Question

question 5
1 pts
coefficients for a chemical reaction are usually represented as the smallest set
of
o exponents
o fractions
o imaginary numbers
o whole - numbers ratios
question 6
1 pts
methane and oxygen react to yield carbon dioxide and water in a
o 1:2:1:2 ratio
o 1:1:1:1 ratio
o 2:2:1:2 ratio
o 1:2:1:3 ratio

Explanation:

Question 5

In chemical reactions, coefficients are used to balance the equation. They represent the number of molecules or moles of each substance. Whole - number ratios are preferred as they give a simple and clear representation of the relative amounts of reactants and products. Exponents are used in chemical formulas (e.g., in \(H_2O\), the 2 is an exponent for hydrogen), fractions can be used but are often converted to whole - number ratios (by multiplying through the equation), and imaginary numbers have no physical meaning in the context of chemical reaction coefficients.

The balanced chemical equation for the combustion of methane (\(CH_4\)) is \(CH_4 + 2O_2
ightarrow CO_2+2H_2O\). The coefficients of \(CH_4:O_2:CO_2:H_2O\) are \(1:2:1:2\).

Answer:

whole - numbers ratios

Question 6