Which of the relations holds good when no work is done on the system b

1.	Which of the relations holds good when no work is done on the system but X Amt of heat
Answer» F run out and I don't know if I can SEE you tomorrow at school and football and I don't f you r you going to be good to hear from them to me I

Which of the relations holds good when no work is done on the system but X Amt of heat

Answer»

run out and I don't know if I can SEE you tomorrow at school and football and I don't f you r you going to be good to hear from them to me I