Specific Heat Review

The specific heat of platinum is 0.133 J/g°C. How much heat(Q) is released when a 10 g piece of platinum cools from 100°C to 50°C?

• 66.5 J

• 665 J

• 0.0266 J

• 0.665 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

20 g of water. specific heat of water is 4.18 J/g°C. temperature changes from 25° C to 20° C, how much heat energy (Q) moves from the water to the surroundings?

• 418 J

• 209 J

• 83 J

• 4.18 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

The specific heat(c) of copper is 0.39 J/g °C. What is the temperature change(∆t) when 100 Joules of heat(Q) is added to 20 grams?

• 12.82 °C

• 24.12°C

• 1.95 °C

• 5128 °C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

The temperature of an unknown piece of metal with a mass of 30.00 g changes from 25.0 °C to 35.0 °C when the metal absorbs 350.0 J of energy. What is the specific heat of the metal?

• 1.17 J/g°C

• -1.17 J/g°C

• 0.857 J/g°C

• -0.857 J/g°C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron.

• .88 J/g^oC

• 1.22 J/g^oC

• .46 J/g^oC

• .025 J/g^oC

1. What mass of water will change its temperature by 3 ⁰C when 525 J of heat is added to it? The specific heat of water is 4.18J/g^oC.

• 40 g

• 41.87 g

• 211 g

• 12.5 g