Barrons SAT Subject Test Chemistry, 13th Edition

(B) Since 1 mole of any gas at STP has a volume of 22.4 L, then 11.2 L of oxygen contains 0.500 moles of oxygen or 3.01 × 10^2 ...

(B) The molar mass of a gas divided by 22.4 gives the density of any gas at STP because the molar volume of a gas at STP is 22. ...

(B) The balanced reaction between magnesium and oxygen to produce magnesium oxide is 2Mg(s) + O 2 (g) → 2MgO(s) Dimensional an ...

(C) Since the volumes for both reactants were given, this is a limiting- reactant problem. Use dimensional analysis to find the ...

(B) The balanced reaction equation for the combustion of butane is 2C 4 H 10 (g) + 13O 2 (g) → 8CO 2 (g) + 10H 2 O(g) Use dime ...

(A) Use dimensional analysis and mental math: ...

(C) 45.0 g is the actual yield of silver, while 50.0 g is the theoretical yield of silver. Percent yield can be found by ...

7. Liquids, Solids, and Phase Changes 1. (A) Volatile liquids cannot be removed by distillation because they would come over wit ...

(D) In the molar mass of water, there are 2 hydrogen = 2 g and 1 oxygen = 16 g. So the H/O ratio by mass is 2 g/16 g or 1/8. ...

(B) In the balanced reaction, 2H 2 O → 2H 2 (g) + O 2 (g), 2 volumes of hydrogen are released to 1 volume of oxygen, so the ra ...

(C) It takes 334 J to melt 1 g (heat of fusion for 1 gram) so 10 g × 334 J/g = 3,340 J to melt the ice. ...

(C) m (mass) × ΔT (change of temperature) × specific heat = q (quantity of heat). So, 10.0 g × (14° – 4° = 10°) × 4.18 J/°/g = ...

(D) Because hydrogen bonding is so strong in water, it takes more heat energy to reach its boiling point. ...

(B) Metal oxides are basic anhydrides, because they react with water to form acids. Example: CaO + H 2 O → Ca(OH) 2 ...

(B) Saturated means that the solution is holding all the solute it can at that temperature. Dilute means that there is a small ...

(D) Solubility of a solute must give the amount of solute dissolved in a given amount of solvent at a particular temperature. ...

(A) A foam is an example of a colloidal dispersion of a gas in a liquid. ...

(B) This situation describes a saturated solution where an equilibrium exists between the undissolved solute and the solute par ...

(C) A 10.% solution contains 10. g of solute/100. g of solution because the percentage is by mass/100 g of solution. ...

(D) The molar mass is equal to the total of Al = 27 + 3Cl = 106.5 for a total of 133.5 g/mol. ...