The Mass of Pennies and the Moon

What is the mass of 1 mole of pennies?

Final answer: The molar mass of 1 mole of pennies is 2.50 g/mol.

How many moles of pennies have a mass equal to the mass of the moon?

Final answer: The number of moles of pennies with a mass equal to the moon is 2.94 x 10^25 moles.

Explanation:

1. To determine the mass of 1 mole of pennies, we need to know the molar mass of a penny. The molar mass is the mass of one mole of a substance. Since 1 mole of anything is equal to 6.022 x 10^23 units, and a penny has a mass of 2.50 g, the molar mass of a penny is 2.50 g/mol.

2. To find out how many moles of pennies have a mass equal to the mass of the moon, we'll first convert the mass of the moon to grams. The mass of the moon is 7.35 x 10^22 kg which is equal to 7.35 x 10^25 g. Since the molar mass of a penny is 2.50 g/mol, we can calculate the number of moles of pennies using the formula:

Number of moles = mass in grams / molar mass

Number of moles = (7.35 x 10^25 g) / (2.50 g/mol) = 2.94 x 10^25 moles