Open Question
Which is the molar mass of BF3? 10.81 g/mol 29.81 g/mol 48.81 g/mol 67.81 g/mol
2. Atoms & Elements
Calculating Molar Mass
Back2. Atoms & Elements
Calculating Molar Mass
- Open Question
Determine the formula weight of Ca(NO3)2. Provide an answer to two decimal places.
- Open Question
What is the molar mass of 1-butene if 5.38 × 1016 molecules of 1-butene weigh 5.00 μg?
- Open Question
What is the molar mass of Al2(SO4)3? 150.03 g/mol 278.03 g/mol 342.17 g/mol 450.09 g/mol
- Open Question
Determine the formula weight of Al2(SO4)3. Provide an answer to two decimal places.
- Open Question
What is the molar mass of (NH4)2O? Explain how you calculated this value.
- Open Question
What is the molar mass of Mg3(PO4)2, a substance formerly used in medicine as an antacid?
- Open Question
What is the molar mass of Mg3(PO4)2, a substance formerly used in medicine as an antacid?
- Open Question
What is the molar mass of (NH4)2O? explain how you calculated this value.
- Open Question
Determine the molar mass of Al2(SO4)3･5H2O. Provide an answer to two decimal places.
- Multiple ChoiceWhat is the mass in grams of 5.47 × 10^19 molecules of CCl2F2 (molar mass = 120.91 g/mol)?
- Multiple ChoiceWhat is the mass of sodium (Na) in grams present in 7.5 grams of sodium benzoate (NaC7H5O2)?
- Multiple ChoiceA 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?
- Multiple ChoiceA 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?
- Multiple ChoiceCalculate the mass percent composition of carbon in C2H6O.