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Reactivity Trends (Group 2)

An alloy of g...

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An alloy of gold and silver contains 38.5% silver by mass and has a density of 14.6 g.mL –1 . What is the molar concentration of silver in this alloy?

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There is an alloy (A) of silver and copper. A certain weight of this alloy is mixed with 15 kg of pure Silver and melted. The new alloy (B) contains $90 %$ of silver. If the same weight of alloy (A) is mixed with 10kg of a $90 %$ silver alloy, the new alloy (C) is found to contain $84 %$ silver. Find the percentage of silver in (A).

50

g

of an alloy of gold and silver contains

80

%

gold(by weight). The quantity of gold, that is to be mixed up with this alloy, so that it may contain

95

%

Q. Ornamental gold is an alloy of gold and silver.

Q. An alloy of copper, silver and gold is found to have copper constituting the

(F C C)

lattice. If silver atoms occupy the edge centres and gold is present at body centre, the alloy has a formula

Q. Calculate the weight and the percentage of silver in the silver-copper alloy being given that the latters alloy with

3

kg of pure silver contains 90 per cent of silver and with

2

90 %

silver alloy contains

84

per cent of silver.

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