Calculate the number of grams in each of the following:

A)0.5 moles of F2
B)10.25 moles of H2
C)11.3 moles of BaSO4

g = moles x molar mass

a. 19 grams

b. 20.71 grams
c. 2637.42 grams

To calculate the number of grams in each of the given substances, we can use the concept of molar mass. Molar mass is the mass of one mole of a substance and is expressed in g/mol.

To find the number of grams, you can use the following formula:
grams = moles * molar mass

A) 0.5 moles of F2:
The molar mass of F2 can be calculated by adding the atomic masses of two fluorine atoms. Since the atomic mass of fluorine is approximately 19 grams per mole, the molar mass of F2 is 2 * 19 = 38 g/mol.
To find the number of grams, multiply the number of moles (0.5) by the molar mass:
grams of F2 = 0.5 moles * 38 g/mol = 19 grams

B) 10.25 moles of H2:
The molar mass of H2 can be calculated by adding the atomic masses of two hydrogen atoms. Since the atomic mass of hydrogen is approximately 1 gram per mole, the molar mass of H2 is 2 grams per mole.
To find the number of grams, multiply the number of moles (10.25) by the molar mass:
grams of H2 = 10.25 moles * 2 g/mol = 20.5 grams

C) 11.3 moles of BaSO4:
The molar mass of BaSO4 can be calculated by adding the atomic masses of barium (Ba), sulfur (S), and four oxygen atoms (O). The atomic masses of Ba, S, and O are approximately 137 g/mol, 32 g/mol, and 16 g/mol, respectively.
To find the number of grams, multiply the number of moles (11.3) by the molar mass:
grams of BaSO4 = 11.3 moles * (137 g/mol + 32 g/mol + 4 * 16 g/mol) = 1721.4 grams

Therefore, the number of grams in each substance is:
A) 19 grams of F2
B) 20.5 grams of H2
C) 1721.4 grams of BaSO4