Barrons SAT Subject Test Chemistry, 13th Edition

(C) The equation is 2KClO 3 (s) → 2KCl(s) + 3O 2 (g) ...

(A) Since energy is given off in an exothermic reaction, the heat content of the reactants would be higher than the products. ...

(C) Fractional distillation can separate liquids of different boiling points. ...

(B) Oxygen compounds formed in combination reactions are called oxides. ...

(D) Magnesium, which is the most active of the given metals, will react to release hydrogen. ...

(B) Graham’s Law refers to gaseous diffusion or effusion. ...

(A) When confined gases at a constant pressure are heated, they expand. ...

(D) The temperature must be changed to absolute temperature by adding 273 to the Celsius readings. ...

(C) Since the temperature is decreasing, the volume must decrease with the temperature fraction, and, because the pressure is d ...

(A) The level is higher because the pressure inside the tube is less than outside. You must subtract the height inside the tube ...

(A) If water is the liquid, you must divide by 13.6 to change the height to the equivalent height of mercury. ...

(B) The only correct indication of standard conditions is (B). It is usually stated as 273 K and 760 mm Hg. (Note: “mm” and “to ...

(C) Because the vapor pressure of water is a part of the pressure reading, it must be subtracted to get the atmospheric pressur ...

(C) Using the general gas law, PV = nRT, convert 70°C to K by adding 273 = 343 K. Solving for n, you get ...

(C) Boyle’s Law is an inverse relationship. As the pressure increases, the volume decreases, as shown by the graph. ...

(A) Charles’s Law is a direct relationship. As the temperature increases, the volume increases. ...

(A) The relationship of pressure to absolute temperature while the volume is held constant is a direct one. As the temperature ...

(E) The graphs in (E) show the distributions of the kinetic energy of molecules at two different temperatures. ...

6. Stoichiometry (Chemical Calculations) and the Mole Concept 1. (D) The molar mass of a compound is found by adding the masses ...

(A) The molar mass of argon is 39.9 grams. Dimensional analysis shows that 79.8 grams of argon represents 2.00 mol. Since argo ...