Chemistry, 19.09.2020 01:01 hailey200127
17. Challenge Express each answer in scientific notation in the units indicated.
a. (1.26 X 104 kg) + (2.5 x 108 g) in kg
b. (7.06 g) + (1.2 x 10-kg) in kg
c. (4.39 x 105 kg) - (2.8 x 107g) in kg
d. (5.36 x 10-kg) – (7.40 x 10-2 kg) in g
Answers: 3
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Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m
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How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next
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17. Challenge Express each answer in scientific notation in the units indicated.
a. (1.26 X 104 kg)...
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