karrieg32 karrieg32

26-01-2020
Chemistry

contestada

the number of moles in 2.93 g of Li2O in corrext sig figs

Respuesta :

Onoriodefelix Onoriodefelix

26-01-2020

Answer:

0.1 mol

Explanation:

Number of mole= mass/molar mass

lithium have a mass number of 7 and oxygen have a mass number of 16.

so, (7x2) + 16

= 30

therefore, number of moles = 2.93/30

= 0.10

Answer Link

bigdammy2013 bigdammy2013

26-01-2020

Answer:

Mass of Li2O = 2.93g

Molecular mass of Li2O = 29.88g/mol

No of mole of Li2O = Mass/Molar mass

No of mole of Li2O = 2.93/29.88

No of mole of Li2O = 0.0981mol

Answer Link

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