Calcium

What is the mass of calcium oxide produced from kg of calcium carbonate?

**We need you to answer this question!**

###### If you know the answer to this question, please register to join our limited beta program and start the conversation right now!

## Related Questions

###### Asked in Elements and Compounds

### How many milligrams of calcium are present in 500 mg tablet of calcium carbonate?

The formula for calcium carbonate is CaCO3, and it has a gram
formula mass of 100.09. The formula shows that each formula mass
contains one calcium atom, which has a gram atomic mass of 40.08.
Therefore, the mass fraction of calcium in calcium carbonate is
40.08/100.09, so that a 500 mg tablet of calcium carbonate contains
200 mg of calcium, to the justified number of significant
digits.

###### Asked in Science

### What mass of carbon dioxide will be produced?

Full question:
Ordinary chalkboard chalk is a solid mixture with limestone
(calcium carbonate) and gypsum (calcium sulfate) as its principal
ingredients. The limestone dissolves in dilute hydrochloric acid,
producing calcium chloride, carbon dioxide, and water.
1.) Gypsum does not react with HCl. If a 5.05g piece of chalk
that is 72.0% calcium carbonate is dissolved in excess HCl, what
mass of carbon dioxide will be produced?
2.) Determine the mass percent of calcium carbonate in a 4.38g
piece of chalk that yields 1.31g carbon dioxide when it reacts with
excess HCl?

###### Asked in Manufacturing

### What is a tempered glass made of?

Tempered glass is ordinary glass that has been "toughened" by a
special heating-cooling process or by a chemical hardening process.
Most mass-produced glass is made from the ingredients Silicon
Dioxide (Silica), Sodium Carbonate, Calcium Oxide, Magnesium Oxide,
Aluminum Oxide, Sodium Sulfate and Sodium Chloride. Some tempered
glass also contains Boron.

###### Asked in Chemistry, Metal and Alloys

### How many grams of calcium carbonate are required to prepare 50.0 g of calcium oxide?

This is a mass stoichiometry problem. Start with the balanced
equation:
CaCO3 --> CaO + CO2.
Do a conversion from 50g CaO to moles:
56g/1mol=50g/x, x=.9 moles.
The equation is balanced as written, with all coefficients
understood to be 1.
So: .9 moles CaO means .9 moles CaCO3.
Do another conversion from moles to grams:
100g/1mol=x/.9 moles.
Solve for x to get 90 grams.
(56g=molar mass of calcium oxide; 100g=molar mass of calcium
carbonate.)

###### Asked in Elements and Compounds

### How many moles are there in 200 grams of Calcium Carbonate?

For a partly ionically bonded compound such as calcium
carbonate, the gram formula mass is substituted for a mole, which
technically exists only for purely covalently bonded compounds. The
gram formula mass for calcium carbonate is 100.09. Therefore, 200
grams constitutes 200/100.09 or 2.00 gram formula masses of calcium
carbonate, to the justified number of significant digits.

###### Asked in Biology, Chemistry, Organic Chemistry

### How do i find the mass of calcium carbonate in an indigestion tablet?

THE QUESTION !!!
A student wanted to find the mass of calcium carbonate in an
indigestion tablet. She crushed up a tablet and added an excess of
HCL acid (25cm3 of 1.00 mol/dm3). She the titrated the excess
against 0.5 mol/dm3 of NaOH requiring 25.8cm3 of the NaOH.
Calculate the mass off calcium carbonate in the tablet.