1. A certain metal (specific heat= 0.18 cal / g-C weighing 8.5 grams and whose temperature is 8.5 grams and whose temperature is 82 C is mixed with 45 grams of water

(specific heat=1.00 cal/g-C at 22 C) CALCULATE THE FINAL TEMPERATURE (C) of the mixture..

2. A gas occupies a volume of 300 cm^3 at STP. Calculate its volume (ml) at 650 mmhg and 25C.

3. calculate the weight (g) of carbon monoxide gas that occupies a volume of 1500ml at 135 atm and at -190C.

please show and indicate how to solve this problem.