How many moles of oxygen are in 8.24 moles Mg(NO3)2

49.4 mol Oxygen

Explanation:

Mg(NO3)2   6 O

1 mol                   6 mol

8.24 mol             x mol

x = 8.24*6/1 = 49.44 mol ≈ 49.4 mol Oxygen

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question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)