Question

Help! Fan and medal for answer.

Calculate the density of the irregular-shaped solid for each trial. (Divide the mass of the solid by the volume of the solid calculated above.)

Mass of solid: 39.41 grams
Volume of Solid: 00.49

Please bear in mind that I need the correct number of sig figs in my answer. Thank you! :)

Answer 1

Do you know how many significant figures there are in the given mass and volume?

Answer 2

4?

Answer 3

thats correct for the mass

Answer 4

So would my answer need only two sig figs because of the dividing rule?

Answer 5

yes

Answer 6

So it would be:

39.41/00.49= 80.428...

But my answer would be 80?

Answer 7

8.0*10^1 is how you should write it because 80 has only one sigfig

Answer 8

But doesn't my answer need two?

Answer 9

trailing zeroes arent significant either if there's no decimal point

Answer 10

8.0*10^1 has 2 significant figures
this kind of notation is better when dealing with significant figures

Answer 11

But I guess you could also write 80.
i think

Answer 12

80 then decimal pt

Answer 13

do you get it?

Answer 14

Yeah. Thank you!