A chip used in a microcomputer contains 5.74 x 10-3g of silicon. Calculate the number of silicon atoms in the chip. [ Si = 28; Avogadros constant 6.02 x 1023]
vidaekugo:
sorry i forgot to add this[Zn = 65, C = 12, O = 16, H = 1, Cl = 35.5]
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Answer:
12341 x 10^16
Explanation:
mole= weight in gm/ molecular weight
no. of atoms = mole X Avogadros constant
mole = 5.74 x 10^-3 / 28 = 0.205 x 10^-3 mole
no. of atoms = 0.205 x 10^-3 x 6.02 x 10^23 = 12341 x 10^16
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