How many atoms are in 0.78 mol Si?

Q: How many moles of C (to two decimal places) are found in 6.87 x 1024 C atoms?

A: Given,The number of carbon (C) atoms = 6.87 x 1024  C atoms.

Q: How many molecules of H2O are in 12.9 grams of H2O?

A: Given :- mass of water = 12.9 g  To calculate :- number of molecules

Q: The number of moles of potassium that contains 8.47×1025 atoms.

A: Given,Number of potassium atoms = 8.47 × 1025

Q: How many grams are in 1.0 moles of C6H10S?

A: 1 mole of any substance consits of grams equal to its molar or molecular mass.

Q: What is the mass in grams of 1 carbon tetrafluoride molecule?

A: Carbon tetrafuoride molecule has formula = CF4

Q: How many phosphorus atoms are present in 17 g of beryllium phosphide?

A: To find the number of phosphorus atoms in 17 g of beryllium phosphide, you can follow these…

Q: How many molecules of water, H2O, are present in 75.0 g of H2O?

A: • 1 mole = 6.023 x 1023 molecules.   1 mole = molar mass.   1 mole of H2O Contain = 6.023 x 1023…

Q: A 69.5 g69.5 g sample of the compound X3O4X3O4 contains 19.2 g19.2 g of oxygen atoms. What is the…

A: First Calculate mas percent of oxygen in compound   Total mass of oxygen in sample is 64g  Then need…