Question

a type of brass is made by combing copper and zinc in a 8:2 ratio. if you want to make 2kg of brass, how many grams of copper do you need

Answer 1

2.5 grams of Copper

Step-by-step explanation:

• Total ratio = 8 + 2 = 10

Let the grams of copper be y

`{ \tt{ (8)/(10) * y = 2 }} \\ \\ { \tt{8y = 2 * 10}} \\ { \tt{8y = 20 \: \: \: \: \: \: \: \: \: }} \\ { \tt{y = 2.5}}`

Grams of copper = 2.5 g

Answer 2

To make 2kg of brass with a 8:2 ratio of copper to zinc, you will need 1600 grams of copper.

Step-by-step explanation:

To find out how many grams of copper is needed to make 2kg of brass, we need to determine the ratio of copper to zinc in the brass. The given ratio is 8:2. We can calculate the amount of copper by multiplying the total mass of brass by the ratio of copper to zinc.

First, convert 2kg to grams: 2kg = 2000g.

Next, calculate the mass of copper: 2000g * (8/10) = 1600g.

Therefore, you will need 1600 grams of copper.