Question

Questions:
1) What is the mass Of one mole Of Br atoms?
2) What is the mass Of one mole Of titanium atoms?
3) What is the molar mass Of tin?
4) What is the mass Of one mole Of chromium atoms?
5) What is the mass Of 6.02 x 1023 atoms Of arsenic?
6) How many atoms are there in one mole of atoms?
7) What is the mass of one mole of Br2 atoms?
8) What is the mass of one mole of water (H20)?
9) What is the molar mass of CaC12?
10) What is the molar mass of K2Cr207?

Answer 1

Answer:

1 79.90 g.

2 47.88 g/mol

3 118.71 u

4 52.00 g/mol

5 It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022× 10²³ is called Avogadro number. So number of moles of arsenic are 1 mol.

6 The value of the mole is equal to the number of atoms in exactly 12 grams of pure carbon-12. 12.00 g C-12 = 1 mol C-12 atoms = 6.022 × 1023 atoms • The number of particles in 1 mole is called Avogadro's Number (6.0221421 x 1023).

7 79.90 g.

8 18.01528 g/mol

9 110.98 g/mol

10 294.185 g/mol