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A substance with a mass of 50.0 g has a temperature change of 40.0

degrees when it absorbs 670 J of heat. What is the specific heat of this
substance?

User KevBurnsJr
by
2.7k points

2 Answers

13 votes
13 votes

Answer: The specific heat of a substance with a mass of 50. 0g and a temperature change of 40. 0 degrees whne it absorbs 670 J of heat is 337 J/kg. K

Step-by-step explanation:

Specific heat of a substance is said to be the energy required for an increase in temperature by 1°C in the unit of J/Kg. K

Formula of Specific heat:

Q = mcΔθ

Q represents the quantity of heat

m represents the mass of the substance in Kilograms = 50. 0g÷ 1000 = 0.05kg

c represents the specific heat capacity of the substance = ?

θ represents the temperature change = 40° C

Specific heat, c = Q ÷ mΔθ

= 670 ÷ 0.05 × 40

= 670 ÷ 2

= 335 J/ Kg. K

Therefore, the specific heat of the substance is 335 J/kg. K

User Alan Leuthard
by
3.1k points
15 votes
15 votes

Answer:

Mass=50.0g

H=670J

change in temperature=40

using. c=h÷m×change in temperature

c=670÷50×40

C=670÷2000

C=0.335jkg-1k-1

User Governa
by
2.8k points