Please help! An engineering team designs a rocket that flies faster and requires less fuel than other rockets. However, the rocket explodes the first time it is launched. Which step of the engineering process would have shown that there was a potential problem?

A.

Evaluate the results.

B.

Make a plan.

C.

Know the background.

D.

Do the work.

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

Which element would mostly likely have an electron affinity measuring closest to zero

How many grams of ammonia would be produced by the decomposition of 16.93 mlof hydrazine? (the density of hydrazine is 1.021g/ml)