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Lyrx [107]
3 years ago
11

A mixture of C3H8C3H8 and C2H2C2H2 has a mass of 2.8 gg . It is burned in excess O2O2 to form a mixture of water and carbon diox

ide that contains 1.4 times as many moles of CO2CO2 as of water.
Find the mass of C2H2C2H2 in the original mixture.

Express your answer to two significant figures and include the appropriate units.
Chemistry
1 answer:
julsineya [31]3 years ago
8 0

Answer:

gghhgyuhuyyugffygcggyy

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Compute 9.3456+2140.56. Round the answer appropriately.
vichka [17]
This is just addition. Put 2140.56 on top, line up 9.3456 under it appropriately. Doing this will give you the answer: 2149.9056
5 0
3 years ago
CH3CO2H(aq) + H2O(l) ⇄ CH3CO2-(aq) + H3O+(l)
Evgen [1.6K]
Correct Answer: Option C:<span> The equilibrium position will shift to the right toward the products. 

Reason:
1) This problem is based on </span>Le Chatelier's principle. It is stated as '<em>any</em><span><em> changes in the temperature, volume, or concentration of a system will result in predictable and opposing changes in the system in order minimize this change and achieve a new equilibrium state.</em>' 

2) In present case, the reaction involved is: 
</span><span>                 CH3CO2H(aq) + H2O(l) ⇄ CH3CO2-(aq) + H3O+(l) 
</span>Hence, when the concentration of acetic acid (reactant) is increased, the equilibrium will shift to right to minimize the effect of change in concentration of reactant. 
4 0
3 years ago
Even if you don't touch a marshmallow to a campfire flame, holding a marshmallow near a flame causes it to toast and turn brown.
Olin [163]
Heat radiates from the fire and cooks the marshmallow because heat transfer.
6 0
3 years ago
Read 2 more answers
Given that you have 14.5 moles of n2, how many moles of h2 are theoretically needed to produce 30.0 moles of nh3 according to re
erastovalidia [21]

45 moles of H₂ are theoretically needed to produce 30.0 moles of NH₃

<h3>Further explanation</h3>

Stoichiometry in Chemistry learn about chemicals mainly emphasizes quantitative, such as the calculation of volume, mass, number, which is related to numbers, molecules, elements, etc.

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

In the reaction there are also manifestations of reagent substances namely gas (g), liquid (liquid / l), solid (solid / s) and solution (aqueous / aq).

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight/volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

  • Mole

The mole itself is the number of particles contained in a substance amounting to 6.02.10²³

Mole can also be sought if the amount of substance mass and its molar mass is known

\large{\boxed{\boxed{\bold{mol=\frac{mass}{molar\:mass}}}}

 

Reaction that happens :

N₂ +3H₂ ⇒ 2NH₃

mole N₂ : H₂ : NH₃ = 1 : 3 : 2

To produce 30.0 moles of NH₃,

  • H₂ needed :

mole~H_2~=~\frac{3}{2}\times~30~mole

mole H₂ = 45 mole

  • N₂ needed :

mole~N_2~=~\frac{1}{2}~\times~30

mole N₂ = 15 mole

So the minimum N₂ needed is: 15 mole

14.5 moles of N₂ can only produce NH₃ :

mole~NH_3~=~\frac{2}{1}~\times~14.5

mole NH₃ = 29 mole

<h3>Learn more </h3>

The mass of one mole of raindrops

brainly.com/question/5233234

moles of NaOH

brainly.com/question/4283309

moles of water you can produce

brainly.com/question/1405182

 

Keywords: mole,  NH₃, N₂, H₂

7 0
3 years ago
Read 2 more answers
Please help me with this. i also need to know what the word heat means.
aliina [53]
Heat is like the fire it’s hot.
I think it’s B
Sorry if I’m wrong
3 0
3 years ago
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