Calculate the energy change (in kJ) associated with the conversion of 25.0 grams of ice at -4.00 °C to water at 100.0 °C. The specific heats of ice
, water
, and steam are 2.09 J/g-C, 4.18 J/8-C
and 1.84.1/8-C, respectively
. For H20, AH-us=6.01 kJ/mol and AHvap=40.67 kJ/mol
.

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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you need to have a picture of the atom that way we can answer it