This man is using a block and tackle to lift a heavy bale of cotton. the block and tackle contains which simple machine?
1 answer:
You might be interested in
The volume of the balloon when the mass of oxygen gas is decreased to 50g is 50L.
We will use the ideal gas equation-
<u>PV=nRT</u>
P=Pressure
V=volume
n=no. of moles
T=temperature
In this question temperature and pressure will remains constant then the above equation can be rewritten as-
where V1= initial volume of the balloon
V2= volume of the balloon when the mass of oxygen gas is decreased to 50g
now, substitute the values in the above equation-
- V1=100dm3=100L
- n1=100/32=3.12
- n2=50/32=1.56
100/3.12=V2/1.56
- V2=50 L
hence, the volume of the balloon when the mass of oxygen gas is decreased to 50g is 50L.
learn more about the ideal gas equation here:
#SPJ10
Mass of Hydrogen gas required to react : 0.936 g
<h3>Further explanation</h3>Reaction on Nitrogen gas and Hydrogen gas to produce Ammonia gas
N₂ (g) + 3 H₂ (g) ⇒ 2 NH₃ (g)
Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol
so mol Nitrogen for 3.5 L at STP :
From the equation, mol ratio of N₂ : H₂ = 1 : 3, so mol H₂ :
then mass of Hydrogen(MW= 2 g/mol) :