5. Which of the following would BEST indicate an exothermic reaction is taking place? a. The ice melts
b. Bubbles appear
c. A sweet odor or smell is produced
d. The temperature of the mixture rises 14 degrees in two minutes

Base your answer on the information below and on your knowledge of chemistry. nitrogen dioxide, no2, is a dark brown gas that is used to make nitric acid and to bleach flour. nitrogen dioxide has a boiling point of 294 k at 101.3 kpa. in a rigid cylinder with a movable piston, nitrogen dioxide can be in equilibrium with colorless dinitrogen tetroxide, n2o4. this equilibrium is represented by the equation below. 2no2(g) n2o4(g) + 58kj at standard pressure, compare the strength of intermolecular forces in no2(g) to the strength of intermolecular forces in n2(g).

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

In which phase(s) do the molecules take the shape of the container?