Author Question: Calculate the enthalpy change (in kJ) associated with the conversion of 25.0 grams of ice at -4.00 C ... (Read 17 times)

Brittanyd9008 · **on:** Aug 27, 2018

Calculate the enthalpy change (in kJ) associated with the conversion of 25.0 grams of ice at -4.00 C to water vapor at 109.0 C. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively.

For H2O, Hfus = 6.01 kJ/mol and Hvap = 40.67 kJ/mol. A) 64.8
B) 75.9
C) 11100
D) 12000
E) 112

Question 2

What is the molecular formula for heptane?

A) C6H12
B) C6H14
C) C7H14
D) C7H16
E) C7H18