PROBLEM SETS Flashcards
What is the volume (cm^3), a 6.3 grams of lead?
DENSITY = 11.3g/cm^3
5.62 x 10^(-1) cm^3 or 0.562 cm^3
What is the mass in grams of a 9.00 cm^3 piece of lead? DENSITY = 11.3g/cm^3
102 grams
A student was given a 0.0811% solution (w/w) of HNO3. a) How many ppm was the solution? b) What is the molarity if the molar mass of HNO3 is 63.01 g/mol? (Assuming that the density is 1g/mL)
a) 8.11 x 10^4 ppm
b) 1.28 x 10^(-2)
Methyl alcohol can be prepared commercially by the reaction of hydrogen with carbon monoxide
CO(g) + 2H_2(g) = CH3OH(g) under equilibrium conditions at 700K
H2 = 0.072 mol/L
CO = 0.020 mol/L
CH3OH > 0.030 mol/L
2.9 x 10 ^2
In an experiment, hydrogen iodide was found to be 22.3% dissociated at 730.8K. Calculate Keq for the reaction.
2HI(aq) = H_2(g) + I_2(G)
INITIAL 1.00
0.0824
A = B + C
Keq = 3.0 x 10 ^(-6)
[A] = 5.0 mol/L
3.9 x 10^(-3)
H2(g) + I2(g) = 2HI
INITIAL: 10.00
0.525
What is the concentration of CO equilibrium in a sample of gas originally containing 1.00 mol/L of CO2?
Keq = 2.96 x 10^(-92)
1.95 x 10 ^(-31)
Determine the molarity.
0.444 mol of CoCl2 in 0.654 L of solution
0.679 M
Determine the molarity.
98.0 g of phosphoric acid, H3PO4, in 1.00 L of solution
1.00 M
Determine the molarity.
0.2074 g of calcium hydroxide, Ca(OH)2, in 40.00 mL of solution
0.06998 M
Determine the molarity.
10.5 kg of Na2SO4·10H2O in 18.60 L of solution
1.75 M
Determine the molarity.
1.8 × 104 mg of HCl in 0.075 L of solution
6.6 M
Determine the molarity.
7.0 × 10−3 mol of I2 in 100.0 mL of solution
0.070 M
Determine the molarity.
1.457 mol KCl in 1.500 L of solution
0.9713 M
