Density of copper is 8.96 g/cm3 and density of zinc is 7.14 g/cm3 . Brass is an alloy made of copper and zinc. You are given a sample of brass with the density of 8.32 g/cm3 . The price of zinc is $1.80/kg and price of copper is $6.13/kg. Determine the material cost for making one ton of the brass sample that you have.

$4375.64 is the cost for making one ton of the brass sample of mass 1 Tonn.

Explanation:

Mass of the brass = 1 ton = 907185 g

Mass of copper = x

Mass of zinc = y

x + y = 907185, ....[1]

Volume of the brass = V

Density of the brass = D =

Volume of copper = v

Volume of zinc = v'

Density of copper = d =

Density of zinc = d' =

v + v' = V

...[2]

On solving [1] and [2]:

x = 633,419 g

y = 273,766 g

1 g = 0.001 kg

x = 633,419 g = 633.419 kg

y =  273,766 g = 273.766 kg

The price of zinc = $1.80/kg

Price of 273.766 kg of zinc = $1.80/kg × 273.766 kg = $492.78

The price of copper =  $6.13/kg

Price of 633.419 kg of zinc = $6.13/kg × 633.419 kg = $3882.86

Cost for making one ton of the brass sample :

$492.78 + $3882.86 = $4375.64

n has four pairs of electrons in the valence shell, electrons repel one another ,n has 7 protons in its nucleus, and since n has 7 protons, it must fill the second shell, giving it 4 pairs of electrons. the electrons form 3 bonds and 1 lone pair of electrons. each pair of electrons repels the other pairs, so they are equally far apart.

so all of the above

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa