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patriot [66]
2 years ago
5

What does evaporation and condensation change from

Chemistry
1 answer:
IrinaVladis [17]2 years ago
5 0

Answer:

evaporation: liquid to gas

condensation; gas to liquid

Explanation:

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Methane burns in oxygen to produce carbon dioxide and water. Which of the following represents a preliminary, unbalanced equatio
german

The correct option is: CH4 + O2 → CO2 + H2O.

In writing chemical equations, the reactants are usually written to the left of the equation of the reaction while the products are written to the right of the reaction. An arrow pointing in the right direction shows the direction of the reaction. In the question given above, methane and oxygen are the reactants while carbon dioxide and water are the products. The options that states the chemical reaction correctly is option 1.

3 0
2 years ago
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Methane is a major component of natural gas, which is used as a fuel in homes. write a balanced equation for the complete oxidat
Likurg_2 [28]
CH4 +2 O2 ----> CO2 +2H2O
8 0
3 years ago
When 1.82 moles of HCL reacts with excess MnO2, how many moles of Cl2 form
s2008m [1.1K]

The balanced reaction is:<span>

MnO2(s) + 4HCl(aq) → Cl2(g) + MnCl2(aq) + 2H2O(l)

We are given the amount of hydrochloric acid to be used for the reaction. This will be the starting point for the calculations.

1.82 mol HCl ( 1 mol Cl2 / 4 mol HCl) = 0.46 mol Cl2

<span>Therefore, 0.46 mol of chlorine gas is produced for the reaction of hydrochloric acid and manganese oxide.</span></span>

5 0
2 years ago
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If 765 mL of a gas at 2.78 atm, has the volume Change to 2.47 L , What is the pressure of the
vampirchik [111]

Answer:

<h2>0.87 atm </h2>

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

P_1V_1 = P_2V_2

Since we are finding the new pressure

P_2 =  \frac{P_1V_1}{V_2}  \\

From the question

2.47 L = 2470 mL

We have

P_2 =  \frac{765 \times 2.78}{2470}  =  \frac{2142}{2470}  \\  = 0.867206...

We have the final answer as

<h3>0.87 atm</h3>

Hope this helps you

3 0
3 years ago
A gas occupies 3.60 L when the temperature is 45.0oC and at 1.02 atm of pressure. What temperature change (in K) will be needed
dedylja [7]
As we know V1/T1=V2/T2
so,   V1=3.60
        V2=6.25
        T1=45c=318k
        T2=required
solution!
            T2=V2 multiply by T1/V1 so
   put the values and find your answer which should be 552k
5 0
3 years ago
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