# Maths help regarding CaCO3

• rww63
In summary, CaCO3 is a common compound found in rocks, shells, and minerals, also known as limestone, chalk, or marble. It has various practical applications such as in cement, paper, and as a dietary supplement. The molar mass of CaCO3 is 100.09 g/mol and its reaction with hydrochloric acid produces calcium chloride, water, and carbon dioxide gas. Temperature affects its solubility, with higher temperatures resulting in less of the compound dissolving due to the endothermic nature of the process.

#### rww63

what do u want to know? what is your question, since you haven't asked anything here?

Hello,

Thank you for reaching out for help with your question. I have taken a look at the thread and it seems like the issue is related to calculating the molar mass of CaCO3. This is a common problem in chemistry and can be solved by using the periodic table to determine the atomic masses of each element in the compound and then multiplying them by the number of atoms present. I suggest checking out this resource for a step-by-step guide on how to calculate molar mass: https://www.thoughtco.com/calculate-molar-mass-of-compound-606373. If you have any further questions, please don't hesitate to ask. Good luck with your calculations!

## 1. What is CaCO3?

CaCO3 is the chemical formula for calcium carbonate, a common compound found in rocks, shells, and minerals. It is also known as limestone, chalk, or marble.

## 2. How is CaCO3 used in the real world?

CaCO3 has many practical applications, such as in the production of cement, paper, and glass. It is also used as a dietary supplement for calcium and is found in antacids.

## 3. How can I calculate the molar mass of CaCO3?

The molar mass of CaCO3 can be calculated by adding the atomic masses of calcium (40.08 g/mol), carbon (12.01 g/mol), and three oxygen atoms (16.00 g/mol each), resulting in a molar mass of 100.09 g/mol.

## 4. What is the chemical equation for the reaction of CaCO3 with hydrochloric acid?

The chemical equation for this reaction is CaCO3 + 2HCl → CaCl2 + H2O + CO2. This reaction produces calcium chloride, water, and carbon dioxide gas.

## 5. How does temperature affect the solubility of CaCO3?

As temperature increases, the solubility of CaCO3 decreases. This means that as the temperature of a solution containing CaCO3 increases, less of the compound will dissolve. This is due to the endothermic nature of the dissolution process.