Question 1

The chemical formula for methane is $ext {CH₄}$ .

Which statement describes the atoms present in FOUR molecules of methane?

Accepted Answer

Four molecules of methane would contain 4 atoms of carbon and 16 atoms of hydrogen.

Answer

Four molecules of methane would contain 1 atom of carbon and 4 atoms of hydrogen.

Answer

Four molecules of methane would contain 4 atoms of carbon and 1 atom of hydrogen.

Answer

Four molecules of methane would contain 16 atoms of carbon and 16 atoms of hydrogen.

Question 2

Sodium sulfate $ext {CH₄}$ is used to produce many products.

Which elements are represented in the formula AND how many atoms of each element are represented in the formula?

Accepted Answer

The formula contains three elements: Sodium (Na), Sulfur (S), and Oxygen (O). It represents 2 sodium atoms, 1 sulfur atom, and 4 oxygen atoms.

Answer

The formula contains three elements: Sodium (Na), Sulfur (S), and Oxygen (O). It represents 1 sodium atom, 2 sulfur atoms, and 4 oxygen atoms.

Answer

The formula contains two elements: Sodium (Na) and Sulfur Monoxide (SO). It represents 2 sodium atoms and 4 sulfur monoxide atoms.

Answer

The formula contains two elements: Sodium (Na) and Sulfur Monoxide (SO). It represents 4 sodium atoms and 2 sulfur monoxide atoms.

Question 3

Oxygen and oxygen‑containing compounds are involved in many different reactions. Which balanced equation represents a reaction that involves 14 atoms of oxygen?

Accepted Answer

$\mathrm{2C_2H_6 + 7O_2 \rightarrow 4CO_2 + 6H_2O}$

Answer

$\mathrm{2C_2H_6 + 7O_2 \rightarrow 4CO_2 + 6H_2O}$

Answer

$\mathrm{2C_2H_6 + 7O_2 \rightarrow 4CO_2 + 6H_2O}$

Answer

$\mathrm{2C_2H_6 + 7O_2 \rightarrow 4CO_2 + 6H_2O}$

Related quizzes

Related quizzes