2Na + 2H₂O → 2NaOH + H₂
2 mol H₂O - 1 mol H₂
0.30 mol H₂O - x mol H₂
x=0.30*1/2= 0.15 mol
Answer:
Explanation:
Using Gay Lusaac's law where there is no change in Volume. The pressure changes directly proportional to absolute T°
P₁/T₁ = P₂/T₂
P₁T₂/T₁
P₂ = 
P₂ =
You can think like this, Velocity is speed with a direction. When you say, the car was moving at the speed of 20 kilometers per hour, that's speed. But if you say, the car was moving at the speed of 20 kilometer per hour to the east. That's velocity, because you also stated the direction of the car.
Mass is the amount of weight something carries. The heavier an object is, the harder it is to stop because the mass of the object(s) has more molecules, so it would be trying to stop more. That is why more force is required for heavier matter.
