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san4es73 [151]
3 years ago
10

Calculate the amount of heat required to raise the temperature of a 65-g sample of water from 32 ∘C to 65 ∘C. (The specific heat

capacity of water is 4.184 J/(g⋅∘C).
Chemistry
2 answers:
dsp733 years ago
8 0

The amount of heat required is 9.0 kJ.

<em>q = mC</em>Δ<em>T </em>

Δ<em>T</em> = <em>T</em>_f – <em>T</em>_i = 65 °C – 32 °C = 33 °C

<em>q</em> = 65 g × 4.184 J·°C⁻¹g⁻¹ × 33 °C = 9000 J = 9.0 kJ

RUDIKE [14]3 years ago
4 0

Answer:

8974.68 J.

Explanation:

  • The amount of heat required to raise the temperature of water sample can be calculated using the formula:

<em>Q = m.C.ΔT</em>, where,

Q is the amount of heat required to raise the temperature of water sample,

m is the mass of water sample <em>(m = 65.0 g)</em>,

C is the specific heat of water (C = 4.184 J/g.°C),

ΔT is the temperature difference (the final temperature - the initial temperature <em>(ΔT = 65.0 - 32.0 = 33.0 °C)</em>.

∴ The amount of heat required to raise the temperature of water sample Q = m.C.ΔT = (65.0 g) (4.184 J/g.°C) (33.0 °C) = 8974.68 J.

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