A35.6 g sample of ethanol (c 2h 5oh) is burned in a bomb calorimeter, according to the following reaction. if the temperature rose from 35.0 to 76.0°c and the heat capacity of the calorimeter is 23.3 kj/°c, what is the value of dh° rxn? the molar mass of ethanol is 46.07 g/mol.
c2h5oh(l) + o2(g) → co2(g) + h2o(g) δh°rxn = ?

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots