Calorimetry Quiz

If two objects have different temperatures when they come in contact, heat will flow from the warmer object to the cooler one UNTIL ____________

One reaches a temperature of zero

They both have an equal temperature

One runs out of energy

If 980. J of energy is added to 6.20 g of water at 18.0 °C, what is the final temperature of the water? (The specific heat of water is 4.18 J/g°C.)

37.8 °C

-19.8 °C

19.8 °C

55.8 °C

There are four cups of hot cocoa. The cup sizes are shown. The temperature of the cocoa in each cup is 25 degrees celsius. Which cup has the MOST thermal energy?

Large cup (Trenta)

Small cup (Tall)

Venti

All three are the same temperature so they have same thermal energy

Which of the following process is exothermic?

Water freezing to form ice

A puddle evaporating

Candle was melting

Dry ice (solid carbon dioxide) subliming to form gaseous carbon dioxide

ΔH value in an endothermic reaction is a positive number.

True

False

If a chemical reaction is EXOTHERMIC, the temperature would....

Stay the same

Increase

Decrease

Calorimetry Quiz

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