An unknown gas has a molecular weight of 30.07 g/mol. What is the density of the gas at STP?

density = mass/volume = 30.07/22.4

You know a mole of any gas at STP occupies 22.4 L.

1.34

To find the density of a gas at STP (Standard Temperature and Pressure), you need to know its molar mass. In this case, the molecular weight of the gas is given as 30.07 g/mol.

Before calculating the density, we need to define the conditions of STP:
- Temperature: 0 degrees Celsius or 273.15 Kelvin
- Pressure: 1 atmosphere or 101.325 kilopascals (kPa)

Now, let's proceed to calculate the density of the gas.

Step 1: Calculate the number of moles.
To do this, we divide the mass of the gas by its molar mass.
Number of moles = mass of the gas / molar mass
However, we don't have the mass of the gas given in the question. We need more information to proceed further.

Please provide additional information such as the volume or pressure of the gas, as this information is needed to calculate the density.