What is the contour interval on this map?

a.) 25ft

b.) 50ft

c.) 75ft

d.) 100ft

What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?

What does the cell nucleus do or, how does it function?

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)→2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2