The concentration of a solution
A) can be expressed in a variety of units
B) is always expressed in units of ppm or ppb
C) is always expressed as a percentage
D) is always expressed in units of molarity
A
Household hydrogen peroxide is typically a solution of 3% H2O2 and 97% water. In hou...
Chem 1010 Week 5
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The concentration of a solution
A) can be expressed in a variety of units
B) is always expressed in units of ppm or ppb
C) is always expressed as a percentage
D) is always expressed in units of molarity
A
Household hydrogen peroxide is typically a solution of 3% H2O2 and 97%
water. In household hydrogen peroxide
A) water is the solvent and H2O2 is the solute
B) H2O2 is the solvent and water is the solute
C) the molarity needs to be calculated to determine the solvent and the
solute
D) the solvent and solute cannot be determined
A
How many grams of NaF are in 125 mL of a 1.31 M solution?
A) 7.50 x 10^3 g
B) 6.88 g
C) 3.90 x 10^-3 g
D) 7.50 g
D
What information is needed to calculate the molarity of an acetic acid
solution?
A) The molecular formula of acetic acid, the number of moles of dissolved
acetic acid, and the volume of the solution.
, B) Only the number of moles of dissolved acetic acid and the volume of
the solution
C) Only the number of moles of dissolved acetic acid
D) Only the volume of the solution
B
What information is needed to calculate the molarity of an isopropyl
alcohol solution?
A) The molecular formula of isopropyl alcohol, the number of moles of
dissolved isopropyl alcohol, and the volume of the solution.
B) Only the number of moles of dissolved isopropyl alcohol and the volume
of the solution
C) Only the number of moles of dissolved isopropyl alcohol
D) Only the volume of the solution
B
Distillation analysis of vodka sample shows that a 20.0 mL sample
contains a 8.81 mL of ethanol. What is the percentage of ethanol in the
sample?
A) 44.0 (v/v)%
B) 2.27 (v/v)%
C) 44.0 (w/w)%
D) 2.27 (w/w)%
A
What volume of 12 M HCl solution is required to prepare exactly 500 mL of
a 0.60 M HCl solution?
A) 25 mL
B) 50 mL
C) 100 mL
D) 200 mL
A
We have an expert-written solution to this problem!
A hydroponic fertilizer solution contains 24.9 ppm of magnesium in water
which is equivalent to 24.9 mg/L. What is the total mass of magnesium in
65 L of the fertilizer solution?
A) 0.383 g
B) 1.62 g
C) 1.62 kg
D) 2.61 kg
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