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Reil [10]
3 years ago
10

Potassium atomic number a) 27 b) 67 c) 19

Chemistry
1 answer:
BlackZzzverrR [31]3 years ago
6 0

Answer:

C

Explanation:

19 is the answer, because it is the atomic number of potassium. Hope it helps!

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How much energy (joules) is needed to heat 250 grams of copper from 22 °C to 99 °C? The specific heat capacity (C) of copper is
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Answer:

7430.5 Joules (7.4*10^4 Joules)

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plugging the values in gives

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