# Calculated Mass

1. Oct 17, 2011

### Partisan

I do online schooling or I'd just ask a teacher anywho I need to find the calculated mass of a slug by difference, I'm using centigram balance to calculate everything.
This is what I know so far:
Snug w/ beaker: 52.42g
Snug: 2.42
Beaker: 50g

I don't know if I should divide or subtract them.

2. Oct 17, 2011

### dacruick

I'm not sure I understand your question. But calculating mass by difference will mean subtract. which it seems you have already done.

3. Oct 17, 2011

### Partisan

That's what I'm thinking to but if its suppose to be the answer for a question the answer seems inadequate

4. Oct 17, 2011

### dacruick

what exactly are you trying to find? The weight of this "snug"?

5. Oct 17, 2011

### Partisan

Here's the whole question
Use the other centigram balance to determine the slug mass by difference:
Mass of beaker:_____
Mass of beaker and slug:______
Calculated mass of the slug by difference:_______

This is using a centigram balance

Last edited: Oct 17, 2011
6. Oct 17, 2011

### dacruick

you've done everything right if thats the case. If you measure the mass of the beaker, and you measure the mass of the beaker and the slug you will have Slug + Beaker - Beaker = Slug

7. Oct 17, 2011

### Partisan

Alright thanks I understand it I guess I was thinking it'd be longer or more complex than what it was :) So I guess I needed to double check, thanks for your help.

8. Oct 17, 2011

no problem:)