Answer:
B: 2 mol NaOH/2 mol H2O
Explanation:
The reaction equation is;
H2SO4 + 2NaOH = Na2SO4 + 2H20
Now, to know how many moles of NaOH will be produced for 10.5 grams of water (H2O) used, and since the molar mass of H2O is 18.02 g/mol and number of moles attached to H2O and NaOH in the reaction are both 2 we will have;
10.5g H2O × 1 mol H2O/18.02 g H2O × 2 mol NaOH/2 mol H2O
Thus correct answer is option B
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!
Answer:
I dont know the answer for that question it's hard question isn't it