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elena-14-01-66 [18.8K]
3 years ago
14

How many significant figures are there in 500 and 101.00?

Chemistry
1 answer:
Rashid [163]3 years ago
6 0

Answer:1 and 5

Explanation:

The zeros in 500 aren’t in the middle of 2 non number nor does it have a decimal in the number

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a 22.44g sample of iron absorbs 180.8 J of heat, upon which the temperature of the sample increases from 21.1C to 39.0/ what is
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Answer:

The specific heat of iron is 0.45 J/g.°C

Explanation:

The amount of heat absorbed by the metal is given by:

heat = m x Sh x ΔT

From the data, we have:

heat = 180.8 J

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ΔT = Final temperature - Initial temperature = 39.0°C - 21.1 °C = 17.9°C

Thus, we calculate the specific heat of iron (Sh) as follows:

Sh = heat/(m x ΔT)  = (180.8 J)/(22.44 g x 17.9°C) = 0.45 J/g.°C

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