What is the mass (in grams) of 1.4x1024 molecules of carbon dioxide?

Sure, here are the steps to calculate the mass of 1.4x10^24 molecules of carbon dioxide (CO2):

1. First, we need to know the molar mass of CO2. The molar mass of carbon (C) is approximately 12.01 g/mol, and the molar mass of oxygen (O) is approximately 16.00 g/mol. Since CO2 has one carbon atom and two oxygen atoms, its molar mass is 12.01 g/mol + 2*(16.00 g/mol) = 44.01 g/mol.

2. Avogadro's number tells us that there are approximately 6.022x10^23 molecules in one mole.

3. Therefore, 1.4x10^24 molecules of CO2 is (1.4x10^24 molecules) / (6.022x10^23 molecules/mol) = 2.32 moles.

4. Finally, to find the mass in grams, we multiply the number of moles by the molar mass: (2.32 moles) * (44.01 g/mol) = 102.1 grams.

So, the mass of 1.4x10^24 molecules of CO2 is approximately 102.1 grams.