Answer: kg= 0.37
Explanation:
Use the molality formula.
M= m/kg
The answer is 0.0171468704904. We assume you are converting between moles Mg(OH)2 and gram. This compound is also known as Magnesium Hydroxide. 1 mole<span> is equal to </span>1 moles<span> Mg(OH)2, or 58.31968 grams.</span>
Explanation:
Al2O3
16=molar mass of one oxygen atom
Number of moles: mass/molar mass
Mol of O3: 19÷(16*3) = 0.40 g/mol
mole ratio
0.40: 3 (oxygen)
0.27: 2 (aluminum)
Mass = molar mass*mole
0.27*(27*3)= 21.87g
200 mg in g:
200 mg / 1000 => 0.2 g
number of moles Al(OH)3 :
molar mass = 78.00 g/mol
1 mole ---------- 78.00 g
? moles -------- 0.2 g
0.2 x 1 / 78.00 => <span> 0.00256 moles of Al(OH)3
number of moles Mg(OH)2 :
molar mass = 58.32 g/mol
1 mole --------- 58.32 g
? moles ------- 0.2 g
0.2 x 1 / 58.32 => </span><span>0.00343 moles of Mg(OH)2
hope this helps!</span>
Answer:
1.95mol
Explanation:
First let us generate the equation for the reaction:
2H2 + O2 —> 2H2O
From the equation,
1mole of O2 reacted to produce 2moles of H2O.
Therefore, Xmol of O2 will react to produce 3.9 mol of H2O i.e
Xmol of O2 = 3.9/2 = 1.95mol