Review Thermochemistry Equations

For Water H_f = 6.01 kJ mol^-1 and H_v = 40.14 kJ mol^-1. Find the energy change associated with boiling 10g of water.

• 22.3 kJ

• 401 kJ

• 60.1 kJ

• 3.34 kJ

For Water H_f = 6.01 kJ mol^-1 and H_v = 40.14 kJ mol^-1. Find the energy change associated with freezing 10g of water.

• -60.1

• -3.34 kJ

• 3.34 kJ

• 22.3 kJ

Heat always flows from a __________________ to a cooler object.

• warmer
• cooler
• coolest
• warmest

Tags

NGSS.HS-PS3-4

Calculate the amount of energy required to freeze 98.0 grams of water?

• 32732J

• 146.3J

• 11690J

• 39939.9J

How many joules are required to boil 75 grams of water?

• 25050J

• 169500J

• 31350J

• 10000J

Which equation(s) should you use:

How much energy is required to heat 35.0 grams of H₂O from 10°C to 80°C?

• only Q =mΔH_vap

• only Q =mCΔT

• Q =mCΔT and Q =mΔH_vap

• Q =mCΔT and Q =mΔH_fus

Tags

NGSS.HS-PS3-1

Which equation(s) should you use:

How much energy is required to heat 12.0 grams of H₂O from -15°C to 80°C?

• only Q =mCΔT

• Q =mCΔT and Q =mΔH_fus

• Q =mCΔT and Q =mΔH_vap

• only Q =mΔH_fus

Tags

NGSS.HS-PS3-4