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Dennis_Churaev [7]
3 years ago
11

Which group is the most reactive?

Chemistry
1 answer:
RideAnS [48]3 years ago
8 0

Answer:

alkali metals- Group 1

Explanation:

they have less valence electrons and therefore are more reactive

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3 years ago
Which statement is true for a solution when its concentration of hydroxide ions increases? It becomes more acidic. It becomes le
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Answer:

Its pH value increases.

Explanation:

pH is the measure of alkalinity or acidity of a compound.

pH = - log [H+]

and pH + pOH = 14

where pOH is the measure of basicity of a solution, given by -log[OH-]

As a solution gets more basic that is higher [OH-], the pH increases, and on the other hand, as the pH of a solution decreases by one pH unit, the concentration of H+ increases by ten times.

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3 years ago
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Two solids of identical mass, A and B, are analyzed using identical calorimeters. Each calorimeter contains the same amount of w
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Answer:

Specific heat of solid A is greater than specific heat of solid B.

Explanation:

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Now, we are told that the final temperature of solid A's calorimeter is higher than that of B.

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5 0
2 years ago
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DanielleElmas [232]
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A scientist has a container with a substance inside. At first, the molecules in the substance move away from each other. Later,
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Answer:

Base on the properties the substances possess the substance change phase from gas to liquid.

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Later the molecules move around each other. This is a property of a liquid . A substance in liquid phase have the ability to move freely but they stay together because of the force of attraction holding them together . The substance only have the ability to move around each other because the forces holding them together won't allow them to move apart.

Base on the properties the substances possess the substance change phase from gas to liquid.

5 0
2 years ago
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