The Balanced Chemical Equation for the Combustion of Methane Is $\to$

question 1

Multiple Choice

The balanced chemical equation for the combustion of methane is:
CH₄(g) + 2 O₂(g) $\to$ CO₂(g) + 2 H₂O(g)
Which of the following statements concerning this chemical equation is/are correct?
1) One gram of methane gas reacts with two grams of dioxygen gas,producing one gram of carbon dioxide gas and two grams of gaseous water.
2) One mole of methane gas reacts with two moles of dioxygen gas,producing one mole of carbon dioxide gas and two moles of gaseous water.
3) One molecule of methane gas reacts with two molecules of dioxygen gas,producing one molecule of carbon dioxide gas and two molecules of gaseous water.

• A) 1 only
• B) 2 only
• C) 2 and 3
• D) 1 and 3
• E) 1,2 and 3

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Definitions:

Relationship Between Variables

This concept refers to how two or more variables are connected or affect each other within a study or analysis.

Direction

In statistics, it refers to the tendency of a set of data points or a relationship between variables (e.g., positive or negative correlation).

Correlation Coefficient

A statistical measure that calculates the strength of the relationship between two variables.

Independent Variable

A variable in scientific research that is manipulated or changed to observe its effect on a dependent variable.