Which of the following contains the largest number of molecules?
a) 10.0 g CH4 b) 10.0 g C2H6 c) 10.0 g SO2 d) 10.0 g Xe

Which of the following contains the largest number of molecules? a) 10.0 g CH4 b) 10.0...
Which of the following contains the largest mass percent hydrogen? a.10.0 g H2S b.10.0 g H2O c.10.0 g C2H6 d.10.0 g CH4
A) Calculate the number of molecules of CH4 in 72 g CH4. B) The number of grams in 3.33 mol of sodium carbonate is C) 3.44 g of Ca represents how many moles? D) 8.55 x 10-3 moles of an unknown compound has a mass of 0.376 g. The compound could be:
Which ONE of the following samples contains the largest number of atoms? A) 1 g N2 B) 1 g Li C) 1 g Cl2 D) 1 g P4 E) 1 g Mg
Question 3 (1 point) Which contains the largest total number of atoms? O 1 mol C2H6 O2 mol CH4 O 3 mol H2O 06 mol He All contain the same number of atoms
5. Which of the following represents the least number of molecules? A. 30.0 g of H20 B. 77.0 g of CH4 C. 68.0 g of CaH2 D. 100.0 g of N20 E. 84.0 g of HF 6. Calculate the molarity of a 39.75-ml solution which contains 95.37 mg of sodium bicarbonate (NaHCO3 mass = 84.01 g/mol). A. 0.02399 M B 0.02856 M C. 0.2399 M 0.286 M D. 7. What is the mass percent of sodium acetate in a solution...
Vessel A contains CO(g) at 0°C and 1 atm. Vessel B contains SO2(g) at 20°C and 0.5 atm. The two vessels have the same volume. a) Which vessel contains more molecules? b) Which contains more mass? c) In which vessel is the average kinetic energy of molecules higher? d) In which vessel is the rms speed of molecules higher? (Could you write it out neatly please)
A flask contains 0.50 mole of SO2(g), 1.50 mole of CH4(g) and 1.0mole of O2(g). The total pressure of the gases in the flask is 1000mmHg. Which is closest to the partial pressure of the O2 (g) in the flask?
Which of the following samples contains the greatest number of atoms? A) 100 g of Pb B) 2.0 mole of Ar C) 0.1 mole of Fe D) 5 g of He E) 20 million O2 molecules
which of the following molecules should dissolve well in vegetable oil? a) N2 b) CH4 c) HCl d) PF3
Predict the largest intermolecular force between the two
molecules (or atoms) in each of the following cases:(Choose
between: Ion-Dipole, Dipole-Dipole, H Bond, Ion-Induced Dipole,
Dipole-Induced Dipole, or Dispersion Forces)
a) (CH3)2CO -
(CH3)2CO (two molecules of acetone)
b)
H2 - Ne
c) H2O - H2
d) H2O - (CH3)2CO
e) HF - CH4
f) HF - (CH3)2CO
g) O2 - CH4
h) CH3OH - CH3CH2OH