204k views
0 votes
What mass of water is needed to raise the temperature by 15 degrees C using 165 Joules of energy

2 Answers

3 votes

The mass of water need to raise the temperature is 2.62 g

Step-by-step explanation:

We have the formula to find the mass

Q = mCΔT

where

Q denotes the energy absorbed or released

m denotes the mass of the sample

C denotes the Specific heat of sample ( 4.186 J/g°C)

Δ T denotes the Temperature change

Q = mCΔT

Rewrite the equation as,

m = Q/ C Δ T

m=165 J/4.186 J/g°C× ( 15.0 °C-0°C)

m= 2.62 g

The mass of water need to raise the temperature is 2.62 g

User Richard Muvirimi
by
8.1k points
3 votes

Mass of the water is 2.63 g.

Step-by-step explanation:

Mass of the water, m = ? g

Temperature, ΔT = 15 °C

Heat absorbed, q = 165 J

Specific heat capacity, c = 4.18 J / g °C

q = m × c × ΔT

Now, we have to find the mass of the water by rewriting the above equation as,

m =
$(q)/(c* dT )

Now Plugin the above values in the equation as,

m =
$(165)/(4.18*15)

= 2.63 g

So the mass of the water is found as 2.63 g.

User Yesennes
by
7.8k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.