2. Atoms & Elements

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

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

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.

What is the molar mass of chloroform (CHCl₃) given that a sample weighing 0.389 g is collected in a flask with a volume of 102 cm³ at 97°C and a pressure of 728 mmHg?

How many fluorine atoms are present in 135 g of CF2Cl2?

How many grams are in 0.16 moles of sodium carbonate (Na2CO3)?

What is the molar mass of titanium (Ti) in grams per mole?

What is the molar mass of aspirin (C9H8O4)?

What is the molar mass of sodium acetate trihydrate (NaC2H3O2·3H2O)?

What is the molar mass of a compound if it is given as 194.19 g/mol, and how can this value be used to convert from mass to moles?

What is the molar mass of sucrose (C12H22O11) in grams per mole?