utons) 27. Calculate q when 28.6 g of water is heated from 22.0°C to 78.3°C. A)
ID: 102904 • Letter: U
Question
utons) 27. Calculate q when 28.6 g of water is heated from 22.0°C to 78.3°C. A) 0.385 k B) 1.61 kJ C) 9.37 kJ D) 6.74 kJ E) 1.61 × 103 kJ 28. In the moderm periodic table, the order in which the elements are placed is based on A) atomic mass. B) atomic size C) mass number. D) chemical reactivity atomic number. 29. A system delivers 225 J of heat to the surroundings while delivering 645 J of work. Calculate the change in the internal energy, AE, of the system. A) 870 J B) 420J C)-870J D)-420 J Final Exam, CHE 129 Fall 2016, Version A, 47 Questions, Page 9
Explanation / Answer
We know that,
Change in Internal Engergy = Heat - Work Done
= (225-645)J
= -420J
So therefore option D is correct.
Please do "Like" my answer if it was helpful to you
Thank You
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.