Answer:
45.5 grams and AB=1.1547, AC = 2.3094
Step-by-step explanation:
The first question requires converting grams to moles, and finding the (molar) ratio that the reactants react. There are 31.9 grams of silver nitrate, which equals 31.9/169.87 moles, or 0.188 moles. Silver nitrate reacts with an excess of iron chloride to produce 0.188 moles of iron nitrate. 0.188 moles of iron nitrate, or 241.86*0.188 grams. 241.86*0.188 grams is also equal to about 45.5 grams. There is a chance that i have the wrong molar masses, so try to do it yourself too.
For the second problem, this is a 30 60 90 triangle, which has the property that the hypotenuse is twice the length of the smallest leg, and 2/3*sqrt3 the size of the medium length leg. In this case, the triangle isn't drawn to scale at all, so don't go off the provided picture to determine lengths. AC is 2/3*sqrt3 times the length of BC, or
, or about 2.3094. Since the shortest leg is half the length of AC, the hypotenuse, AB would be 2.3094/2, or 1.1547. Make sure to round to what the question requires.