CUMULATIVE EXAM CHEMISTRY
FINAL EXAM NEWEST ACTUAL EXAM
COMPLETE 100 QUESTIONS AND
CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) | ALREADY
GRADED A+ 2024-2025
A gas cylinder at a pressure of 4408 torr contains a
mixture of N2, O2, and helium gases. If the partial
pressure of N2 gas is 1520 torr and the partial pressure of
helium is 25 torr, what is the partial pressure of O2?
A) 760 torr
B) 4020 torr
C) 5953 torr
D) 2863 torr Correct Answer D) 2863 torr
A cylinder of gas originally at 28.0°C and 1.00 atm of
pressure is heated to 112.0°C. What is the new pressure?
A) 4.00 atm
B) 0.250 atm
C) 0.782 atm
D) 1.28 atm Correct Answer D) 1.28 atm
What is the %(w/v) of a 1500mL solution containing 45 g
of NaCl?
A) 5%
B) 3%
,C) 2%
D) 0.030% Correct Answer B) 3%
If 25.0 mL of 3.0 M HCl are diluted to give a final volume
of 150 mL, what is the new concentration?
A) 0.50 M
B) 75 M
C) 2.0 M
D) 4.5 M Correct Answer A) 0.50 M
The concentration of calcium ion in blood is found to be
1.21 mmol/L. What is this concentration in mEq/L?
A) 0.605 mEq/L
B) 1.21 mEq/L
C) 2.42 mEq/L
D) 4.84 mEq/L Correct Answer C) 2.42 mEq/L
Which is not a common characteristic of an acid?
A) it turns litmus pink/red
B) it feels soapy
C) it dissolves common metals
D) all of the above are common characteristics of acids
Correct Answer B) it feels soapy
Whenever an equilibrium constant, Keq, has a value
greater than 1, which of the following statements is true at
equilibrium?
A) There are more reactants than products
B) The concentration of products is the same as the
concentration of reactants
C) There are more products than reactants
, D) Relative composition of reaction mixture cannot be
predicted Correct Answer C) There are more products
than reactants
A solution has a [H3O+] of 1 x 10-5. What is the [OH-] of
the solution?
A) 1 x 10-5
B) 1 x 10-7
C) 1 x 10-9
D) 1 x 10-14 Correct Answer C) 1 x 10-9
A weak acid
A) does not dissolve in water
B) ionizes slightly in water to give molecules and a few
ions
C) ionizes 100% in water to give all ions
D) dissolves in water only as molecules Correct Answer B)
ionizes slightly in water to give molecules and a few ions
To prevent respiratory alkalosis,
A) the kidneys increase the bicarbonate production
B) the kidneys decrease the bicarbonate production
C) the kidneys secrete fewer hydrogen ions.
D) the body retains less carbon dioxide. Correct Answer
B) the kidneys decrease the bicarbonate production
Which one of the following can be added to lemon juice to
increase its pH?
A) lime juice
B) baking powder
C) concentrated hydrochloric acid
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