1. The solid fuel in the booster stage of the space shuttle is a mixture of ammonium perchlorate and aluminum powder. On ignition, the reaction that takes place is
NH, CIO4(s) + Al(s) - Al, O3(s) + N2(g) + HCIO + H2,00)

a. Balance the equation.

b. What mass in grams of aluminum solid is required to react with 2314 g of NH, CIO, for this
reaction?

C. What mass of AI, O, (alumina, a finely divided white powder that is produced as billows of white
smoke) is formed in the reaction of 3.2 x 109 g of aluminum?

The last few miles of the marathon are the most difficult for heather, her hair plastered to her head, sweat clinging to her arms, and her legs already feeling as if they had nothing left, just dead weight. after grabbing a cup of ice water, she feels the ice cubes smash against her nose as she gulps some cool refreshment and keeps on running. in these last few miles, the breeze kicks up and she finally feels some coolness against her skin. drips of sweat, once clinging to her forehead, now spill down, and heather feels more pain as the sweat flows into her eyes.which of the following is the most likely reason why the ice struck heather’s nose when she took a drink? a) water can function as a solvent. b) water can store large amounts of heat. c) water can moderate temperatures through evaporative cooling. d) the density of water decreases when it freezes. e) water has a cohesive nature.sweat remained on heather’s forehead and arms because of the a) high salt content of sweat b) cohesive nature of water c) ability of water to moderate heat d) high evaporative cooling effect of water e) ability of water to act as a solvent

Salt in oceans comes from and of rocks

What element has similar physical and chemical properties as boron.