What is the mass ratio of oxygen to magnesium in magnesium oxide?

Asked By: Ganesh Moinhos | Last Updated: 2nd March, 2020
Category: science chemistry
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In Example, we established that the mass ratio of magnesium to magnesium oxide is 0.455 g magnesium/ 0.755 g magnesium oxide.

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Correspondingly, what is the percent by mass of magnesium in magnesium oxide?

Percent composition by element

Element Symbol Mass Percent
Magnesium Mg 60.304%
Oxygen O 39.696%

One may also ask, how do you calculate the mass of oxygen that reacts with magnesium? Calculating the mass of reactants

  1. Magnesium reacts with oxygen to produce magnesium oxide:
  2. 2Mg(s) + O2(g) 2MgO(s)
  3. Calculate the mass of magnesium needed to produce 12.1g of magnesium oxide.
  4. (Relative masses: Mg = 24.3, MgO = 40.3)
  5. number of moles of MgO =
  6. =
  7. = 0.300 mol.

Also to know, what is the ratio of magnesium to oxygen?

2. The correct formula for magnesium oxide is MgO, a 1.0 to 1.0 ratio. But sometimes in this experiment the ratio of Mg to O comes out too low. (Example: 0.9 to 1.0) In that case, it means that there was too much oxygen relative to the mass of magnesium.

Where does the extra mass come from in magnesium oxide?

When the magnesium is heated up, the total mass increases because magnesium reacts with oxygen, forming magnesium oxide ( so it supported the hypothesis). The increased mass is because of oxygen.

39 Related Question Answers Found

What is the percentage of magnesium?

An adult body contains approximately 25 g magnesium, with 50% to 60% present in the bones and most of the rest in soft tissues [4]. Less than 1% of total magnesium is in blood serum, and these levels are kept under tight control.

How do you find the theoretical yield of magnesium oxide?

The mole ratio of MgO and Mg is 2:2, then the mole of MgO and Mg are the same. Fourthly, we will convert the mole into the mass. We will find the theoretical yield of MgO, then we will convert the mole into the mass. Therefore, the theoretical yield mass of MgO is 8.334g .

What is the mass percent of oxygen in potassium oxide?

Percent composition by element
Element Symbol Mass Percent
Oxygen O 16.985%
Potassium K 83.015%

What is the accepted value of magnesium oxide?

Magnesium atoms are heavier than oxygen atoms, so we expect more than 50% of magnesium in the weight composition. Taking just one atom of Mg and one atom of O you will get a mass of 16.0 + 24.3 = 40.3 for the unit that represents the minimum amount of magnesium oxide. 24.3/40.3 • 100 = 60.3% in mass of magnesium in it.

What is the mass percent of magnesium in magnesium chloride?


Percent composition by element
Element Symbol Mass Percent
Magnesium Mg 25.528%
Chlorine Cl 74.472%

How many moles of magnesium is 3.01 x10 22 atoms?

Mixed Mole Conversions
Question Answer
How many moles of magnesium is 3.01 x 10^22 atoms of magnesium? 0.05 moles
How many molecules are there in 4.00 moles of glucose, C6H12O6? 2.408 x 10^24
Find the mass in grams of 2.00 x 10^23 molecules of C10H15O (called penguinone because its structure looks like a penguin.) 50.17 g

How do you find the mole ratio of magnesium to oxygen?

Magnesium is 24 and oxygen is 16. They should divide mass by the atomic mass for each element. The gives the number of moles of each. Having done this for both elements, they should find the ratio between the two by dividing them both by the smallest number.

Why do you add water to magnesium oxide?

These reactions can be used to purify synthesized magnesium oxide: Heating solid magnesium will produce both magnesium oxide and magnesium nitride. Hence, adding water to the resulting solids and heating them will produce pure magnesium oxide.

What happens when magnesium reacts with oxygen?


When the magnesium metal burns it reacts with oxygen found in the air to form Magnesium Oxide. A compound is a material in which atoms of different elements are bonded to one another. Magnesium gives up two electrons to oxygen atoms to form this powdery product. This is an exothermic reaction.

What does magnesium oxide look like?

Magnesium oxide appears as a white solid, often found as a powder. When fine particles of magnesium oxide are dispersed in air, whether directly or when generated by the burning or cutting of magnesium metal, the resulting magnesium oxide fume is an inhalation hazard. A white solid, often found as a powder.

What is magnesium oxide used for?

Magnesium is important for many systems in the body especially the muscles and nerves. Magnesium oxide is used as a supplement to maintain adequate magnesium in the body. Magnesium oxide is also used as an antacid to treat indigestion, or as a laxative to relieve occasional constipation.

Why is magnesium heavier when burned?

It is heavier than air so covers the fire, smothering it so that oxygen cannot get to it. Without oxygen, the fire triangle is broken and the fire will go out. Magnesium is above carbon in the reactivity series and so can remove oxygen from carbon dioxide and continue to burn.

How does magnesium work in the human body?

Magnesium is needed for more than 300 biochemical reactions in the body. It helps to maintain normal nerve and muscle function, supports a healthy immune system, keeps the heartbeat steady, and helps bones remain strong. It also helps adjust blood glucose levels. It aids in the production of energy and protein.

What mass of oxygen combines with 0.12 g of magnesium?


9. In an experiment, 0.12 g of magnesium reacts with oxygen to make 0.28 g of magneisum oxide. How many moles of oxygen molecules took part in the reaction? Use these Ar values: Mg = 24 and O = 16.

Is there more than one compound of magnesium and oxygen?

Magnesium (Mg) is able to bond with one oxygen (O) atom. The formula of the compound is MgO. You can see in the dot structure that the two atoms share four different electrons. It is stronger than a single bond which only uses two electrons.

What mass of magnesium oxide is produced?

The relative formula mass of magnesium oxide, MgO (40), is just a sum of the mass of magnesium (24) and the mass of oxygen (16). We are told that 24 g of Mg produces 40 g of MgO when it reacts with 16 g of oxygen.