Answer Options:
Q > K
Q < K
E^0 cell > 0
ΔG^0 = 0
E^0 cell < 0
Answer: E^0 cell < 0
Question: Calculate the molarity of this solution: 70.5 g of HCl in 1.50 L of a HCl solution.
Answer Options:
Answer: 1.29
Question: What is the charge of the sulfur ion represented by this dot structure?
Answer Options:
1-
2-
0
1+
2+
Answer: 2-
Question: Which of the following is a pure substance? Choose the best answer(s).
Answer Options:
glass, compound
ice, mixture
aluminum foil, element
lotion, mixture
Answer: aluminum foil, element
Question: A nonpolar compound generally have lower freezing points than polar compounds.
Answer Options:
True
False
Answer: True
Question: Calculate the [OH-] if the [H+] = 1.5×10^-6 M.
Answer Options:
6.67 x 10^-9
6.67 x 10^-8
6.67 x 10^-7
1.5 x 10^-2
Answer: 6.67 x 10^-9
Question: Identify the reducing agent in the reaction below
Na(s) + Cu^2+(aq) -> Cu(s) + Na^+(aq)
Answer Options:
Na^+(aq)
Na(s)
Cu^2+(aq)
Cu(s)
Answer: Na(s)
Question: In what direction does the hemoglobin equilibrium shift?
Answer Options:
The equilibrium shifts in the direction of the reactants.
The equilibrium shifts in the direction of the products.
The equilibrium does not change.
Answer: The equilibrium shifts in the direction of the products.
Question: Name this compound: MgSO4.
Answer Options:
Answer: magnesium sulfate
Question: Identify each element or property as being or describing a metal, nonmetal, or metalloid.
Answer Options:
an element that is a gas at room temperature
calcium
located in helium’s column/family
sulfur
bromine
a lustrous element
silver
bromine
an element COULD BE malleable
Answer: nonmetal
metal
nonmetal
nonmetal
nonmetal
metal
metal
metalloid
metalloid
Question: The smallest particle of an atom is a(n) ______.
Answer Options:
Answer: electron
Question: After balancing the partial reaction given below, what will be the balancing coefficient for the water, and which side of the equation will the water appear?
HSO4^-(aq) + Hg(l) -> Hg2SO4(s) + H2O(l) (acidic)
Answer Options:
6 waters appear on the products side.
3 waters appear on the products side.
5 waters appear on the products side.
2 waters appear on the products side.
10 waters appear on the reactants side.
Answer: 3 waters appear on the products side.
Question: Which of these is correct?
Answer Options:
NH3, strong acid
H3PO4, strong acid
NaOH, strong base
HCl, weak acid
C2H5OH, weak base
Answer: H3PO4, strong acid
Question: How many grams of SO3 can be produced from 7.45 grams of S8? (The reaction is already balanced.)
Answer Options:
Answer: 18.6
Question: Identify the solute in each of the following mixtures:
Answer Options:
1.0 g of acetic acid and 200 g of water
100.0 g of water and 5.0 g of sugar
50.0 g of methylene chloride and 10.0 g of Br2 (bromine)
Answer: acetic acid
sugar
bromine
Question: A titration experiment is set up where 92.50 mL of 0.2046 M methylamine, CH3NH2, is titrated using HBr (the HBr is placed in the burette). What should be the pH of the base before the titration begins?
Answer Options:
14.466
13.463
11.326
8.57
13.231
11.937
Answer: 13.231
Question: What is the solubility of strontium phosphate, Sr3(PO4)2, in 0.00724 M Na3PO4(aq)?
Ksp of Sr3(PO4)2 = 1.0 x 10^-31
Answer Options:
2.58 x 10^-7 M
1.29 x 10^-7 M
1.36 x 10^-7 M
1.13 x 10^-7 M
4.03 x 10^-7 M
2.43 x 10^-7 M
Answer: 2.43 x 10^-7 M
Question: Calculate the [H3O+][OH-] = 1.6×10^-14 M.
Answer Options:
Answer: This information is not visible in the provided image.
Question: A temperature of 54°C is ____ °F.
Answer Options:
Answer: 129.2
Question: How many valence electrons are in carbon?
Answer Options:
6
4
14
2
Answer: 4
Question: A patient receives 200 mL of a 3.0% (m/v) amino acid solution twice a day. How many grams of amino acids does the patient receive in a day?
Answer Options:
Answer: 12