Answer:
234.68g
Explanation:
We understood from Avogadro's hypothesis that 1mole of any substance contains 6.02x10^23 atoms. Therefore, 1mole of Fe2O3 also contains 6.02x10^23 atoms
1 mole of Fe2O3 = (56x2) + (16x3) = 112 + 48 = 160g
Now, if 160g of Fe2O3 contains 6.02x10^23 atoms,
Therefore Xg of Fe2O3 will contain 8.83×10^23 atoms i.e
Xg of Fe2O3 = (160x8.83×10^23)/6.02x10^23 = 234.68g
Answer:
atoms of metallic element.
use filtration because sand isn't soluble in water.
Answer:
98.08 g/mol
Explanation:
In order to find the molar mass of a substance, you add together the mass of the total number of moles of each element in the substance.
H2SO4 contains:
2 mol H (1.01 g/mol)
1 mol S (32.06 g/mol)
4 mol O (16.00 g/mol)
2(1.01) + 32.06 + 4(16.00) = 98.09 g/mol
Para encontrar la masa molar de una sustancia, suma la masa del número total de moles de cada elemento de la sustancia.
H2SO4 contiene:
2 mol H (1.01 g/mol)
1 mol S (32.06 g/mol)
4 mol O (16.00 g/mol)
2(1.01) + 32.06 + 4(16.00) = 98.09 g/mol
Answer: mass of SO2 is 160 g
Explanation: according to equation number of moles of SO2
Is same as amount of Oxygen, also 2.5 moles.
Molar mass of SO2 is 32.07 +2·16 = 64.07 g/mol
Mass is m= nM = 2.5 mol· 64.07 g/mol= 160.175 g