PLEASE HELP Assuming that all the energy given off in the reaction goes to heating up only the air in the house, determine the mass of
methane required to heat the air in a house by 15.0°C. Assume each of the following: house dimensions are 30.0 mx
25.0 m x 3.2 m; specific heat capacity of air is 30 J/K mol; 1.00 mol of air occupies 22.4L for all temperatures
concerned.
Express your answer using two significant figures.

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied

answer: gold foil experiment - he shot alpha particles at a gold foil

explanation: