Sample Ram
A sample of H2O with a mass of 46.0 grams has a temperature of -58.0(degrees)C.....?
1.) A sample of H2O with a mass of 46.0 grams has a temperature of -58.0(degrees)C..... How many joules of energy are necessary to melt 46.0 rams of ice?(using 2.1 j/g(degrees)C for the specific heat of ice, and 334.4 j/g for the heat of fusion of water.)
2.)A sample of H2O with a mass of 46.0 grams has a temperature of -58.0(degrees)C. How many joules of energy are necessary to heat the steam from 100.0(degrees)C to 114.0(degrees)C if the secific heat of steam is 2.01 j/g(degrees)C?
3.) How much energy is needed to melt 25.4 grams of I2?(Hfus=61.7 j/g)
4.) How much heat is needed to raise the temperature of 5.58 kilograms of iron from 20.0(degrees)C to 1000.0(degrees)C? Specific eat of iron is 450,000 J/kg.
ALL CONVERTED IN JOULES
Q = 46.0 x 2.1 ( 58)=5603 J
Q = 46.0 x 334.4 = 15382 J
total energy required = 20985 J
Q = 46.0 x 2.01 ( 114 - 100)=1294 J
Q = 25.4 x 61.7 = 1567 J
Q = 5.58 x 450,000 x ( 980)= 2.46 x 10^9 J
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