What is the mass of sodium (Na) in grams present in 7.5 grams of sodium benzoate (NaC7H5O2)?

What is the mass in grams of 5.47 × 10^19 molecules of CCl2F2 (molar mass = 120.91 g/mol)?

A 5.65 g sample of a weak acid with Ka=1.3×10⁻⁴ was combined with 5.20 mL of 5.90 M NaOH and the resulting solution was diluted to 750 mL. The measured pH of the solution was 4.20. What is the molar mass of the weak acid?

A condensation reaction involving 200 glucose molecules, C6H12O6, results in a polysaccharide. What is the molar mass, in g/mol, of the polysaccharide, assuming complete reaction and loss of water molecules?

Calculate the mass percent composition of carbon in C2H6O.

Calculate the mass, in grams, of 0.105 moles of sucrose (C12H22O11), given that the molar mass of sucrose is approximately 342.3 g/mol.