How many moles of gas X are present if the gas has a volume of 2dm³ at room temperature and pressure? Give your answer to 2 decimal places.

Approximately , assuming that this gas is an ideal gas.

Explanation:

Look up the standard room temperature and pressure: and .

The question states that the volume of this gas is .

Convert the unit of all three measures to standard units:

.

.

.

Look up the ideal gas constant in the corresponding units: .

Let denote the number of moles of this gas in that . By the ideal gas law, if this gas is an ideal gas, then the following equation would hold:

.

Rearrange this equation and solve for :

.

In other words, there is approximately of this gas in that .

i'm assuming that it's c.) red bank..

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.