The teacher used 1.00 g of magnesium.Use the equation to calculate the maximum mass of magnesium oxide produced.Page 5Give your answer to three significant figures.Relative atomic masses (A r): O = 16; Mg = 24
Question
The teacher used 1.00 g of magnesium.Use the equation to calculate the maximum mass of magnesium oxide produced.Page 5Give your answer to three significant figures.Relative atomic masses (A r): O = 16; Mg = 24
Solution
The equation for the reaction of magnesium with oxygen is:
2Mg + O2 → 2MgO
From the equation, we can see that 2 moles of Mg react with 1 mole of O2 to produce 2 moles of MgO.
First, we need to convert the mass of magnesium used to moles. The relative atomic mass (Ar) of Mg is given as 24, so:
Moles of Mg = mass / Ar = 1.00g / 24 = 0.0417 moles
According to the equation, 1 mole of Mg produces 1 mole of MgO. Therefore, 0.0417 moles of Mg will produce 0.0417 moles of MgO.
Next, we convert the moles of MgO to mass. The relative formula mass (Mr) of MgO is (24 + 16) = 40, so:
Mass of MgO = moles x Mr = 0.0417 x 40 = 1.67g
So, the maximum mass of magnesium oxide that can be produced from 1.00g of magnesium is 1.67g to three significant figures.
Similar Questions
12 g of magnesium ribbon was heated in a crucible. At the end of the reaction 20 g of magnesium oxide had been produced. What mass of oxygen had reacted with the magnesium?
2.4 g of magnesium metal reacted vigorously when heated with excess iron(III) oxide, Fe2O3, according to the following equation:3Mg(s) + Fe2O3(s) → 2Fe(s) + 3MgO(s) Determine the mass of solid iron produced in the reaction.
Equivalent weight of Mg in MgO will be :
How many formula units of magnesium oxide will form when excess magnesium reacts with 480 molecules of oxygen?
What is the mass in grams of 4.17 x 10^21 formula units of magnesium perchlorate, Mg(ClO4)2? Write only NUMERIC ANSWER with no units (and in correct SF) to earn computer credit. You must show complete dimensional analysis with all units properly labelled, if it comes as a short answer on your test.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.