Barrons SAT Subject Test Chemistry, 13th Edition

(C) Standard conditions are 273 K and 760 mm Hg. ...

(A) Dividing the percentage value, expressed in grams, by the molar mass of each element in a compound and then comparing those ...

(B) The percentage composition can be found by dividing each total atomic mass in the formula by the molar mass of the compound ...

(A) The balanced equation shows that 1 mole of zinc requires 2 moles of hydrochloric acid to completely react. The masses provi ...

(C) All the other statements represent observations because they merely record what was seen. ...

(E) The setup is appropriate for the collection of a nonsoluble gas by the displacement of water. All three gases fit this desc ...

(C) With the emission of a neutron, the mass number decreases by 1. However, the number of protons in the missing product is 2. ...

(A) The small Ka indicates that this is a weak acid, so statement III is false. When HCN ionizes, it can be shown that HCN H+ ...

(B) Because the equation shows that 2 mol of NO react to release 150 kJ, the solution is This answer needs to be estimated as ...

(A) In the Brønsted-Lowry acid-base theory, acids donate protons to bases to turn into their conjugates; therefore, acids have ...

(B) According to Graham’s Law, the rates of effusion of two gases are inversely proportional to the square roots of their molar ...

(A) The structure of SO 2 is a resonance hybrid, shown as these resonance structures: ...

(E) The Kw of water is and pH = − log [H+] = 10 ...

52. 0.0100 mol HCl → 0.0100 mol H+ + 0.0100 mol Cl− If [H+] = 0.0100 = 1.00 × 10−2 mol/L, then pH = 2.00 ...

53. (B) This value is easily estimated as “a little” less than 40% because 100 divided by 250 is 0.40 (or ). Remember that no ca ...

(E) Because metallic oxides are basic anhydrides, the only oxide that can form an acid is SO 3. The reaction is as follows SO ...

(B) In the titration, the reaction is: 2HCl + Ca(OH) 2 → CaCl 2 + 2H 2 O The acid to base ratio is 2 : 1, or (moles acid used) ...

(D) All the reactions are spontaneous except (D), which will not occur because copper is a less active metal than hydrogen. ...

(D) Sodium hydroxide is hygroscopic and will attract water to its surface. This water will influence its mass; consequently the ...

58. (C) ...