Posted by **INEEDHELP!!!** on Monday, December 4, 2006 at 8:10pm.

what is the symbol for chromium (II) sulfate?

You mean the formula?

CrSO

_{4}
yes! thanx!!!!!! do u know how to find the number of molecules or atoms in a mole?

The number of atoms in a mole is called Avogadro's number, the value of which is approximately 6.02 × 10^23.

There are 6.02 x 10^23 atoms in a mole of atoms, 6.02 x 10^23 molecules in a mole of molecules, 6.02 x 10^23 eggs in a mole of eggs, and in fact 6.02 x 10^23 of anythings in a mole of anything. So 6.02 x 10^23 is a number, just as we have a "dozen" eggs(meaning 12 eggs), a "gross" of pencils (meaning 144 pencils), or a ream of paper (meaning 500 sheets). So a "mole" of atoms means 6.02 x 10^23 atoms or molecules, or whatever we are talking about.

## Answer This Question

## Related Questions

- math! - george entered a function into his calculator andfound the following ...
- Chemistry - How many atoms make up the oxlate ion? C2O4= 2C atoms + 4 O atoms.
- chemistry - calculate the empirical formula: 79.8%C and 20.2%H. what os the ...
- chemistry - I was way off on the other problem. But I see how you got the answer...
- chemistry...weird question - on heatin, 0.02mol of the element M reacts with 0....
- alg2 (sequences) - how do i find the pattern for: -4,8,-12,16 if the last number...
- chemistry - the isotope caesium-137 has a half life of 30 years how long will it...
- check! - Write a recursive formula that generates the terms of the following...
- chemistry - Find the number of K atoms, C atoms, and O atoms in 95.5g of K2Cr2O7...
- Quick chemistry help - How would I find the number of atoms in this mole ...

More Related Questions