# Chemistry

posted by .

2. Calculate the volume for the following object If you know that the object has a mass of 24 grams and the density is 12 g/ml. I tried to get rid of the 24 by multiplying it on both sides, and dividing on both sides, but neither worked. What will then? Thanks!

• Chemistry -

Density = Mass / Volume
Multiplying both sides by bolume,
Volume x Density = Mass
Dividing both sides by density,
Volume = Mass / Density
V = 24 g / 12 g/mL = ____?

• Chemistry -

density=mass/volume so
volume = mass/denstiy=24g/12g/ml= 2ml

• Chemistry -

24 grams * (1 ml/12 grams) = 2 ml
note I wrote 1 ml/12 g
so that the grams cancel
If you multiply something by something that is the same top and bottom, for example in this case 12 g and 1 ml, you do not change the amount, only the units. That is an easy way to do this sort of problem particularly if you have a whole string of unit changes in one problem.

## Similar Questions

1. ### science

Using Dimensional analysis, how do you set up a problem to find the density when given mass and volume?
2. ### Physics

i'm having trouble with this Which of the following statements about floating objects is correct?
3. ### chemistry

An object has a mass of 16.3 grams and occupies a constant volume of 85.2 mL at standard conditions. Calculate the density of the object in g/mL?
4. ### science

Bill finds an unusual object and wishes to calculate it's density. He discovers a problem of accurately weighing it, because it won't stay on the weighing pan. To solve this he adds the object to a beaker containing 59 mL of distilled …
5. ### chemistry

Bill finds an unusual object and wishes to calculate it's density. He discovers a problem of accurately weighing it, because it won't stay on the weighing pan. To solve this he adds the object to a beaker containing 190 mL of distilled …
6. ### science

Calculate Density of Object. Mass of object 34g (picture of 2 G.C's object inside one water raised in the Graduated cylinder that the object is in....) initial volume- 35mL Final Volume- 38mL density of object____________ help!?
7. ### Physics Fluids

When a crown of mass 14.7 kg is submerged in water, an accurate scale reads only 13.4 kg. Is the crown made of real gold?
8. ### Chemistry

Calculate the density of a metal object that has a dull surface and an irregular shape. It has a mass of 321 grams and a volume of 45.2 cm 3.
9. ### Science

Please help !!! A student wanted to determine the density of an object made of an unknown substance. She found the mass of the object was 335g. Then she did water displacement to determine the objects volume. The initial volume of …
10. ### Physics , static fluids

A particular object weighs 313 N in air and 264 N when immersed in alcohol of density 0.70 g/cm3. What is the volume (in L) and the density (in kg/m3) of the object?

More Similar Questions