Final answer:
The density of a gas with a molar mass of 70.49 g/mol is 3.147 g/L at standard temperature and pressure.
Step-by-step explanation:
The student has asked for the density in g/L of a gas with a molar mass of 70.49. The density of a gas at standard temperature and pressure (STP), which is 0°C and 1 atmosphere, can be found using the molar mass and the molar volume of an ideal gas, which is 22.4 L/mol.
To calculate the density (d) at these conditions, we can use the following formula:
d = molar mass (g/mol) / molar volume (L/mol)
Plugging the values in:
d = 70.49 g/mol / 22.4 L/mol
This gives us the density of the gas: d = 3.147 g/L.
However, it's worth noting that this value is for STP conditions and actual density can vary with temperature and pressure changes, but since no additional information is given, STP conditions are assumed.
Think about your result: Since our calculated density is greater than 1 g/L, we can confirm that the molar mass of the gas being greater than 22.4 is reasonable as per the given information.