13. The Soviet space shuttle is 119 feet ar at the same time the NASA space shuttle is 184 feet tall,
How big is the shadow it casts?

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

1. during first 10 seconds 2. between 10 seconds and 35 seconds 3. during 35 seconds to 40 seconds

Do you mind if you guys me with this question i’m on number 8