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dezoksy [38]
3 years ago
11

What is the specific heat capacity of a metal if it requires 177.5 J to change the temperatures of 15.0g of the metal from 25.00

degree celcius to 34 degree celcius
Chemistry
1 answer:
Vikentia [17]3 years ago
3 0

Answer:

The specific heat capacity of a metal is 1.31 J/g°C = C

Explanation:

A classical excersise of calorimetry to apply this formula:

Q = m . C . ΔT

177.5 J = 15 g . C (34°C - 25°C)

177.5 J = 15g . 9°C . C

177.5 J /15g . 9°C = C

1.31 J/g°C = C

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How much energy is needed to change 44 grams of ice at -8° to steam at 107°?
Tpy6a [65]
Q=m(c∆t +heat of fusion + heat of evaporation)

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5 0
3 years ago
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Nezavi [6.7K]

Answer:

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5 0
3 years ago
12. What is the frequency of a photon with an energy of 3.03 x 10-19 J?
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Answer:

u=4.57x10^5GHz

Explanation:

Hello.

In this case, given the formula:

E=h*u

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Best regards.

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