Phase Change & Specific Heat

When water is heated from 10°C to 15°C What is the change in temperature?

• 10 °C
• 5 °C
• 15 °C
• 25 °C

How much energy is required to heat up 12000. g of copper from 10.00 °C to 120.00 °C. The specific heat capacity is 0.3900 J/g°C.

• 46800 J

• 561600 J

• 514800 J

Tags

NGSS.HS-PS3-1

How many Joules of energy are required to make 100. grams of ice at 0 ^οC completely melt? The specific latent heat of fusion of ice is 334 J/g

• 200 J

• 400 J

• 33,400 J

• 2,000,000 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

How much energy is needed to raise the temperature of 5.00 grams of lead from 25.0°C to 35.0°C? [specific heat (c) = 0.129 J/(g•°C)]

• 6.45 J/(g•°C)

• 6.45 J

• 16.1 J/(g•°C)

• d.16.1 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

Consider the following temperature-time graph when a solid is heated. which part of the graph involves latent heat of vaporization?

• Part I

• Part II

• Part III

• Part IV

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Calculate the energy needed to completely boil away 30.0 g of water at 100. ⁰C .

• 67,800 J

• 2260 J

• 226,000 J

• 100 J

Calculate the amount of energy required to melt 35 grams of ice. ΔH_f = 80.0 cal/g, ΔH_v = 560.0 cal/g, c = 1.00 cal/gºC

• 19,000 cal

• 35 cal

• 2,800 cal

• 1,600,000 cal

Tags

NGSS.HS-PS3-4

The specific heat of platinum is 0.133 J/g°C. How much heat is released when a 10.0 g piece of platinum cools from 100.0°C to 50.0°C?

• -66.5 J

• -665 J

• -0.0266 J

• -0.665 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4