Using Q=mcdeltaT

If the specific heat of water is 4.18 J/g∙°C, how much heat is required to increase the temperature of 1,200 g of water from 23.0 °C to 39.0 °C?

• -80.3 J

• 80.3 J

• 80.3 kJ

• -80.3 kJ

A sample of iron receives 50.0J of heat energy that raises the temperature of the iron by 25.0°C. If iron has a specific heat of 0.10 J/g°C, what is the mass of the iron sample?

• 125 g

• 5.00 g

• 20.0 g

• 50.0 g

The specific heat of water is 4.18 J/g°C.

If 980.0 J of energy is added to 6.20 g of water at 18.0 °C, what is the final temperature of the water?

• 37.8 °C

• -19.8 °C

• 19.8 °C

• 55.8 °C

What is the formula to calculate heat energy required to raise the temperature of any substance?

• Q = mc∆T

• Q = mHv

• Q = ½ mv

• m = QHf

The equation for calculating the energy involved in a substance being heated is Q = mCΔT. The correct expression for calculating ΔT is

In heat capacity equations, what does the triangle represent?

• Temperature

• energy

• mass

• change in

• change in temp

How much energy is required to raise 85.36 g of water from 18.5^oC to 60.3^oC? Assume c = 4.18 J/goC

• 21500 J

• 66000 J

• 14900 J

• 85400 J

The temperature of a 6.0 g sample of glass changed from 20.0°C to 45.0°C when it absorbed 550.0 J of heat. What is the specific heat of this glass?

• 0.27 J/g °C

• 3.67 J/g °C

• 130 J/g °C

• 12 J/g °C

Specific heat of water is  4.18 J/g°C. Specific heat of wood is 1.760 J/g°C What material needs more heat energy to raise the temperature?

• Water
• Wood
• Both are same