How would you figure-out which one is greater. You have 2.0 moles of H2O and 1.0 moles ofCO2 how would you get the answer.

To determine which quantity is greater between 2.0 moles of H2O and 1.0 moles of CO2, you need to compare their molar masses. The molar mass of a substance is the mass of one mole of that substance.

To find the molar mass of H2O, you can use the periodic table. Hydrogen (H) has a molar mass of approximately 1.01 g/mol, and oxygen (O) has a molar mass of approximately 16.00 g/mol. Since there are two hydrogen atoms and one oxygen atom in H2O, you can calculate its molar mass as follows:

(2 * molar mass of hydrogen) + molar mass of oxygen = (2 * 1.01 g/mol) + 16.00 g/mol = 18.02 g/mol

Therefore, the molar mass of H2O is approximately 18.02 g/mol.

For CO2, carbon (C) has a molar mass of approximately 12.01 g/mol, and oxygen (O) has a molar mass of approximately 16.00 g/mol. Since there is one carbon atom and two oxygen atoms in CO2, you can calculate its molar mass as follows:

molar mass of carbon + (2 * molar mass of oxygen) = 12.01 g/mol + (2 * 16.00 g/mol) = 44.01 g/mol

Therefore, the molar mass of CO2 is approximately 44.01 g/mol.

Now that you have the molar masses of H2O and CO2, you can compare them to determine the greater quantity. In this case, since the molar mass of H2O (18.02 g/mol) is less than the molar mass of CO2 (44.01 g/mol), 1.0 mole of CO2 has a greater mass than 2.0 moles of H2O.

So, based on their molar masses, 1.0 mole of CO2 is greater in terms of mass compared to 2.0 moles of H2O.