There are approximately 0.5 moles of CaCO3 present in 50g of CaCO3.
A more detailed response to your request
According to the given information, we need to determine the number of moles present in 50g of CaCO3. First, we need to find the molar mass of CaCO3. The molar mass of CaCO3 is the sum of the atomic masses of all the atoms in the molecule.
The molar mass of CaCO3 = atomic mass of Ca + atomic mass of C + 3 atomic mass of O
= (40.08 + 12.01 + 316.00) g/mol
= 100.09 g/mol
Now, we can use the formula for the number of moles:
Number of moles = Mass of substance/Molar mass
Number of moles of CaCO3 = 50g / 100.09 g/mol
Number of moles of CaCO3 = 0.499 moles ≈ 0.5 moles
Therefore, there are approximately 0.5 moles of CaCO3 present in 50g of CaCO3.
To further understand the importance of the mole concept, famous chemist Linus Pauling once said, “The way to get to the essence of a material is by looking at its atoms and molecules, not its bulk.”
Here are some interesting facts regarding moles in chemistry:
- The term “mole” comes from the Latin word moles, meaning “a mass” or “a barrier.”
- The mole concept was first introduced by the chemist Amedeo Avogadro in the 19th century.
- The value of Avogadro’s constant, which relates the number of particles in a mole, is approximately 6.022 x 10^23 particles per mole.
- The mole concept is used extensively in stoichiometry, the branch of chemistry concerned with the quantitative relationships between reactants and products in chemical reactions.
- One mole of any gas at standard temperature and pressure (STP) occupies a volume of 22.4 liters.
Table:
| Formula | Molar Mass (g/mol) |
|---|---|
| CaCO3 | 100.09 |
Response via video
The video “How many moles are in 27.0 g of H2O?” explains how to solve a chemistry problem to determine how many moles are in 27.0 grams of H2O. It emphasizes that the number of moles equals the mass divided by the molar mass of the compound, and to convert grams to moles, the molar mass must be calculated first. The molar mass of H2O is found by adding up the atomic masses of its elements, resulting in a molar mass of 18.015 grams per mole. Dividing 27.0 grams by the molar mass results in 1.50 moles with three significant figures.
There are also other opinions
0.5 molesThus, option B i.e. 50 g of contains 0.5 moles of atoms is correct.
Calcium carbonate or CaCO3 can be converted to moles by using its molar mass. Explanation: Formula mass of CaCO3=40+12+3- 100amu.. 100g CaCO3= 1 mole…, so 50g of CaCO3=1÷100×50= 0.5 mole..
390 Unit 6 Changes in Matter The formula mass of CaCO3 is 100.09 amu and, therefore, the molar mass of one mole of CaCO3 is 100.09 grams. How many moles are in 50g of CaCO3? Calculate the number of moles in 50g CaCO3. ∴ 50 g of CaCO3 = (1100×50) (1 100 × 50) mole = 0.5 mole.
To convert a mass in grams of a pure substance (here, calcium carbonate) into the corresponding number of moles, divide the mass into the mass of one mole of the substance – the so-called molar mass. In this case, the molar mass of calcium carbonate is 100 g/mol.
That’s it mate, now it is up to you. Work it out!
Also, individuals are curious
Thus the number of moles in 5g of Calcium carbonate(CaCO3)= 0.05moles.
∵ Molecular mass of CaCO₃ is 100u. ∴ Molar mass of CaCO₃ is 100g/mol . Thus, 3. 011×10²³ molecules are there in 50g of CaCO₃ .