CaCO3 2HCl forms CO2 CaCl2 H2O
1.calculate the molar mass of calcium chloride produce
2.calculate the number of moles of calcium carbonate
3.calculate the mass of calcium carbonate
I recommend you find the + sign on your keyboard and learn to use it.
CaCO3 + 2HCl => CO2 + CaCl2 + H2O
You need to post all of the problem.
1. The molar mass of CaCl2 is 40.1+35.5+35.5 but "produced" makes no sense.
2. mols CaCO3 in what mass?
3. mass CaCO3 is what in the problem?
Limestone is mostly calcium carbonate(CaCO3.john wants to know how much calcium carbonate is in a sample of mass 3,5 g of limestone.to the limestone he then adds concentrated hydrochloric acid (HCl).the products that form are carbon dioxide (CO2),calcium chloride (CaCl2) and water (H2O.he measures the mass of calcium chloride produced and determines that it has a mass of 3,6g.
4.determine the number of moles of calcium carbonate
CaCO3 + 2HCl => CO2 + CaCl2 + H2O
mols CaCl2 = grams/molar mass = 3.6/molar mass CaCl2 = ?
Using the coefficients in the balanced equation, convert mols CaCl2 to mols CaCO3.
If you want grams CaCO3, that is mols CaCO3 x molar mass CaCO3.
To answer these questions, we need to go step by step.
1. Calculate the molar mass of calcium chloride (CaCl2):
The molar mass of an element or compound is the mass of one mole of that substance. To calculate the molar mass of calcium chloride (CaCl2), we need to find the atomic masses of calcium (Ca) and chlorine (Cl).
The atomic mass of calcium (Ca) is 40.08 g/mol.
The atomic mass of chlorine (Cl) is 35.45 g/mol.
Since we have two chlorine atoms in calcium chloride (CaCl2), we multiply the atomic mass of chlorine by 2 and add it to the atomic mass of calcium.
Molar mass of CaCl2 = (1 * atomic mass of calcium) + (2 * atomic mass of chlorine)
Molar mass of CaCl2 = (1 * 40.08) + (2 * 35.45)
Molar mass of CaCl2 = 40.08 + 70.90
Molar mass of CaCl2 = 110.98 g/mol
Therefore, the molar mass of calcium chloride (CaCl2) is 110.98 g/mol.
2. Calculate the number of moles of calcium carbonate (CaCO3):
To calculate the number of moles, we need the mass of calcium carbonate (CaCO3) and its molar mass.
Let's assume we have a certain mass of calcium carbonate, let's say 10 g.
The molar mass of calcium carbonate (CaCO3) is the sum of the atomic masses of calcium (Ca), carbon (C), and oxygen (O). The atomic masses are:
- Calcium (Ca): 40.08 g/mol
- Carbon (C): 12.01 g/mol
- Oxygen (O): 16.00 g/mol (There are three oxygen atoms in CaCO3)
Molar mass of CaCO3 = (1 * atomic mass of calcium) + (1 * atomic mass of carbon) + (3 * atomic mass of oxygen)
Molar mass of CaCO3 = (1 * 40.08) + (1 * 12.01) + (3 * 16.00)
Molar mass of CaCO3 = 40.08 + 12.01 + 48.00
Molar mass of CaCO3 = 100.09 g/mol
Now, we can calculate the number of moles using the formula:
Number of moles = Mass / Molar mass
Number of moles of CaCO3 = 10 g / 100.09 g/mol
Number of moles of CaCO3 = 0.0999 mol (approximately)
Therefore, the number of moles of calcium carbonate (CaCO3) is approximately 0.0999 mol.
3. Calculate the mass of calcium carbonate (CaCO3):
Given the number of moles of calcium carbonate (0.0999 mol) and its molar mass (100.09 g/mol), we can calculate the mass using the formula:
Mass = Number of moles * Molar mass
Mass of CaCO3 = 0.0999 mol * 100.09 g/mol
Mass of CaCO3 = 9.99 g (approximately)
Therefore, the mass of calcium carbonate (CaCO3) is approximately 9.99 g.