# Specific gravity of mystery fluid

1. Jul 11, 2014

### pearson.hannah

A bottle has a mass of 33.00 g when empty and 97.55 g when filled with water.
When filled with a mystery fluid the mass is 84.02 g. What is the specific gravity of the mystery fluid?

p = m/v
(p = density, m = mass, v = volume)

SG = 1000p

Attempt:
I'm really not sure how to approach this. Is there any way to find out the volumes of these substances? Or is that factor even necessary?

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Thanks in advance for any help!

2. Jul 11, 2014

### Nathanael

Do you know how to find the volume of the bottle?

3. Jul 11, 2014

### pearson.hannah

like, that's my problem because i don't know how...

4. Jul 11, 2014

### jbriggs444

You do not need to know the volume of the bottle (though it is not difficult to determine from the given information).

What is the definition of specific gravity?

5. Jul 12, 2014

### Staff: Mentor

When the bottle is filled with water, how many grams of water are there in the bottle?

What is the specific volume of water?

What is the volume of water in the bottle?

When the water is replaced with mystery fluid, what is the volume of mystery fluid in the bottle?

How many grams of mystery fluid are there in the bottle.

What is the specific volume of the mystery fluid?

Chet