Posted by **Anonymous** on Wednesday, February 6, 2013 at 10:41pm.

Okay this is embarrassing but I seem to have lost my ability to do the math.... If my problem is:

200.0mg/1* 1g /1000mg* 1 mol/206.31g=

I can't remember if I have to multiply the two bottom ones first or if I just input the information in my calculator I got two answers 41.262 and 0.0009694....

- Chemistry -
**DrBob222**, Wednesday, February 6, 2013 at 10:50pm
The answer is the second one.

Punch in the first 200, hit the divide key and punch in the first denominator *1000) and hit the = key. The punch the x button, punch in 1, and hit the divide key, unch in 206.31 and hit the = key. 0.0009694. You CAN multiply 200 x 1 x 1 and divide by (1000 x 206.31) but that means writing down answers. The first way above keeps everything in the calculator and waits on the next step.

- Chemistry -
**Anonymous**, Wednesday, February 6, 2013 at 10:59pm
Thank you my brain is muddled in a sickness cloud!!

## Answer This Question

## Related Questions

- ChemistryDrBob222 could you please check this over - 0.281g of Fe(NH4)2(SO4)2*...
- chemistry - Question is: If you gain your iron from an iron citrate (Fe(C6H7O7)2...
- chemistry - The problem si 209/83bi+64/28NI=272/111Rg+1/0n How to calculate the ...
- chemistry-molarity - Say I have 50 mL of bromocresol green indicator. This ...
- chemistry - The reaction for the complete combustion of acetylene is shown below...
- chemistry - The reaction for the complete combustion of acetylene is shown below...
- Algebra - How do I solve for elimination method on this problem: 0.3x - 0.2y=4 ...
- Chemistry - I have the following equation: 0.5 ug/L x 1g/10^-6ug x 1 mol/27 g I...
- Algebra - How many square feet of grass are there on a trapezoidal field with a ...
- chem - Say I have 50 mL of bromocresol green indicator. This solution has 80mg/L...

More Related Questions