Consider the following thermochemical equation:
2ch3oh(l) + 3o2(g) → 2co2(g) + 4h2o(g) ∆horxn = –1277 kj
what mass of water can be heated from 23.5°c to 88.2°c with the heat that is released from the combustion of 12.0 g of ch3oh (molar mass = 32.0 g/mol), assuming no heat is lost to the surroundings? specific heat capacity of h2o = 4.184 j/g°c.

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Agas initially at p1 = 1 bar and occupying a volume of 0.5 liter is compressed within a piston–cylinder assembly to a final pressure p2 = 4 bar. (a) if the relationship between pressure and volume during the compression is pv = constant, determine the volume, in liters, at a pressure of 3 bar. (b) repeat for a linear pressure–volume relationship between the same end states. reference