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first work out how many moles of Mg(OH)2 you have.
n = m /M
= 3.33 / 58 = 0.0574 mol
Then from this work out how many mol of O you have.
there are two oxygens in the formula so you have 0.0574 x 2 mol of O = 0.1148 mol
1 mol = 6.023x 1023 particles.
So 6.023 x 10 23 /1 x 0.1148 = 6.92 x 10 22
What else can I help you with?
There are 3 grams of magnesium and 2 grams of oxygen if 4 grams of magnesium oxide is produced and all of the magnesium was used up how many grams of oxygen are left?
If 3 grams of magnesium are used to form 4 grams of magnesium oxide, then 1 gram of oxygen is used in the reaction. This means 1 gram of oxygen remains unused.
If an antacid weighs 2.50g and contains 400mg magnesium hydroxide what is the percentage of the tablet that is magnesium hydroxide?
The weight of the tablet is 2.50g, which is the total weight. The weight of magnesium hydroxide is 400mg. To find the percentage, convert the weight of magnesium hydroxide to grams (0.400g) and divide by the total weight, then multiply by 100. The percentage of the tablet that is magnesium hydroxide is 16%.
What is the number of magnesium atoms that equal a mass of 24.31?
24.31 grams of magnesium is one mole of magnesium, so that is 6.022 X 1023 atoms of magnesium.
What does 16.0 grams of oxygen contains?
1 mole of O atoms, or 0.5 moles of o2 molecules.
If 16g of oxygen contains 1 mole of oxygen atoms calculate the mass of one atom of oxygen in grams?
1
There are 3 grams of magnesium and 2 grams of oxygen if 4 grams of magnesium oxide is produced and all of the magnesium was used up how many grams of oxygen are left?
If 3 grams of magnesium are used to form 4 grams of magnesium oxide, then 1 gram of oxygen is used in the reaction. This means 1 gram of oxygen remains unused.
There are 6 grams of magnesium and 4 grams of oxygen if 8 grams of magnesium oxide is produced?
2
How many grams of water are needed to produce one hundred fifty grams of magnesium hydroxide?
A lot
How many oxygen atoms are there in 3.45 grams of H2O?
3,45 grams of H2O contain 1,154.10e23 oxygen atoms.
In the reaction between magnesium and oxygen the mass of magnesium and oxygen was 2.5 grams how much magnesium oxide was formed?
The molar mass of magnesium is 24.3 g/mol and oxygen is 16 g/mol. The balanced equation is 2Mg + O2 -> 2MgO. Since magnesium and oxygen react in a 1:1 ratio, all magnesium reacted to form magnesium oxide. Therefore, 2.5 grams of magnesium oxide was formed.
If an antacid weighs 2.50g and contains 400mg magnesium hydroxide what is the percentage of the tablet that is magnesium hydroxide?
The weight of the tablet is 2.50g, which is the total weight. The weight of magnesium hydroxide is 400mg. To find the percentage, convert the weight of magnesium hydroxide to grams (0.400g) and divide by the total weight, then multiply by 100. The percentage of the tablet that is magnesium hydroxide is 16%.
How much sodium hydroxide in grams must be added to seawater to completely precipitate 86.9mg of magnesium?
To completely precipitate 86.9mg of magnesium from seawater, you would need to add an equal molar amount of sodium hydroxide. The molar mass of magnesium is about 24.3 g/mol, so 86.9mg is equivalent to about 3.57 mmol of magnesium. You would need the same amount of mmol of sodium hydroxide to completely precipitate the magnesium.
How many grams of magnesium oxide and oxygen react to form 20.0 grams of magnesium oxide?
To determine the amount of oxygen, we first find the amount of magnesium by subtracting the given 20.0 grams of magnesium oxide from the total. Given that the molar mass of magnesium oxide is 40.3 g/mol and that of magnesium is 24.3 g/mol, we calculate the amount of oxygen by adjusting accordingly. This process gives us the weight ratio of magnesium oxide to oxygen.
How many grams of magnesium would be required to produce 4.00 grams of magnesium oxide?
4.00 grams of magnesium oxide is composed of 2.43 grams of magnesium (Mg) and 1.57 grams of oxygen (O). Therefore, to produce 4.00 grams of magnesium oxide, you would need 2.43 grams of magnesium.
What is the number of magnesium atoms that equal a mass of 24.31?
24.31 grams of magnesium is one mole of magnesium, so that is 6.022 X 1023 atoms of magnesium.
What are the molar masses of magnesium and atomic oxygen?
Mass of Oxygen is approximately 16 grams. (15.9994 grams) per mole. Mass of Magnesium is approximately 24.305 grams per mole.
Why when magnesium ribbon is burnt the ash is heavier?
When Magnesium burns, it is actually combining with oxygen in the air to form a new compound, magnesium oxide. If we were to carefully weigh a piece of magnesium before and after burning it, you would see that its weight increased by about one third. For example, if you start with 100 grams of magnesium, after the burn you would end up with about 130 grams of magnesium oxide. The fact that the magnesium oxide you create by burning is powdery, means that it takes up more space (size or volume) than the solid magnesium did.
