Chemistry, 05.01.2020 11:31 LuluMathLover101
How much heat does it take to melt 2.5 kg of lead when it is at its melting point (m. p. = 327.5°c; hf = 2.04 × 104 j/kg)?
6.2 × 10^1 j
8.2 × 103 j
5.1 × 10^4 j
1.7 × 10^7 j
it takes 2.52 × 10^5 j of heat to melt 4.00 kg of a substance. according to the table, what is the substance?
copper
iron
silver
gold
which of the following would you use to calculate the heat released when a liquid freezes?
heat of fuheat of vaporization
heat of condensation
heat of solidification
how much heat is required to completely boil away 0.200 kg of water (hv = 2.26 × 103 kj/kg)?
4.52 × 10^2 kj
2.26 × 10^3 kj
4.52 × 10^3 kj
1.13 × 10^4 kj
Answers: 2
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