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help pls! this is for chemistry tmr is my last day in trying to get this in

Help Pls This Is For Chemistry Tmr Is My Last Day In Trying To Get This In class=

Sagot :

jufsanabriasa

Answer:

130.76g of Zn are needed

Explanation:

Zinc, Zn, reacts with silver nitrate, AgNO3, as follows:

Zn + 2AgNO3 → Zn(NO3)2 + 2Ag

Where 1 mole of Zn reacts with 2 moles of AgNO3

For a complete reaction of 4 moles of AgNO3 are needed:

4mol AgNO3 * (1mol Zn / 2mol AgNO3) = 2mol Zn

The mass of Zn is (Molar mass: 65.38g/mol):

2mol Zn * (65.38g / mol) =

130.76g of Zn are needed

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