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kifflom [539]
2 years ago
14

Please help, there is a picture with the question

Chemistry
1 answer:
alexgriva [62]2 years ago
3 0

Answer:

Bromine

Explanation:

They are in the same collumn and elements share the most properties with those in their family

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3 years ago
How many particles are in a 151 g sample of Li2O?
neonofarm [45]

Answer:

3.052 × 10^24 particles

Explanation:

To get the number of particles (nA) in a substance, we multiply the number of moles of the substance by Avogadro's number (6.02 × 10^23)

The mass of Li2O given in this question is as follows: 151grams.

To convert this mass value to moles, we use;

moles = mass/molar mass

Molar mass of Li2O = 6.9(2) + 16

= 13.8 + 16

= 29.8g/mol

Mole = 151/29.8g

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