Question

An alloy is made of 20% aluminum,4%copper and the rest of mercury . find the mass of mercury in 780g of alloy.​

Answer 1

Answer:

Step-by-step explanation:

Aluminum=20%

Copper=4%

Mercury=100-24

=76%

Alloy weight= 780g

Mercury weight=780*76/100

=592.8

Answer 2

Answer:

Mass of mercury in that alloy is 592.8 g.

Step-by-step explanation:

Given,

Total mass of that alloy is 780 g.

Also,

Alloy is made of 20% aluminum and 4% copper.

= > Percentage of mercury in the alloy = total percentage { full or 1 } - percentage of aluminum - percentage of copper

* In the alloy

= > % of mercury in the alloy = ( 100% - 20% - 4% ) of alloy

= > % of mercury in the alloy = 76% of alloy

It means :

= > Mass of mercury = 76% of mass if alloy

= > Mass of mercury = 76 / 100 x 780 g

= > Mass of mercury = 592.8 g

Hence the mass of mercury in that alloy is 592.8 g.