weekly math question

[Lexi Persimmons]

what would be the volume of a gas tank that has a density of 10 kg/liter and a mass of 3
kilograms?



density = mass/volume

a. 30
b. .3
c. 3
d. 15
e. no answer

[maks]

lexi persmithers + post new thread button = terrible

[juji]

b

[0bnoxious0ne]

You finally posted a pic of yourself.

[juji]

You finally posted a pic of yourself.

wrong, i already seen dp's irl face long time ago (not joke)

[Lisa Claus]

true it's pretty foul

[blumpkin blownuts]

not enough info given

if you know the molecular weight of the gas, temperature and pressure then you can use PV=nRT

ρ = m/V is for density of a liquid or non-hollow solid - applying that only gives you the volume of material used in the tank's construction. to get the volume of the tank using this formula you'd also need to know the shape and thickness of the tank

[juji]

it's a gas. PV=nRT
since there are initial values missing, assume STP

Are you sure?

[maks]

nerds itt

[juji]

Volume = Mass/Desnity as 3/10

3/10 = 0.3

[juji]

nerds itt

Also yourself

[blumpkin blownuts]

Are you sure?

still not enough info given, even assuming STP you still would need to know what gas is in it
the answer is E

[juji]

still not enough info given, even assuming STP you still would need to know what gas is in it
the answer is E

You can just find the missing variable

[blumpkin blownuts]

Volume = Mass/Desnity as 3/10

3/10 = 0.3

thats the volume of the material the tank is made of. the tank is hollow so the volume of the tank depends on the volume of the material and the tank's physical dimensions

[juji]

thats the volume of the material the tank is made of. the tank is hollow so the volume of the tank depends on the volume of the material and the tank's physical dimensions

Are you saying gas tank is material?

[blumpkin blownuts]

Are you saying gas tank is material?

right, a lump of material which has been hollowed-out in order to contain a gas

[maks]

Also yourself

I might be on the internet on a friday night but I'm not solving fucking math problems

[blumpkin blownuts]

look at it like this - lisa is a gas tank:
☑ clump of material
☑ hollow on the inside
☑ full of hot air
☑ pressurized

[Lisa Claus]

juji is correct

[blumpkin blownuts]

so the density of clump is equal to her mass, divided by (the volume of liquid she displaces minus the amount of hot air contained)
basically she has negligible density

[blumpkin blownuts]

juji is correct

you're retarded

if I take X kilograms of steel, it has volume Y
if I machine that volume of steel into the shape of a hollow tank, then that tank has volume >Y

[blumpkin blownuts]

the volume of a hollow object equals the volume of medium it displaces - that is, the volume of the chamber plus the volume of the material surrounding the chamber

there's no way to simplify it beyond this

[juji]

X and Y are considered important variables for cartesian

[blumpkin blownuts]

X and Y are considered important variables for cartesian

you can look at it that way...
keep the density of steel constant, and X and Y have a linear relationship

[Lexi Persimmons]

jeez i knew bob would show up itt and try to complicate a simple volume problem. don't really need
the other variables.

answer is b .3

congrats juji

[maks]

jeez i knew bob would show up itt and try to complicate a simple volume problem. don't really need
the other variables.

answer is b .3

congrats juji

because your question was shit, you asked "what is the volume of the gas tank" not "what is the volume of gas residing within the gas tank"

[Lexi Persimmons]

you didn't give a shit anyways. doing math on friday night is fun ah?

[maks]

make your next math question about goats and maybe I'll give a shit

[blumpkin blownuts]

with the information provided, the only volume that can be calculated is the volume of metal used to make the tank.
If you have 10kg of steel (or 0.3 L of steel) you can use that steel to make a gas tank of any volume -

with 10kg of steel you can make:
- a small tank with thick walls (aka a lisa tank)
- a large tank with thin walls
- a huge tank with paper-thin walls (aka a ramen tank)

also the volume is dependent on the shape.
an empty cylindrical tank that weighs exactly the same as an empty spherical tank is going to be smaller than the spherical one, yet they weigh the same and use the same amount of material