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krok68 [10]
4 years ago
13

Exam #1 On Scientific Method

Chemistry
1 answer:
professor190 [17]4 years ago
8 0

Answer:

hhvghhvghh

Explanation:

ghhhjjjnjj

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a scientist determined that an unknown element didn't react with anything. The element most likely belongs to:
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How many milliliters of a 6.00 M NaCl solution are needed to make 250.0 milliliters of a 0.500 M NaCl solution?​
kenny6666 [7]

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4 0
3 years ago
An endothermic solution process is described by which of the following?
Temka [501]

Answer:

a. ΔΗ > 0, solution feels cold

Explanation:

Hello,

In this case, endothermic process are those in which we can find that the products have more energy than the reactants, therefore energy is absorbed, for which the following equation:

\Delta H=\Delta H_{products}-\Delta H_{reactants}

Must be greater than 0 (positive) thereby, for a solution process we find that the solution feels cold, in such a way, answer is a. ΔΗ > 0, solution feels cold.

Regards.

4 0
3 years ago
Which of the following help a chemical reaction to happen faster? Molecule ,Atom, Density , Catalyst
Gemiola [76]

Answer:

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Explanation:

5 0
2 years ago
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