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Hi guys can someone help please I didn’t this three time already but I still got it wrong can someone please give me the answers or examples

Hi Guys Can Someone Help Please I Didnt This Three Time Already But I Still Got It Wrong Can Someone Please Give Me The Answers Or Examples class=

Sagot :

Ankit

Answer:

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Q.21 7.53*10²² atoms of O2 = 0.125 moles of O2

mass of one mole O2 = 16 grams

mass of 0.125 mole O2 = 2 grams

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Q.22 2.32*10²³ formula units of Al2(SO4)3 = 0.385 moles of Al2(SO4)3

mass of one mole Al2(SO4)3 = 342.15 grams

mass of 0.385 mole Al2(SO4)3 = 131.79 grams

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Q.23 1.50*10²² atoms of AgNO3 = 0.025 moles of AgNO3

mass of one mole AgNO3 = 169.87 grams

mass of 0.125 mole AgNO3 = 4.23 grams

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Q.24 2.55*10²² atoms of CaCO3 = 0.042 moles of CaCO3

mass of one mole CaCO3 = 100 grams

mass of 0.125 mole CaCO3 = 4.23 grams

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