The enthalpy of formation of c2h5oh ,co2 and h2o are -277 ,393 and -285.5 kj/mol calculate the enthaloy change for the reaction c2h5oh + 3o2 = 2co2+3h2o

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397

Answer asap need by wednesday morning calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 best answer will be brainliest