What is the general term for a substance dissolved in water? Acid salt aqueous s

Question

What is the general term for a substance dissolved in water? Acid salt aqueous salt aqueous solution salt solution The compound CH_3CH_2NH_2 is classified as a primary amine secondary amine tertiary amine alkaloid Given the following information, what is the percent of water in an unknown hydrate? Mass of beaker and hydrate 96.620 g Mass of beaker 95.063 g Mass of beaker + anhydrous compound 95.975 g 2.41% 14.7% 40% 70.7% What kinds of interactions is NOT part of tertiary protein structure? Salt bridges disulfide bonds hydrophilic interactions peptide bonds As the number of moles per liter of a reactant in a chemical reaction increases, the number of collisions between the reacting particles decreases increases remains constant undetermined, since more information is needed What is the actual yield of a sodium carbonate given the following date? Mass of the test tube=18.2000g Mass of the test tube + NaHCO_3 (before heating)=19.715 g Mass of the test tube + Na_2CO_3 (after heating)=19.202 g 0.489 g 0.513 g 1.002 g 1.515 g

Explanation / Answer

14. c aqueous solution

15. a primary amine

16. c 40%

Mass of beaker and hydrate - mass of beaker = 96.620 - 95.063 = 1.557 = mass of hydrate

mass of beaker + anhydrous compound - mass of beaker = 95.975 - 95.063 = 0.912 = mass of anhydrous compound

mass of water = 1.557-0.912 = 0.645g

percent of water = (0.645 / 1.557) * 100 = 40%

17. a salt bridges

18. b increases

19. c 1.002g

Mass of sodium carbonate - Mass of test tube = 19.202 - 18.2 = 1.002 g

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