Question

choose the best answers using the equation.
$2\ce{c4h10}(g) + 13\ce{o2}(g) \
ightarrow 8\ce{co2}(g) + 10\ce{h2o}(g)$

1. choose the best answer.

what is the coefficient of $\ce{co2}$?
\\(\circ\\) 10
\\(\circ\\) 8
\\(\circ\\) 2
\\(\circ\\) 13

1. choose all that apply.

what are the two products?
\\(\square\\) $\ce{co2}(g)$
\\(\square\\) $\ce{c4h10}(g)$
\\(\square\\) $\ce{o2}(g)$
\\(\square\\) $\ce{h2o}(g)$

Explanation:

Question 1

Step1: Identify the term for \( \text{CO}_2 \)

In the chemical equation \( 2\text{C}_4\text{H}_{10}(g) + 13\text{O}_2(g)
ightarrow 8\text{CO}_2(g) + 10\text{H}_2\text{O}(g) \), the coefficient is the number in front of a chemical formula. For \( \text{CO}_2 \), the number before it is 8.

In a chemical reaction, reactants are on the left side of the arrow, and products are on the right side. The equation is \( 2\text{C}_4\text{H}_{10}(g) + 13\text{O}_2(g)
ightarrow 8\text{CO}_2(g) + 10\text{H}_2\text{O}(g) \). So the products are \( \text{CO}_2(g) \) and \( \text{H}_2\text{O}(g) \), while \( \text{C}_4\text{H}_{10}(g) \) and \( \text{O}_2(g) \) are reactants.

Answer:

B. 8 (assuming the options are labeled with letters, but based on the numbers, the correct coefficient is 8, so the option with 8 is the answer)

Question 2