# Chemistry

posted by .

Ok I'm given 38.5 mg as mass. I have to find moles and number of atoms. Am I also converting mg to g? If so please help

• Chemistry -

Yes, convert 38.5 mg to grams, then remember 1 mole of atoms contains 6.022E23 atoms.

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### chemistry stoichiometry

My chem teacher gave us this problem Twelve-gauge copper wire,like the kind commonly used in residential electrical systems, is roughly cylindrical and has a diameter of approximately .1040in. Copper's density is 8.92g/cubic cm and …
2. ### Chemistry=MOLES!

I'm having trouble converting moles to grams and finding the mass of molecules. Problems I'm stuck on: What is the mass in grams of .99x10^49 Sodium Chloride Molecules?
3. ### Chemistry

Posted by Angeline on Monday, April 20, 2009 at 5:35pm. A few questions...how many grams are in 48.7x10^24?
4. ### chemistry

I'm having a little trouble doing a worksheet. 1.25 moles of KBr contains how many Br atoms?
5. ### Chemistry

I have realized I don't understand Avagado's number at all My book shows me this diagram instead of just providing a simple formulas that makes no sense at all here is what I have made sense of so far (6.022 x 10^23 atoms/mol)(mass …
6. ### chemistry finding moles

I know the formulas to a mole which equals 6.02x10 to the 23rd power but i have no idea what to do with the formula when converting grams to moles visa versa or atoms or molecules, and i have no idea what goes with what as far as what …
7. ### Chemistry

2NaOH+2Al+2H2O --> 2NaAlO2+3H2 here is the reaction. If i am trying to find the mass of hydrogen produced and i am trying to convert .95 moles Al to moles H, which number from the reaction do I use for H when converting from moles …
8. ### Chemistry

Equation: Fe+CuCl2>FeCl2+Cu We put two iron nails into the copper chloride solution:1. mass of empty dry beaker:103.64 2. mass of two iron nails, before reaction:1.20 3. mass of two iron nails after reaction: 1.01 4. mass of beaker …
9. ### chemistry

can some one help me with a few chem questions please. A chunk of iron weighs 4.32 g. a) How many iron atoms are there in this sample?
10. ### Chemistry help emergency? (theoretical mass/mol)

I am supposed to calculate the theoretical mass and moles of Cu. However I am given the mass of 2 reactants in the balanced equation: 3CuCl2*2H2O + 2Al -> 3Cu + 2AlCl3 + 6H2O I am given the mass of CuCl2*2H2O to be 0.477g and the …

More Similar Questions