Barrons SAT Subject Test Chemistry, 13th Edition

(D) Heating molecules increases their kinetic energy. ...

(E) 3Ca + 2P + 8O = 13 atoms. ...

(D) Cesium and fluorine are from the most electropositive and electronegative portions, respectively, of the periodic chart, an ...

(A) Dipole-dipole forces are due to the weak attraction between permanently polar molecules. They are much weaker than the othe ...

(D) The molecular structure of water is that of a polar covalent compound with the hydrogens 105° apart. ...

(C) The most important considerations for a spontaneous reaction are (1) that the reaction is exothermic with a negative ΔH, so ...

(E) Normal H+ acids and OH− bases form water and a salt (not necessarily a soluble salt). ...

(D) Every compound has a charge of 0. H usually has +1, and O usually has −2, so ...

(B) Iron’s oxidation state is changing from +2 to 0. It is the substance being reduced. ...

(E) HCl and H 3 O+ give acid solutions, as does CuSO 4 (the salt of a weak base and a strong acid) when it hydrolyzes in water ...

(C) Mass is a constant and is not dependent on position or surrounding conditions. ...

(C) The complete outer energy levels of electrons of the smallest noble gases have the highest ionization potential. ...

(A) Only NO and NO 2 fit the definition of the Law of Multiple Proportions, in which one substance stays the same and the othe ...

(D) Increasing the concentration of one or both of the reactants and removing some of the product formed would cause the forwar ...

(C) I and II are correct. The equation is 2Na + 2H 2 O → 2NaOH + H 2 (g). The coefficients include a 1 and a 2. ...

(B) 2CO + O 2 → 2CO 2 indicates 2 volumes of CO react with 1 volume of O 2 to form 2 volumes of CO 2. Therefore, 10 L of CO fo ...

(D) H 2 SO 4 + 2NaOH → 2H 2 O + Na 2 SO 4 is the equation for this reaction. 1 mol H 2 SO 4 = 98 g. 1 mol NaOH = 40 g. Then 49 ...

(C) Ksp = [Ag+][Cl−] = 2.0 × 10−10. The molar concentrations of Ag+ and Cl− are 1.4 × 10−5 mol/L, so [Ag+][Cl−] = Ksp [1.4 × 1 ...

(B) If 1.43 g is the mass of 1 L, then the mass of 22.4 L, which is the molar volume of a gas at STP, will give the molar mass ...

(E) The equation is: 2KClO 3 (s) → 2KCl(s) + 3O 2 (g) This shows that 2 mol of KClO 3 yields 3 mol of O 2. Three moles of O 2 ...