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1 vote
A hardware salesman measures the mass of a box containing

1000
washers. The mass is
0.4168
kg
. What is the mass of a single washer in milligrams? Write your answer as a decimal.

User ADmad
by
7.8k points

2 Answers

4 votes
In this question, the box with 1000 washers has 0.4168kg mass. Then, to find the mass of a single washer you need to divide the mass with the number of washers. Then, you need to convert the unit into milligrams(1kg= 10^6mg)
It would be 0.4168 kg / 1000 * 10^6 milligram/kg= 4168mg.
User Sngreco
by
8.1k points
5 votes

Step
1

find the mass of a single washer

Divide the total mass by the number of washers


(0.4168)/(1000) =0.0004168\ Kg


0.0004168kg=4.168*10^(-4) kg

Step
2

Convert kg to mg

we know that


1 kg=1*10^(6) mg

so


4.168*10^(-4)*10^(6) =4.168*10^(2)mg=416.8 mg

therefore

the answer is


416.8 mg

User Nkchandra
by
9.7k points