The molar mass of the Carbon-12 from the periodic table is given to be 12.011 g. Multiply this mass with the number of moles given.
(0.25 moles) x (12.011 g / mole) = 3 g
Thus, the mass of 0.25 moles of carbon-12 is 3 g.
Answer:
50%
Explanation:
You would have to do 15 divided by 30 x 100 to get 50
Percentage Yield = Actual Yield divided by Theoretical Yield
Hope this is right and helpful
Answer:
The only PH range which is not covered by any of the given components of the universal indicator is 7.6-8.0
Hence the PH range 7.6-8 can't be described using universal indicator.
Answer:
6 atoms of carbon.
Explanation:
Hello,
In this case, we can easily compute how many times the molar mass of the empirical formula is in the molecular formula by firstly computing it:
![M=12.01g/mol*1+1.01g/mol*1+35.45g/mol*2\\\\M=47.58g/mol](https://tex.z-dn.net/?f=M%3D12.01g%2Fmol%2A1%2B1.01g%2Fmol%2A1%2B35.45g%2Fmol%2A2%5C%5C%5C%5CM%3D47.58g%2Fmol)
Then, we divide them:
![\frac{290.8g/mol}{47.58g/mol}= 6.111](https://tex.z-dn.net/?f=%5Cfrac%7B290.8g%2Fmol%7D%7B47.58g%2Fmol%7D%3D%206.111)
Which is approximately 6, for that reason, we are going to find six atoms of carbon in the molecule.
Regards.
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