22. Which of the following molecules or ions contain polar bonds? (a) 03
(b) 58
(c)022-
(d)NO3-
(e) CO2
(f) H2S
(g)BH4-

When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8