Question

A candle with paraffin wax and a wick is burning as it reacts with oxygen in the air. After it was completely burned, you see some smoke (carbon dioxide gas) and
water vapor. Did you ever wonder what happens to the total mass of the reactants before and after burning?

C25H52 (s) + 38O2 (g) → 25CO2 (g) + 26H2O (l)
1.. What is the total mass of the candle wax and oxygen (reactants)?

2. What is the total mass of the carbon dioxide and water vapor (products)?

3. Describe the total mass of the reactants and the total mass of the products after the burning process?

4. Does the total mass of the reactants and the total mass of the products appear to be equal after chemical reaction or not? Why?

5. Why is it that you always end up with less paraffin wax after burning the candle than when you started it?

Answer 1

Answer:

1.1568g

2.1568g

3.the total mass of the reactants and products are always equal

4.yes, they are equal

5.because,the wax oxidizes or burns in the flame to yield water and carbon dioxide, which dissipate in the air around the candle in reaction that also yields light

Explation

sana makatulong

Answer 2

Answer:

1. 1568g

2. 1568g

3. same

4. No as the gases are released

5. reactants are used to produce products

Explanation:

1.Total mass of the candle wax and oxygen (reactants) is 1568g

C25H52 = 12(25)+ 1(52) = 352

 38O2 = 38(16)*2 = 1216

 352+1216=1568g

2. Total mass of the carbon dioxide and water vapor (products) is 1568g

25CO2  = 25{12+(16)*2} = 1100 (approx)

26H2O  = 26{(1*2) + 16} = 450 (approx)

3. The total mass of the reactants and the total mass of the products after the burning process will always remain the same in a balanced equation.

4.The total mass of the reactants and the total mass of the products appear to be unequal after chemical reaction as the product formed as gas desipitates in the atmosphere.

5.You always end up with less paraffin wax after burning the candle than when you started it because the reactants get used up to form the products.