7.if the rda for vitamin c is 60. mg per day and there are 70. mg of 'vitamin c per 100.
g of orange, how many 3.0 oz. oranges would you have to eat each week to meet this
requirement?

Which of the following reactions represents an exothermic reaction? nh3(g) + 12.0 kcal ½n2(g) + 3/2 h2(g) ch4 + 2o2 co2 + 2h2o + 212,800 cal c + 2s cs2, h = 27,550 cal c(graphite) c(diamond), h = 0.45 kcal 2h2o 2h2 + o2, h = +58 kcal