(c) An analysis of the compound, Pb(C2H5)n, showed that 0.026 moles of Pb was combined with 0.104 moles of C2H5 groups.
What is the value of n? Show how you arrived at your answer.
[2]

How many grams are in 68.2 molecules of br2?

Problem page a jet airplane reaches 846. km/h on a certain flight. what distance does it cover in 13.0 min? set the math up. but don't do any of it. just leave your answer as a math expression. also, be sure your answer includes all the correct unit symbols.

State the effect on the concentration of the clo- ion when there is a decrease in the concentration of the oh- ion