Write the equation and balance it.
Mg + Br2 ==> MgBr2
Convert 3.214 g Mg to moles. moles = grams/molar mass
Convert 8.416 g bromine to moles using th same procedure.
Since you know bromine is the limiting reagent (since Mg is in excess), work this as in any stoichiometry problem.
Convert the 1.934 g Mg to moles and subtract from moles you had to start with. That will give you the moles Mg that reacted. Then convert that to moles MgBr2 using the coefficients in the balanced equation.
moles Mg used x (1 mole MgBr2/1 mole Mg) = moles Mg used x 1 = moles MgBr2 produced.
Then g MgBr2 = moles MgBr2 x molar mass MgBr2.
When magnesium is heated in air, it reacts with oxygen to form magnesium oxide. 2Mg + O2 --> 2MgO If the mass of the magnesium increases by 0.335 g, how many grams of magnesium reacted? A. 0.882 B. 0.441 C. 0.509 D. 1.02 E. Not
Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. How many grams of magnesium
You are going to be provided with 1 0.50 g sample of magnesium oxide. Treatment of this sample with hydrochloric acid (HCl) will take all of the MAGNESIUM in the oxide and change it into magnesium chloride, MgCl2 You will add 100
16.2g of magnesium reacts exactly with 25.3g of fluorine to produce magnesium fluoride, the only product. How many grams of magnesium fluoride could be produced from the reaction of 10.5g of magnesium with excess fluorine. This is
Magnesium burns in air to produce magnesium oxide, MgO, and magnesium nitride, Mg3N2. Magnesium nitride reacts with water to give ammonia. Mg3N2(s) + 6 H2O(l) → 3 Mg(OH)2(s) + 2 NH3(g) What volume of ammonia gas at 24°C and
How many atoms of each element are in this compound? MgBr2 A. 2 magnesium atoms and 2 bromine atoms B. 2 magnesium atom and 2 bromine atoms C. 2 magnesium atoms and 1 bromine atom D. 1 magnesium atom and 2 bromine atoms
If we burn a strip of magnesium in air, there will be two main products, magnesium oxide and magnesium nitride. If we then treat that mixture with water, the nitride ion is converted to ammonia. After boiling away the water and