How much heat is needed to raise the temperature of 50 g of water by 10 degrees Celsius? (specific heat 4.18 J/g per degree Celsius)
Answer and explanation
Correct answer: D. 2,090 J
- Step 1: q = m x c x delta T. Step 2. 50 x 4.18 x 10 = 2,090 J. Answer: 2,090 J. Why not the others: In water and typical oxides, oxygen has an oxidation state of -2; in elemental oxygen gas (O2) it has an oxidation state of 0; and -1 occurs only in peroxides.
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