What is the mass in grams of 4.63 mol of C8H18?

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?

Rank the compounds below from slowest to fastest rate of hydration. 1) formaldehyde 2) 3,3-dimethyibutan-2-one 3) propanal 4)3-methylbutan-2-one 5) butan-2-one

Concentrated aqueous nitric acid is 70.4 wt% hno3 and has a concentration of 15.9 m. calculate the volume of concentrated nitric acid that should be diluted to 1.80 l to form a 5.00 m hno3 solution.