Question

the density of osmium, which is the densest metal, is 22.57 g/cm^3. What is the mass of a block of osmium that measures 1.00 cm x 2.50 cm? show your work

Answer 1

density = mass / volume

so mass = volume * density

Answer 2

you give measures of the block as 1.00 * 2.50 which is an area not a volume

Answer 3

what is the mass of a block of osmium that measures 1.00cm x 4.00 cm x 2.50 cm?

Answer 4

is that what you need?

Answer 5

yes - so plug this value of the volume and the density into the formula for the mass

Answer 6

ok so would it be 22.57 g / 10cm^3?

Answer 7

ok - ill check

Answer 8

no its 22.57 * 10 g

Answer 9

volume * density

Answer 10

so i multiply them?

Answer 11

yes

Answer 12

'*' = multiply

Answer 13

oh ... sorry didnt realize that

Answer 14

thats ok

Answer 15

so would the answer be .02257 grams? I'm kind of confused...

Answer 16

22.57 * 10 = 225.7 g

when multiplying by 10 move decimal point one position to the right

Answer 17

oh ok that helps. so i moved it the wrong direction

Answer 18

examples

34.5 * 10 = 345

by 100 , 2 to the right:

23.67 * 100 = 2367

when dividing you move decimal to the left
eg
56.89 / 10 = 5.689

Answer 19

alright, thanks so much for your help!

Answer 20

yw