Dr. Bob222,

Calculate the moles of C2H6 in 8.60×1023 molecules of C2H6.
I did what you said, I got 8.60*10^23*(1mole/6.02*10^23) = 1.43*10^46??? This is not the answer.. am I doing something wrong?

yes. bAsic math.

x^a * x^b= x^ (a+b)

x^a/x^b= x^(a-b)

you added exponents. The answer is 1.43

the calculator said it.. I didn't do anything but plug it in.. sorry, thanks for help

To calculate the moles of C2H6 in 8.60×10^23 molecules, you need to use the conversion factor between moles and molecules.

The conversion factor is:

1 mole of C2H6 = 6.02×10^23 molecules of C2H6.

To use this conversion factor correctly, you need to set up the calculation as follows:

8.60×10^23 molecules of C2H6 * (1 mole of C2H6 / 6.02×10^23 molecules of C2H6)

When you multiply these values together, you should get:

= (8.60×10^23)/(6.02×10^23) mole of C2H6

Simplifying the equation, you get:

= 1.43 moles of C2H6

So, the correct answer is 1.43 moles of C2H6.

It seems like you made a calculation error in your calculation by multiplying the number of molecules by the conversion factor. Make sure to divide the number of molecules by the conversion factor instead, as shown in the correct calculation above.