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2 years ago

When 12 moles of o2 react with 1.1 mole of c10h8 what is the limiting reactant?

2 answers:

6 0

1.1 moles of C10H8 is the limiting reagent in the reaction between reaction C10H8 and O2
.
C10H8 + 12O2 ----> 10CO2 + 4H2O

C10H8 is the limiting reagent since 1.1 moles of C10H8 is totally consumed during the reaction

mariarad [96]2 years ago

6 0

Answer: C10H8 is the limiting Reactant

Explanation:

Ok, before delving into this question let us take some definitions.

WHAT IS A LIMITING REACTANT?

A limiting Reactant is also called a limiting reagent. From the English word ''limiting' that is setting a limit, a boundary to something. Thus, in Chemistry, a limiting reagent can be defined as the chemical substance (in a chemical reaction) that determines how much a chemical reaction can go on to generate product(s).

What is an Excess Reactant: an Excess Reactant is the excessive reactants in any chemical equation. Let just say, it is the opposite of a limiting reagent.

With all these been said, let us write down the balanced chemical equation of the reaction;

C10H8 + 12 O2 --------> 10 CO2 + 4H2O.

From the Chemical reaction above, we can see that one mole of C10H8 reacts with 10 moles of Oxygen,O2 to give 10 moles of Carbondioxide, CO2 and 4 moles of water,H2O.

After using 1 mole From C10H8 the reaction should likely come to an end. If one mole of C10H8 reacts completely with one mole of O2, means that there will be an EXCESS OF 11 moles. Thus, the LIMITING REAGENT/REACTANT IS C10H8.

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How many grams of NH3 can be prepared from 85.5 grams of N2 and 17.3 grams of H2 ?

Tcecarenko [31]

N2 + 3H2 ---> 2NH3

mass of N2 = 28g
mass of H2 = 2g
mass of NH3 = 17g

according to the reaction:
28g N2----------------- 3*2g H2
85,5g N2-------------------- x
x = 18,32g H2 >>> so, nitrogen is excess

according to the reaction:
2*3g H2---------------------- 2*17g NH3
17,3g H2 ------------------------- x
x = 98,03g NH3

answer: 98,03g of NH3

4 0

2 years ago

Which of the following statements describe chemical properties?

Y_Kistochka [10]

Answer:

A. Oxygen gas supports combustion.

B. Hydrofluoric acid reacts with glass.

C. Fertilizers help to increase agricultural production.

Explanation:

Chemical properties can only be observed when a chemical change, i.e. a change in the chemical composition, occurs.

On the other hand, physical properties are observed or measured without altering the composition of the substances.

Typical examples of chemical properties are reactivity, flammability, combustion, oxidation states, acidity, among others that require to carry out a chemical reaction to be observed.

Typical examples of physical properties are freezing point, melting point, boiling point, density, solubility, corrosiveness, among others.

Thus, as for the choices you have:

A. Oxygen gas supports combustion: the only way to observe this property is by carrying out a combustion reaction, so this describes a chemical property.

B. Hydrofluoric acid reacts with glass: again, only by letting hydrofluoric acid react with glass this can be observed, so this is another example of a chemical property.

C. Fertilizers help to increase agricultural production: fertilizers are absorbed by the plants and converted by biochemical reactions, so this also describes a chemical property.

D. Water boils below 100°C on top of a mountain: boiling is a change of state, the water is H₂O and continues having the same composition after boiling, so this describes a physical property.

E. Lead is denser than aluminum: density is measured by physical media, measuring mass and volume; so this is a physical property.

4 0

2 years ago

Daniel is developing a model of the light-independent reactions of photosynthesis, also known as the Calvin cycle. How should th

marshall27 [118]

Answer:

*The model should show the carbon compounds enter as carbon dioxide

*The model should show the carbon compounds exit as 3-carbon molecules

Explanation:

In plants, carbon dioxide (CO2) enters the chloroplast through the stomata and diffuses into the stroma of the chloroplast—the site of the Calvin cycle reactions where sugar is synthesized. The reactions are named after the scientist who discovered them, and reference the fact that the reactions function as a cycle.

8 0

2 years ago

The actual size of a wood louse is 0.4mm but Robert drew his 5mm. What is the magnification?

melomori [17]

Answer:

Magnification is the number of times larger an image is compared with the real size of the object.

Magnification = Image / Actual = 5/0.4 =12.5

Explanation:

3 0

2 years ago

How many hydrogen bonds can CH2O make to water

VladimirAG [237]

Hydrogen bonds are not like covalent bonds. They are nowhere near as strong and you can't think of them in terms of a definite number like a valence. Polar molecules interact with each other and hydrogen bonds are an example of this where the interaction is especially strong. In your example you could represent it like this:

H2C=O---------H-OH 

But you should remember that the H2O molecule will be exchanging constantly with others in the solvation shell of the formaldehyde molecule and these in turn will be exchanging with other H2O molecules in the bulk solution. 

Formaldehyde in aqueous solution is in equilibrium with its hydrate. 

H2C=O + H2O <-----------------> H2C(OH)2

5 0

2 years ago