Mol = mass/ molar mass
So look up the molar mass of nitrogen on your periodic table, which is 14
But REMEMBER it's asking for nitrogen gas which is N2
So, molar mass= 2*14= 28 g/mol
mol= (14g)/ (28 g/mol)= 0.5 mol
So now you got your number of moles
at STP mol= volume/ 22.4 dm^3
so (0.5)(22.4)= 11.2 dm^3 which is 11.2 L
yo, just memorize them mole formulas and you'll be good fam-- just make sure to pay attention to STP or SATP, and if they're asking for "gas" or just the atom!
Missing in your question :
Concentration by (M):
Xy: y: X
initial 0.2 0.3 0.3
change +X -X -X
equilibrim (0.2+x) (0.3-x) (0.3-x)
according to Kc formula: when Kc = 0.2
Kc = [XY]/[X]*[Y]
0.2 = (0.2+x) / (0.3-x)*(0.3-x)
0.2=(0.2+x) / (0.3-x)^2 by solving this equation
0.2*(0.3-x)^2 = 0.2+x
0.2* (0.09-0.6x+x^2)= 0.2 +x
0.0018 - 0.12 X +0.2X^2 = 0.2 + X
0.2X^2 -1.12 X -0.1982 = 0
∴X= 0.17
∴[XY] = 0.2 + 0.17 = 0.37 m
∴[X] = 0.3 - 0.17 =0.13 m
∴[y] = 0.3 - 0.17 = 0.13 m
Answer:
7.36
Explanation:
my teacher said that was the right answer
Answer:
Explanation:
Below are few snaps for explanation.
Answer:
A weak acid will partially dissociate. A strong acid will almost completely dissociate.
Explanation:
This means that the H+ will "fall" off of the molecule and bind to H2O, forming H3O+
The pH will drop regardless, but moreso for a strong acid, as the H3O content rises, also moreso for a strong acid.