Question

Using the Density of water of 1 g/cm3 and Given the following dimensions, calculate the mass of the water in grams for water in the Fish tank. 22 inches high x .15 m wide x 47 cm long You must show all conversions and work for full credit.

Answer 1

Mass = density x volume.

To find the volume, I must convert 22 inches, .15 meters, and 47 centimeters all into centimeters.

There are 2.54 centimeters in an inch. 2.54 cm. * 22 in. = 55.88 cm.. This number can be rounded to 56 centimeters.

There are 100 centimeters in one meter. Therefore, .15 meters must be converted to 15 centimeters.

Because 47 is already converted, this number can remain the same.

Volume = 56 cm (height) x 15 cm (width) x 47 cm (length)

Volume = 39,480 cm^3.

Density = 1 g/cm^3

Mass = 39480 * 1

Mass = 39,480 grams

Answer 2

@Kryten

Answer 3

i didnt check your calculation trough calculator cause i believe you are capeable of entering numbers in calculator... furthermore i sudgest you for sake of calculation to round up numbers at the end if necesary, cause rounding up in each step leads to cumulative error, then id sudgest to do calculations in standard units if possilbe (m, s, etc.), and lastly regarding your rounding up please keep in mind significant number rules... but as far as i can see your calculation is right, now ill do it myself on paper and let you know what i get...

Answer 4

As far as the standard units go, don't I have to put it into cm because I need to get it to cm^3?

Answer 5

yes in your case you can calculate in cm because it is convenient, i finished my calculation and i got mass is 39395,4 g what is asked of you and if you want for measure it is ~ 39,4 kg or if you want one bag of cement heavy... :) so you did all correct

Answer 6

Okay, I also got that once I rounded at the end as you told me. Does that number make sense, though, considering the dimensions of the fish tank?

Answer 7

yes it does, now if you have measuring meter at home take it and measure 1 x 1 meter square on the flor and then measure 1 meter height and that block of space contains 1 m3 of water or 1 ton or 1000 kg of water! just for perspective nice to see it

Answer 8

and let me tell you that you have been a real refresment to help, somebody who thinks and wats to do calculations themself and dont expect answers! keep that up!

Answer 9

Oh, wow! Okay, yes, that puts it into great perspective! Oh, thanks! That's super nice of you :). You were by far the most helpful anyone has ever been on this website, so thank you so much! Have a great day!

Answer 10

Sorry, one more thing. When I'm stating the 39,395.4, can I round to 39,395? I checked, and the answer in g's and kg's ends up being the same either way. Sorry, this is end of the quarter, so I'm being super careful. Thanks :)

Answer 11

@Kryten

Answer 12

yes?

Answer 13

Alright, thanks!

Answer 14

not a problem mate not at all... in further inquieries if im online feel free to tag me