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Tanzania [10]
4 years ago
7

Vincent combines sodium and chlorine in two different beakers (beaker X and beaker Y). In both beakers, the chemical reaction sh

own below occurs. If beaker X is kept at room temperature and beaker Y is placed in a refrigerator, then A. the chemical change will occur faster in beaker X. B. the chemical reaction will reverse its direction in beaker Y. C. the chemical reaction will reverse its direction in beaker X. D. the chemical change will occur faster in beaker Y.
Chemistry
2 answers:
Elza [17]4 years ago
8 0

Answer: A. the chemical change will occur faster in beaker X.

Explanation:

Temperature is one of the factors that affect the rates of chemical reactions. Increase in temperature increases the rates of reaction by increasing the kinetic energy of the reacting particles so that energetic collisions occur and more bonds in the reactants will be broken and; atoms and ions recombine to form new compounds. Beaker X which is at room temperature has higher temperature than beaker Y which is kept in the refrigerator, thus reacting particles in beaker X has more kinetic energy than the ones in beakerA. the chemical change will occur faster in beaker X. Y.

Kay [80]4 years ago
5 0

Answer:

A) chemical change                  

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Please help! What is the molarity of 450 mL of solution containing 15 g NaCl?
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Answer:

The answer to your question is 0.6 M

Explanation:

Data

Molarity = ?

Volume = 450 ml

mass of NaCl = 15 g

Process

1.- Calculate the molar mass of NaCl

NaCl = 23 + 35.5 = 58.5 g

2.- Calculate the number of moles of NaCl

             58.5 g of NaCl ------------ 1mol

                 15 g of NaCl ------------   x

                         x = (15 x 1)/58.5

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3.- Calculate the molarity

Molarity = moles/volume

-Substitutiion

Molarity = 0.26/0.45l

-Result

Molarity = 0.6 M

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