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What is the pH of solution that has [ OH-] of 5 x 10-3 ?

A sample of gas contains four gases with the following partial pressures: He (113 mm Hg), Ne (184 mm Hg), Ar (35 mm Hg), and Xe (445 mm Hg). What is the total pressure of the sample in mm Hg?

Which of the following is NOT a reasonable assumption about the chemical reaction whose energy diagram is depicted below?   

A solution is made by mixing 569 mL of water and 238 mL ethanol. What is the concentration of ethanol in units of volume/volume percent?

Which substance is a nonelectrolyte?

What is the conjugate acid of NH2−?

Which sample contains the largest number of molecules?

Which substance is a colloid?

II. Fill in with UN, UNE, DES. Only use lower case letters. 25 POINTS   [1] table [2] acteur [3] université [4] faculté [5] bureaux [6] objet [7] étudiante [8] différences [9] chanteuse [10] actrices

IV. Fill in the translations below with the correct French word. 40 POINTS   ô  é  è  ê  ë  à  â  ç  ï  î  ù  û  û  œ   How old are you ? = [1] [2] [3]-tu ?       I am 21 years old. = J’ [4] vingt et un [5]. This is a board. = C’ [6] un [7]. These are computers. = Ce [8] des [9]. What is this ? = Qu’ [10]-ce [11] c’ [12] ? There is a boy in the bookstore. = Il [13] a un [14] dans [15] [16]. There are a lot of tables in the library. = Il [17] a beaucoup de tables dans [18] [19]. How many girls are there in the French class ? = Il [20] a [21] de [22] dans la classe de français ?       There aren’t any girls in the French class. = Il n’[23] a pas [24] [25] dans la classe de français.