Respuesta :
There are 0.154 moles of atoms in 2.00 g of carbon-13.
Further Explanation:
Moles, Atomic mass and Molecular mass
- 1 mole of a pure substance contains a mass that is equal to the relative atomic mass or molecular mass of the substance.
- Therefore; molar mass is given as grams per mole of a substance
Hence;
Molar mass = mass of a substance/ Number of moles
g/mol = g /mole
Thus;
- M = m/n; where M is the molar mass, m is the mass and n is the number of moles
- From this relationship we can therefore, calculate mass by multiplying the number of moles by molar mass of a substance.
That is; Mass = moles x molar mass
- To calculate number of moles;
We have; n = m/M
Number of moles = Mass of the substance/ Molar mass
- In our case;
Mass = 2 g of Carbon-13
Molar mass = 13.0 g/mol
Since; Number of moles = Mass/ molar mass
Thus;
Moles = (2.0 g)/ (13.0 g/mol)
= 0.154 moles
Keywords: Moles, Molecular mass, relative atomic mass
Learn more about:
- Relative atomic mass: https://brainly.com/question/11096711
- Moles calculation: https://brainly.com/question/9709257
- Molar mass: https://brainly.com/question/8992028
Level: High school
Subject: Chemistry
Topic: Moles
Sub-topic: Moles, molecular mass and mass of a pure substance.
