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AysviL [449]
3 years ago
10

6. Why does the sun seem to change position in the sky?

Chemistry
1 answer:
Dafna11 [192]3 years ago
4 0
A. Earth’s Rotation
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The mass number of an atom is equal to which of the following?
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the answer is c, the number of protons plus the number of neutrons in a nucleus

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(02.02 MC)
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Mechanical weathering will cause wearing down of rocks.

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4. What is the specific heat of iron, if it requires 1050 J of heat energy to raise the temperature of
Sholpan [36]

Answer:

0.4589J/g°C

Explanation:

Heat energy = 1050J

Mass of iron = 220.0g

Initial temperature (T1) = 10°C

Final temperature (T2) = 20.4°C

Heat energy = mc∇T

Q = mc∇T

Q = heat energy

M = mass of the substance

C = specific heat capacity of the substance

∇T = change in temperature = T2 - T1

Q = m×c×(T2 - T1)

1050 = 220 × c ×(20.4 - 10)

1050 = 220c × (10.4)

1050 = 2288c

c = 1050 / 2288

C = 0.4589J/g°C

The specific heat capacity of iron is 0.4589J/g°C

4 0
3 years ago
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