A 10.0-gram sample of H2O(2) at 23.0°C absorbs 209 joules of heat. What is the final temperature of the H2O(2) sample? 1.
5.0°C
2
18.0°C
3
28.0°C
4
50.0°c

28℃

Explanation:

So when absorbs 209 joules, the water sample will increase 209/(4200*0.01)=5℃. So the final temperature of sample is 23+5=28℃.

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the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.