Question

Frame any two questions to understand the specific heat of the substance.​

Answer 1

Explanation:

➝ Questions to understand Specific Heat capacity,

$\small\mathfrak\red{Question \: no. \: 1}$

A piece of metal at 10°C has a mass of 50gm.

When it is immersed in a current of steam at 100°C, 0.7 gm. of steam is condensed on it. Calculate S.H.C of metal.

$\small\mathfrak\red{Answer \: no.1}$

Heat gained by metal = 50 × C × ( 100 - 10 )

= 50 × C × 90

= 4500 C

Heat lost by steam = 0.7 × 540

= 7 × 54

➜ Heat lost = Heat gained

Therefore,

4500C = 7 × 54

$\huge\:C\:=\:\frac{7 × 54}{4500}$

$\huge\:C\:=\:\frac{42}{500}$

$\huge\:S.P.H\:is \: \frac{42}{500}\:cal/gm$

$\small\mathfrak\red{Question\:no.2}$

650J of heat is required to raise the temp. of 0.25 kg of lead from 15°C to 35°C. Calculate the sp. heat capacity of lead.

$\small\mathfrak\red{Answer\:no.1}$

Let's 's' J/gm °C be the specific heat capacity of lead,

Quantity of heat = m × s × t

ㅤㅤ650 = 250 × s × ( 35 - 15 )

s = 0.13 J/gm°C

$\huge\mathfrak\red{Thanks}$

Answer 2

Questions to understand SPECIFIC HEAT CAPACITY of a substance:

1. 5 grams of water (at 10°C) was added to 15 grams of water (at 85°C). What will be the temperature of the mixture, provided that specific heat capacity of water is 1 cal/g °C ?

2. 10 grams of ice is mixed with 40 grams of water at 50°C. What will be the temperature of the resulting mixture?

3. Equal amounts of heat is provided to same mass of aluminium and mercury. Which metal will show higher rise in temperature? Specific heat capacity of aluminium is 900 J/kg °C , mercury is 140 J/kg °C.

4. Does specific heat of a substance change upon changing the mass of the substance? Justify.

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