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(106 g MgO / 1) * ( 1 mol MgO / 40.3044 g MgO) = 2.63 mol MgO.
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What is the mass of magnesium oxide when you burn 4 grams of magnesium?
Mg grams -> (use Mg's molar mass) -> Mg moles -> (use ratio of moles - use balanced equation) -> MgO moles -> (use MgO's molar mass) -> grams MgO set up the equation: Mg + O2 --> MgO (we know the product is MgO and not MgO2 because magnesium has a charge of 2+ while oxygen has a charge or 2-) balance the equation: 2Mg + O2 --> 2MgO Molar mass of Mg: 24.31 g/mol Molar mass of MgO: 44.30 g/mol (add the molar mass of Magnesium - 24.31g/mol and the molar mass of Oxygen - 15.99g/mol together) (use periodic table to find these) 7.0 grams of Mg To find the moles of Magnesium you use the molar mass of Mg. (7.0 g Mg)*(1 mol Mg / 24.31 g Mg) =0.2879 moles Mg notice how the grams cancel to leave you with moles - remember dividing by a fraction is the same as multiplying by the reciprocal Now use the balanced equation's coefficients and the moles of Mg to determine the number of moles of MgO present. 2Mg + O2 --> 2MgO 2 moles Mg : 2 moles MgO -> divide both sides by 2 and it obviously becomes a 'one to one' ratio. This means that the number of moles of Mg is equal to the number of moles of MgO. This means that there are 0.2879 moles of MgO. Now that we know MgO's molar mass and the number of moles of MgO we have, the grams of MgO produced can be determined. (0.2879 moles MgO)*(44.30 g MgO / 1 mol MgO) = 12.75 grams MgO
How many mols are in 400g MgO?
The answer is 9,92 moles.
How many grams of magnesium oxide are formed when 14.4 of oxygen gas measured at STP completely reacts with magnesium metal according to this reaction?
2Mg + O2 -> 2MgO1 mole of Oxygen yields two moles of MgOmoles of oxygen = 0.643 molmoles of MgO formed = 1.286 molgrams of MgO formed = 40.3 X 1.286 = 51.8258 g
What is the difference between 2MgO and MgO?
The first corresponds to two moles of magnesium oxide while the latter is one mole of it.
How many moles of magnesium oxide re formed when 4 moles of magnesium react with oxygen this is the formula for the reaction?
The formula for magnesium oxide is MgO, showing that each formula unit of magnesium oxide contains one mole of magnesium ions. Therefore, if there is ample oxygen available, 4 moles of magnesium will form 4 moles of magnesium oxide.
How many moles are in 106 g of MgO?
(106 g MgO / 1) * ( 1 mol MgO / 40.3044 g MgO) = 2.63 mol MgO.
How many moles are there in 160g of MgO?
160 grams MgO (1 mole MgO/40.31 grams) = 3.97 mole magnesium oxide =====================
How many moles of MgO are produced from 11.2 L O2?
The answer is o,5 moles MgO.
What is the mass of magnesium oxide when you burn 4 grams of magnesium?
Mg grams -> (use Mg's molar mass) -> Mg moles -> (use ratio of moles - use balanced equation) -> MgO moles -> (use MgO's molar mass) -> grams MgO set up the equation: Mg + O2 --> MgO (we know the product is MgO and not MgO2 because magnesium has a charge of 2+ while oxygen has a charge or 2-) balance the equation: 2Mg + O2 --> 2MgO Molar mass of Mg: 24.31 g/mol Molar mass of MgO: 44.30 g/mol (add the molar mass of Magnesium - 24.31g/mol and the molar mass of Oxygen - 15.99g/mol together) (use periodic table to find these) 7.0 grams of Mg To find the moles of Magnesium you use the molar mass of Mg. (7.0 g Mg)*(1 mol Mg / 24.31 g Mg) =0.2879 moles Mg notice how the grams cancel to leave you with moles - remember dividing by a fraction is the same as multiplying by the reciprocal Now use the balanced equation's coefficients and the moles of Mg to determine the number of moles of MgO present. 2Mg + O2 --> 2MgO 2 moles Mg : 2 moles MgO -> divide both sides by 2 and it obviously becomes a 'one to one' ratio. This means that the number of moles of Mg is equal to the number of moles of MgO. This means that there are 0.2879 moles of MgO. Now that we know MgO's molar mass and the number of moles of MgO we have, the grams of MgO produced can be determined. (0.2879 moles MgO)*(44.30 g MgO / 1 mol MgO) = 12.75 grams MgO
How many mols are in 400g MgO?
The answer is 9,92 moles.
How many grams of MgO are produced when 40 grams of 02 react with Mg?
:Mg: (2.43 g)/(24.3 g/mol) = .1 mol :MgO: (.1 mol)(24.3+16.0 g/mol) = 4.03 g
The number of moles of MgO produced when 0.200 mol of O2 reacts completely with magnesium is?
0.4 moles MgO
How many moles are present in 160g of MgO?
40.3 g of MgO = 1 mole So 160 g of MgO = (1 *160) / 40.3 = 3.97 mole
How many moles of oxygen gas are needed to react with 3.50 moles of magnesium to produce magnesium oxide?
4Mg + 2O2 ---> 4MgO 4 moles of MgO is formed.
How many grams of magnesium and oxygen react to form 20 g of magnesium oxide?
Balanced Formula:2Mg + O2 --> 2MgOMole ratio:2 : 1 : 2Givens:.486 g oxygen.738 g magnesium24.3 g = atomic mass of magnesium16.0 g = atomic mass of oxygen40.3 g = molecular mass of magnesium oxideFind the amount (in moles) of Magnesium oxide that oneelement will make:(.486 g O) / (16.0 g O) × (2 moles MgO)= .0608 moles MgO(.783 g Mg) / (24.3 g Mg) = .0322 moles MgOThere is less MgO produced with magnesium than oxygen; therefore, magnesium is the limiting reactant and the oxygen is the excess reactant. The magnesium determines how much Magnesium oxide is produced. It would be good to get .0608 moles of MgO, but there isn't enough magnesium. So the amount of MgO produced will be determined on the amount of Magnesium.Convert moles of MgO produced with the amount of oxygen to grams:.0322 mol MgO (40.3 g) = 1.30 grams of MgO produced--------------------------------------------------------------------------------------------------------You will need 3 moles of oxygen if you start with six moles of magnesium. This will allow you to produce 6 moles of magnesium oxide.Source: (e2020)
How many moles are present in 1g of MgO?
2 Mg(OH)2 have 10 atoms.
What theoretical mass of magnesium oxide is produced when 82.56 grams of magnesium reacts with excess oxygen?
First write the balanced chemical equation: 2 Mg + O2 --> 2 MgO. Now solve for the theoretical amount of MgO formed: (82.56 g Mg / 1) * (1 mol Mg / 24.305 g Mg) * (2 mol MgO / 2 mol Mg) * (40.3044 g MgO / 1 mol MgO) = 136.9 g MgO.
