider the following reaction:
iron (s) + chlorine (g) à iron (III) chloride
a. Write the balanced chemical equation.
b. 25.0 g of iron reacts with excess chlorine gas.
a. Calculate the moles of iron reactant.
b. Calculate the moles of iron (III) chloride.
c. Calculate the mass of iron (III) chloride.

Answers

Answer:

1) a. 2Fe(s) + 3Cl₂(g) → 2FeCl₃(s).

2) a. 0.4477 mol.

b. 0.4477 mol.

c. 72.61 g.

Explanation:

1) Consider the following reaction:  iron (s) + chlorine (g) à iron (III) chloride

a. Write the balanced chemical equation.

The balanced equation should apply the law of conversation of mass that the no. of different atoms is equal in both sides of the reaction (reactants and products sides).

So, the balanced chemical equation is:

2Fe(s) + 3Cl₂(g) → 2FeCl₃(s).

It is clear that 2 mol of Fe(s) react with 3 mol of Cl₂(g) to produce 2 mol of FeCl₃(s).

2) 25.0 g of iron reacts with excess chlorine gas.  

a. Calculate the moles of iron reactant.

The no. of moles of Fe (n) can be calculated using the relation:

n = mass/molar mass = (25.0 g)/(55.845 g/mol) = 0.4477 mol.

b. Calculate the moles of iron (III) chloride.

Using cross multiplication:

2 mol of Fe produce → 2 mol of FeCl₃, from stichiometry.

∴ 0.4477 mol of Fe produce → 0.4477 mol of FeCl₃.

∴ The no. of moles of iron (III) chloride produced is 0.4477 mol.

c. Calculate the mass of iron (III) chloride.

We can calculate the mass of iron (III) chloride produced using the relation:

mass of  iron (III) chloride = (no. of moles)*(molar mass) = (0.4477 mol)*(162.2 g/mol) = 72.61 g.

Final answer:

The balanced chemical equation for the reaction between iron and chlorine is 2 Fe(s) + 3 Cl2(g) → 2 FeCl3(s). A total of 0.448 moles of iron reacts with excess chlorine to produce 0.448 moles of iron (III) chloride, with a mass of 72.67 g.

Explanation:

The balanced chemical equation for the reaction between iron (s) and chlorine (g) to form iron (III) chloride (FeCl3) is: 2 Fe(s) + 3 Cl2(g) → 2 FeCl3(s).

To calculate the moles of iron reactant, use the molar mass of iron, which is 55.85 g/mol. Moles of iron = mass of iron ÷ molar mass of iron = 25.0 g ÷ 55.85 g/mol = 0.448 moles of iron.

The stoichiometry of the reaction shows that 1 mole of iron reacts with 1.5 moles of chlorine to produce 1 mole of iron (III) chloride. Therefore, the moles of iron (III) chloride produced from 0.448 moles of iron is also 0.448 moles.

To calculate the mass of iron (III) chloride produced, multiply the moles of iron (III) chloride by its molar mass (162.20 g/mol). Mass of iron (III) chloride = moles of iron (III) chloride × molar mass of iron (III) chloride = 0.448 moles × 162.20 g/mol = 72.67 g.

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in a redox reaction,how can you tell if an element is being oxidized ​

Answers

When reduction occurs, an element gains electrons and its oxidation number decreases or is reduced (becomes more negative). To determine if a redox reaction has occurred and to identify the element oxidized and the element reduced: . Compare oxidation numbers from the reactant side to the product side of the equation.

what is the VSEPR theory

Answers

Answer:

The VSEPR theory stands for the valence shell electron pair repulsion theory. It is a model used in chemistry to predict the geometry of individual molecules from the number of electron pairs surrounding their central atoms.

Answer:

It predicts individual molecules from electron pairs surrounding the central atom.

Explanation:

Its A Valence Shell Electron Pair Repulsion Theory.

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