In the equation \({E_h} = cm\Delta t\), what does c represent?
The mass of liquid
The specific heat capacity
The change in temperature
What are the products of combustion reactions when hydrocarbons are burned in a plentiful supply of oxygen?
Carbon dioxide and water
Carbon monoxide and water
Carbon (soot) and water
Which equation shows the correctly balanced equation for the combustion of pentane?
\[{C_5}{H_{12}} + 3{O_2} \to 5C{O_2} + 12{H_2}O\]
\[{C_5}{H_{12}} + {O_2} \to C{O_2} + {H_2}O\]
\[{C_5}{H_{12}} + 8{O_2} \to 5C{O_2} + 6{H_2}O\]
If one mole of propane is burned, how many moles of water will be produced?
One
Two
Four
If 48 grams of methane (formula mass 16 g) is burned, what mass of carbon dioxide (formula mass 44 g) will be produced?
132 grams
88 grams
44 grams
When a sample of methane was burned, the heat produced raised the temperature of 100 cm3 of water from 20.2°C to 29.3°C.
Calculate the heat energy released by this reaction.
0.38 kJ
3.8 kJ
3803 kJ
A sample of methanol was burned, and the heat used to warm 100cm3 of water.
7.106 kJ of heat energy was produced by the reaction.
What will be the temperature increase in the water?
15˚C
17˚C
19˚C
Methanol was burned in a spirit burner and raised the temperature of 800cm3 of water from 20˚C to 85˚C.
Use these values to calculate how much heat energy was released?
2.17 kJ
21.73 kJ
217.36 kJ
What is the temperature increase when butane is burned, releasing 125.4 kJ of heat energy that is used to heat 1500cm3 of water?
20˚C
25˚C
30˚C
In an experiment, propan-1-ol was burned, releasing 6.688kJ of heat energy. The heat released was used to heat 200 cm3 of water which was initially 23˚C. What was the temperature of the water after the experiment?
8˚C
31˚C