Multiple Choice
What is the mass of 2 moles of HgO?
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2. Atoms & Elements
Calculating Molar Mass
Back2. Atoms & Elements
Calculating Molar Mass
- Multiple ChoiceA sample of an unknown gas has a density of 4.75 g/L at 3.00 atm and 45.0 °C. What is the molar mass of the gas?22views
- Multiple ChoiceWhat is the molar mass of strontium chloride (SrCl_2)?26views
- Multiple ChoiceWhat is the mass in grams of 1.00 \times 10^6 sodium atoms? (Atomic mass of Na = 22.99 g/mol)35views
- Multiple Choice
Calculate the molecular weight of C3H5N3O3.
2360views27rank2comments - Multiple Choice
The reaction between nickel metal and hydrochloric acid is not a simple dissolution. The product formed is NiCl2 • 6 H2O (s), nickel (II) chloride hexahydrate, which has exactly 6 waters of hydration in the crystal lattice for every nickel ion. What is the molar mass of nickel (II) chloride hexahydrate, NiCl2 • 6 H2O (s)?
4310views19rank1comments - Multiple Choice
What is the molar mass of diazepam also known as Valium if 0.05570 mol weighs 15.86 g?
2933views21rank1comments - Multiple ChoiceUse the data in the table to calculate the atomic mass of silicon.
Exact Mass and Abundance of 3 Isotopes of Silicon Isotope Isotopic Mass Abundance 28Si 27.97693 amu 92.23% 29Si 28.97649 amu 4.67% 30Si 29.97376 amu 3.10% 920views - Multiple ChoiceThe atomic mass of argon is 39.948 amu. Without any mathematical computations, which of the following isotopes has the largest natural abundance?
Exact Mass 3 Isotopes of Argon Isotope Isotopic Mass 36Ar 35.96755 amu 38Ar 37.96272 amu 40Ar 39.96238 amu 2940views - Multiple ChoiceWhich of the following represents the largest amount of Ag?667views
- Open Question
What is the molar mass of CHCl3? 48.47 g/mol, 83.92 g/mol, 119.37 g/mol, or 121.39 g/mol?
809views - Open Question
Which is the molar mass of H2O? 10.02 g/mol 16.00 g/mol 17.01 g/mol 18.02 g/mol
704views - Open Question
Here is the query: What is the molar mass of fluorine, F2? Is it 9.00 g/mol, 18.00 g/mol, 19.00 g/mol, or 38.00 g/mol?
987views - Open QuestionCalculate the molar mass of each compound. keep at least one decimal place in atomic masses from the periodic table.768views
- Open Question
Which is the formula mass of Na2SO4? 119.06 amu, 125.98 amu, 142.05 amu, or 174.12 amu?
694views