4.5 grams

The unit is denoted by mol.

1. The formula for the number of moles formula is expressed as.
2. Given.
3. Number of moles formula is.
4. Number of moles = Mass of substance / Mass of one mole.
5. Number of moles = 95 / 86.94.

The mole is a measure or the base unit for the amount of substance present in the given sample. 1 mole is number which is equal to 6.022 x 1023 particles, also known as the Avogadro’s constant.

Multiply the molecular weight by the number of moles for the substance. The molecular weight is the number of grams per mole for the substance and gives the conversion factor for moles to grams for that particular substance. So, one mole of water has a mass of 18.02 grams (1 mol H2O x 18.02 g/mol = 18.02 g).

6.941 grams

1 mole is equal to 1 moles Lithium, or 6.941 grams.

Answer: There are 2.16 moles of Lithium in 15 grams. Look at the periodic table to find the molar mass of an element. Molar mass of Lithium is 6.9410 g/mol.

Answer: The correct answer is 27.764 grams.

Based on the chemical formula, we have 2 atoms of Li, so the atomic weight of Li has to be multiplied by 2 to obtain 13.88 g/mol.

The number in a mole, Avogadro’s number, is related to the relative sizes of the atomic mass unit and gram mass units. Whereas one hydrogen atom has a mass of approximately 1 u, 1 mol of H atoms has a mass of approximately 1 gram….

44.01g

There are 3.6132 x 1024 oxygen atoms in exactly three moles of carbon dioxide.