just answers please, no need to show steps!

What is the internal energy change for the system if 731 joules of heat flows into the system from the surroundings and 617 joules of work is done on the system by the surroundings? Enter an integer, with a " + "or "-" sign as appropriate. Don't forget to include an appropriate SI abbreviation for the units. What is w when 3.17kg of H2O(l), initially at 25.0C, is converted into water vapour at 169C against a constant external pressure of 1.00atm ? Assume that the vapour behaves ideally and that the density of liquid water is 1.00g/mL. (Remember to include a "+" or "-" sign as appropriate.) Enter your answer in acceptable SI units, accurate to 3 significant figures. Use an acceptable SI symbol for units. Question 3 What is w when the volume of a gas expands from 24.7L to 29.2L against a constant external pressure of 801 Torr? Remember to include a " + " or "-" sign as appropriate. 1 point Units Help Note: 760 Torr =1atm=1.01325bar=101.325kPa Enter your answer in acceptable SI units, accurate to 3 significant figures. Use an acceptable SI symbol for units