Question

How many pounds does a 1.0000 quart of mercury weight? Its density is 13.55 g/ml at 25Celsius.
I am really lost with this question I know I have to use the density formula as a conversion factor but am not that great at conversion factors :/

Answer 1

density = mass/ volume

Answer 2

convert quart unit to mL
and use the formula to find mass
mass = density x volume

Answer 3

you answer for mass will be in grams so convert to pounds
thats your final answer

Answer 4

1 quart = 946.352 ml
1000 quart = ?
so x= 946.352 x 1000 = volume in mL

Answer 5

1 gram = 0.00220 pounds
mass you get using the formula = ?
x= mass you get using the formula x 0.00220 pounds =

Answer 6

weight of mercury in ponds

Answer 7

pounds*

Answer 8

hope its clear :)

Answer 9

I went from qt->L->mL->g->lb but

Answer 10

1.0000qt X 1L/1.057qt X 1000mL/1L X 13.55g/1mL X 1lb/453.59g

Answer 11

The end result I got was 28.261866 in scientific notation 2.8262 X 10 lb
after everything cancels out. I m nt sure its correct

Answer 12

u got the right ans

Answer 13

they just converted it to standard form

Answer 14

wait i'll get on os from laptop

Answer 15

yep so what i was saying
you got your result as 28.261866 = round off 28.262
and now when u convert it to its standard form and that is having only one number before decimal
but you have two numbers which are 2 and 8
so you need to move backwards (i mean the decimal point)
thus you will get 2.8262 x 10 as your final answer

Answer 16

oh wait i got u wrong sec i'll try the working (just woke up lol so my brain is barely working)

Answer 17

lol no worries thank you :)

Answer 18

282701 pound

Answer 19

to clarify one thing
1.0000 = this is 10000 or that dot is decimal?

Answer 20

decimal

Answer 21

because usually if after decimal there are zeros, we put only 2 of them
but here there are 4 so its most probably number
r u sure?

Answer 22

alright then you did it right pretty much

Answer 23

Yes the notebook has 4 zeros after the decimal I think because they want an answer with 5sig figs

Answer 24

ah yeah makes sense

Answer 25

sorry brain still trying to wake up lol

Answer 26

I have a question tho I rounded the very last # 1 to 2 bc of hte 8 that followed the 2. Should I have done that or just left it as a 1?

Answer 27

2 is fine

Answer 28

rounding of when it comes to numbers close to decimal - is not fine
but just rounding the ending as far as i know its fine

Answer 29

Ok thank you so much :)

Answer 30

oh waw you just turned me green :D

Answer 31

lol no way :D Go you!!

Answer 32

lol thnks!

Answer 33

your medal increased my smartscore
just one eh