Summary Test 10: Chemical Quantities & Calculations

1.

(a)

Calculate the concentration of a solution if 5 moles of the solute are dissolved to form 10L of

solution.

n = 5 mol v=1OL P=?

If δh°rxn and δs°rxn are both positive values, what drives the spontaneous (favored) reaction and in what direction at standard conditions?

Ethylene glycol, commonly used as automobile antifreeze, has a specific gravity of 1.1088 at room temper- ature. What is the volume of 1.00 kg of ethylene glycol? What is the volume of 2.00 lb of ethylene glycol?

What is the amount of heat needed to raise the temperature of 1kg of that substance by 1 degree Celsius? A. Internal combustion B. Thermal pollution

The atoms and molecules in a liquid are in constant motion. As temperature decreases, what is true of the particles in the liquid?

For each reaction, identify the substance being oxidized and the substance being reduced.? A.) Mg (s) + Br2 (g) →MgBr2 (s) substance being oxidized: substance being reduced: B.

Sedimentation is least likely to occur

Why it is important to learn about elements, compound, and mixture?

Sodium borohydride is stable in acidic aqueous solutions. True or False

Assume at exactly 100.0°c and 1.00 atm total pressure, 1.00 mole of liquid water and 1.00 mole of water vapor occupy 18.80 ml and 30.62 l, respectively.

The time it takes to run a kilometer depends on the amount of exercise a person gets. What is the independent variable? -person running -time to run a kilometer -running -the amount of exercise