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
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