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siniylev [52]
3 years ago
12

What does it mean to be an exothermic chemical reaction? a) Energy is released when no new substances are made. b) Energy is rel

eased when new substances are made. c) Energy is absorbed when no new substances are made. d) Energy is absoebed when new substances are made. e) None of the choices are correct.
Chemistry
1 answer:
mario62 [17]3 years ago
3 0

Answer:b

Explanation:

Energy is released to form the product

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Answer:

0.4444 g/cm³ ≅ 0.44 g/cm³ (2 significant figures).

Explanation:

  • Knowing that:

<em>d = m/V,</em>

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m is the mass of the material (m = 28 g).

V is the volume of the material (V = 63.0 cm³).

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Answer:

Q = 1455.12 Joules.

Explanation:

Given the following data;

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dt represents the change in temperature.

dt = T2 - T1

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dt = 37.6°C

Substituting the values into the equation, we have;

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