I have multiple choice homework & I have been working on these 2 problems for the past hour:
1.) What is the volume of 288 g of ice if the density is 0.92 g/mL?
2.) The density of aluminum is 2.70 g/cm cubed. What is the mass of the cube of aluminum if it is 1.00 cm each edge?
I don't understand what to do...thanks!!!
2007-03-11 14:11:07 · 5 answers · asked by Anonymous in Education & Reference ➔ Homework Help
In this case, just look at your units.
1) Asking for volume here, so you'll end up with mL. Density is how much of something occupies a certain space. They give you how much you have, just figure out how much space it takes up. In other words, divide the mass by the density.
2) Again, you have the density, but this time they give the volume. Actually they give you the size of one edge of the cube. Since it's a cube, all the sides are equal. Volume = lenthgh x width x height, so basically 1.00 x 1.00 x 1.00, and you end up with cm cubed. That's your volume. So you have density and volume, so it's basically the opposite of the last question.
2007-03-11 14:23:44 · answer #1 · answered by The Ry-Guy 5 · 0⤊ 0⤋
You just need to look at the units!
Problem #1 - Divide the mass by the density (313 ml is the volume!)
Problem #2 - Find the volume of a cub! (length^3) Then multiply the volume you found by the density (answer = 2.7 g)
2007-03-11 14:21:14 · answer #2 · answered by David T 3 · 0⤊ 0⤋
CuCl2 is a hydrate, yet that's rather in straight forward terms going to count for once you're weighing it out to place into your answer (the mass of "dry" chemical is going to be greater than if it have been anhydrous CuCl2). so a techniques as balancing the equation is going, as quickly as CuCl2 is in answer, there is a lot of water to pass around, and the water that got here approximately to be interior the forged will blend in with something (and generally no longer play an instantaneous function interior the reaction stoichiometry). so a techniques as for an unbalanced equation is going, the precise one is advantageous. To stability it you will might desire to have 2 Aluminums for each 3 Copper(II) Chlorides
2016-10-18 03:47:02 · answer #3 · answered by ? 4 · 0⤊ 0⤋
1) D=M/V
so 0.29=288/V
0.29V=288
V=288/0.29
V=993.103448276.........
2) D=M/V the volume of the cube is 1x1x1
2.70=M/1
2.70=M
2007-03-11 14:22:09 · answer #4 · answered by north 1 · 0⤊ 0⤋
Do you have Mr. Warren?
Density = Mass/Volume
2007-03-11 14:18:12 · answer #5 · answered by Anonymous · 0⤊ 0⤋