Barrons SAT Subject Test Chemistry, 13th Edition
(A) Gibbs free energy combines the overall energy changes and the entropy change. The formula is ΔG = ΔH − TΔS. Only if ΔG is n ...
(C) When silver oxide decomposes, the oxidation states of the silver and the oxygen change from +1 to 0 and from −2 to 0, respe ...
(B) Since the mass of the silver oxide (4.64 g), the mass of the oxygen released upon heating (0.32 g), and the mass of the sil ...
(A) The mass of oxygen released from the silver oxide can be converted into moles by using dimensional analysis. Because the n ...
(E) The purpose of the second heating is to ensure that all of the oxygen is removed from the silver oxide. Since the mass afte ...
(D) A splint of wood with an ember placed into a container where oxygen may have been produced offers evidence of the productio ...
(A) The phenomenon is the formation of the white ring, which is NH 4 Cl. Although the distance traveled by each gas could be m ...
(C) Since Ca2+ and HSO 4 − combine, the formula is Ca(HSO 4 ) 2. ...
(C) NaOH is 40 g/mol. 40 g in 1 L makes a 1 M solution. ...
(C) A saturated solution represents a condition where the solute is going into solution as rapidly as some solute is coming out ...
(D) II and III are correct since the double-bonded carbons in the alkene and the triple-bonded carbons in the alkyne series hav ...
(B) The thistle tube is not below the level of the liquid in the generator and the gas would escape into the air. (Vinegar is a ...
(D) NH 3 is very soluble and could not be collected in this manner. All others are not sufficiently soluble to hamper this met ...
(C) The formula (mass) is the total of (Ca =) 40 + (2N =) 28 + (6O =) 96, or Since oxygen is 96 amu of 164 total, the percen ...
(D) The Keq expression consists of the concentration(s) of the products over those of the reactants, with the coefficients bec ...
62. (A) ...
(C) In dilution problems, the expressions M 1 × V 1 = M 2 × V 2 can be used. Substituting (6.0 M) (0.50 L) = (2.0 M) (x L) giv ...
(C) The reaction equation and information given can be set up like this: Studying this shows that the limiting element will be ...
(E) The functional group of an ester is ...
(C) The thistle tube serves both these purposes. ...
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