KNO3=40+14+16*3=210 no. of moles=given mass/molarmass. n=m/M= no. of moles=given mass/molar mass =549/210 =2.61
Answer:
Equal volumes of SO2(g) and O2(g) at STP contain the same number of molecules
Explanation:
According to Avogadro Law,
Equal volume of all the gases at same temperature and pressure have equal number of molecules.
This law state that volume and number of moles of gas have direct relation.
When the amount of gas increases its volume will increase and when the amount of gas decreases its volume will decrease.
Mathematical relation:
V ∝ n
V/n = K
K is proportionality constant.
When number of moles change from n₁ to n₂ and volume from V₁ to V₂
expression will be,
V₁/n₁ = K , V₂/n₂ = K
V₁/n₁ = V₂/n₂
I think only the second option is wrong.
Answer:
1 atm
Explanation:
Given:
Atmospheric pressure = 760 torr
Find:
Atmospheric pressure in atm
Computation:
We know that ;
1 torr = 0.00131579atm
So,
760 torr = 760 x 0.00131579atm
760 torr = 1 atm (Approx)
Atmospheric pressure in atm = 1 atm