Astream of liquid cyclopentane flows at a rate of 0.35 lbm / s into an initially empty container with a volume of 2.0 ft3, placed on a scale calibrated to read weight in lbf. the process takes place at sea level.
when only the empty container was on the scale, the scale reading was 2.50 lbf. estimate the reading 10 seconds after the flow starts.

The combustion of methane, ch4, releases 890.4kj/mol. that is, when one mole of methane is burned,890.4 kj are given off to the surroundings. this meansthat the products have 890.4 kj less than the reactants.thus, ah for the reaction = - 890.4 kj. a negative symbolforah indicates an exothermic reaction.ch (g) + 20 (g)> co2 (g) + 2 h0 (1); ah = - 890.4 kga) how much energy is given off when 2.00 mol of ch,are burned? b) how much energy is released when 22.4g of ch. areburned?