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SVETLANKA909090 [29]
2 years ago
11

Corrections here: 1. When calcium reacts with water, the temperature changes from 18c to 39c

Chemistry
1 answer:
Ugo [173]2 years ago
3 0

When calcium reacts with water, the temperature changes from 18c to 39c is an exothermic reaction as energy is releasing and increasing the temperature.

<h3>What is an exothermic reaction?</h3>

Exothermic reaction are those reactions in which energy is released when a reaction completes.

An example is burning of wood.

Thus, when calcium reacts with water, the temperature changes from 18c to 39c is an exothermic reaction as energy is releasing and increasing the temperature.

Learn more about exothermic reaction

brainly.com/question/10373907

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Antoine Lavoisier burned metals in sealed jars. What is your prediction of his experimental results?
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The mass of the jar and contents remained the same after the metal was burned.

Explanation:

My prediction about the experimental results is that  the mass of the jar and contents remained the same after the metal was burned in the jar.

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3 years ago
A student placed 18.5 g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then
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Answer:

1.30464 grams of glucose was present in 100.0 mL of final solution.

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Molarity of the solution = \frac{0.1028 mol}{0.1 L}=1.028 mol/L

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Molarity of the solution after dilution = M_2

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