Please answer asap will give you 30 pts On p 5, Radon gas and its relation to granite like used in kitchen counters is discussed. What advice should one use when hearing about granite or other substances like it? (see last paragraph)

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

Calcium chloride +gold(1) oxide—>

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?