Question

rahul wants to wear 6.023*10^23 Ag atoms in the form of ring his silver-gold-copper alloy ring consists of 20% of silver the mass of the ring is 0.9x the value of x

Answer 1

Explanation:

Calculate the formula weight of each of the following to threesignificant figures, using a table of atomic weight (AW): (a) chloroformCHCl

3

(b) Iron (III) sulfate Fe

2

(SO

4

)

3

.

Solution

a. 1 x AW of C = 12.0 amu 1 x AW of H = 1.0 amu3 x AW of Cl = 3 x 35.45 = 106.4 amuFormula weight of CHCl

3

= 119.4 amu

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