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ankoles [38]
3 years ago
9

!!!!!URGENT!!!!!!

Physics
1 answer:
Vadim26 [7]3 years ago
4 0

Answer:

The specific heat of air is 100  J/kg°C.

Explanation:

mass, m = 5 kg

Temperature change, T' - T =  37 °C - 22 °C = 15°C

heat, H = 7500 J

let the specific heat of air is c.  

The formula of heat is

H = m c (T' - T)

7500 = 5 x c x 15

c = 100 J/kg°C

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Each Al^+^3 ion contains three extra protons. Hence, the extra charge on each  Al^+^3 = 3 \times 1.6 \times 10^-^1^9 C

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