Final answer:
In order to determine the mass and number of molecules in 2.00 moles of LiOH, we need to use the formula mass of LiOH and Avogadro's number. The formula mass of LiOH can be calculated by summing up the atomic masses The mass of 2.00 moles of LiOH is 47.90 g and the number of molecules is 1.2044 x 10^24 molecules.
Step-by-step explanation:
In order to determine the mass and number of molecules in 2.00 moles of LiOH, we need to use the formula mass of LiOH and Avogadro's number. The formula mass of LiOH can be calculated by summing up the atomic masses of lithium (Li), oxygen (O), and hydrogen (H). Then, we can use Avogadro's number to convert moles to molecules. Avogadro's number is 6.022 x 10^23 molecules/mol. The atomic masses of Li, O, and H are approximately 6.94 g/mol, 16.00 g/mol, and 1.01 g/mol respectively.
Therefore, the formula mass of LiOH = (6.94 g/mol) + (16.00 g/mol) + (1.01 g/mol) = 23.95 g/mol. To calculate the mass of 2.00 moles of LiOH, we can use the formula: mass = moles * formula mass mass = (2.00 moles) * (23.95 g/mol) = 47.90 g. To calculate the number of molecules, we can use Avogadro's number: number of molecules = moles * Avogadro's number number of molecules = (2.00 moles) * (6.022 x 10^23 molecules/mol) = 1.2044 x 10^24 molecules.