Water Problems

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

• 10 °C
• 5 °C
• 15 °C
• 25 °C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If I heat up 2 pans of water one has 100 mL in it and one has 1000mL. Which one heats up the fastest?

• 100 mL
• 1000 mL
• They both heat up at the same speed
• They cool down.

Tags

NGSS.HS-PS3-4

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

• 200 J

• 400 J

• 33,400 J

• 2,000,000 J

Calculate the amount of energy required to melt 35.0 grams of ice. H_f = 336 J/g, H_v = 2260 J/g, C = 4.18 J/g ºC

• 19,600 J

• 35.0 J

• 11,690 J

• 1,568,000 J

If a 8.50g ice cube at -10^o C sits out on the counter, completely melts, and then warms to room temperature (25^o C) how much energy did the ice cube absorb? Use C = 2.108 J/g^oC for ice, C = 4.184 J/g^oC for water, and H_f = 334 J/g.

• 179.18 J
• 2839 J
• 889.1 J
• 3907.3 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

How much energy is required to completely boil away 150g of 10^o C water? Use C = 4.184 J/g^oC for water, and H_v = 2260 J/g.

• 56,484 J
• 339,000 J
• 395,484 J
• 385,484 J

Tags

NGSS.HS-PS3-1

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

• Q=mc∆t

• Q=mH

• Q= ½mv

• m=QC

Calculate the energy needed to completely boil away 30 g of water at 100 ⁰C .

• 67,800 J

• 2260 J

• 226,000 J

• 100 J

Tags

NGSS.HS-PS3-4

How many Joules of energy are required to make 100 grams of ice at 0 ^οC completely melt?

• 200 J

• 400 J

• 33,400 J

• 2,000,000 J

Tags

NGSS.HS-PS3-1

The symbol for specific heat is .......

• c
• Q
• m
• t