All categories

3 years ago

Lithium has two isotopes.

1 answer:

6 0

This is in the assumption that these are the only 2 isotopes. This means that:
abundance of Li-6 = X
abundance of Li-7 = 1-X

Hence from your equations
6.9409 = (X * 6.015121amu) + ((1-X) * <span>7.016003amu</span>)
Solve for X = 0.075 or 7.50%

You might be interested in

How many grams in 6.20 x 10^25 atoms of bromine (Br) ? image attached , will give brainliest

Deffense [45]

Answer:

8239.2g

Explanation:

Given parameters:

Number of atoms in Br = 6.2 x 10²⁵atoms

Unknown:

Mass of Br = ?

Solution:

From mole concepts, we know that:

1 mole of a substance contains 6.02 x 10²³ atoms/mol

Molar mass of Br = 80g/mol

6.2 x 10²⁵atoms x $\frac{1}{6.02 x 10^{23} }$ $\frac{mol}{atoms}$ x 80 x $\frac{g}{moles}$

= 8239.2g

8 0

2 years ago

Name of compound AgC2H3O2

BaLLatris [955]

Answer:

AgC2H3O2 is: Silver acetate

7 0

2 years ago

What is the term for the study of matter and the changes it undergoes

WARRIOR [948]

Answer:

Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation

Explanation:

Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation

7 0

3 years ago

Read 2 more answers

Al (s) + CuSO4 (aq) → Cu (s) + Al2(SO4)3 (aq)

azamat

Answer:

Explanation:

Al (s) + CuSO4 (aq) → Cu (s) + Al2(SO4)3 (aq)

2Al (s) + 3CuSO4 (aq) → 3Cu (s) + Al2(SO4)3 (aq).

is the balance chemical equation

3 0

3 years ago

Ethylenediamine is a bidentate ligand. The oxalate group, used in this experiment was also a didentate ligand. The structure of

Murljashka [212]

Answer:

Ethylene diamine will bond to the Central metal via a lone pairs of electrons on nitrogen

Explanation:

Complexes are formed by coordinate bond formation. Before a coordinate bond is formed, one of the species must have a lone lair of electrons available for donation into empty orbitals on the central metal.

Ethylene diammine contains nitrogen which has a lone pair of electrons. The two lone pairs on the two nitrogen atoms can bond with the central metal. This makes ethylene diammine a bidentate ligand (two bonding atoms).

5 0

2 years ago