Answer:
I took the test it's C.The volume will increase.
Explanation:
Since the pressure went down from 2 atm to 1 atm, the volume will go up! They are inversely related.
Answer:
The initial pressure was 25.2 Pa.
Explanation:
According to the Gay-Lussac's Law, the pressure of given amount of gas is directly proportional to the temperature in kelvin while volume is kept constant.
Formula:
P₁/T₁ =P₂/T₂
P₁ = Initial pressure
T₁ = Initial temperature
P₂ = Final pressure
T₂ = Final temperature
Given data:
T₁ = 87 K
T₂ = 62.25 K
P₂ = 18 Pa
P₁ = ?
Now we will put the values in formula,
P₁/T₁ = P₂/T₂
P₁ = P₂/T₂×T₁
P₁ = (18 Pa / 62.25 K) × 87 K
P₁ = 0.2892 Pa/k × 87 K
P₁ = 25.2 Pa
The initial pressure was 25.2 Pa.
The transfer of energy that occurs when a force is applied over a distance is WORK.
Hope this helps!
Reaction equation:
Zn + 2HCl → ZnCl₂ + H₂
One mole of gas occupies 22.4 L at STP
Moles of H₂ = 112/22.4
= 5 moles
The theoretical amount of Zn needed is 5 mol
The actual amount = 5/0.85
= 5.88 moles
mass = moles x Mr
mass = 5.88 x 65
mass = 382.2 g
The answer is D.
Answer:
C . A person lifting a weight