[Kriti]

Could someone help with this, provide the correct molecular formulas using the following.

If you have
Carbon - 60.0%
Hydrogen - 13.4%
Nitrogen - 0%

Work out the molecular formula from this.

If you have
Carbon - 48.6%
Hydrogen- 8.2%
Nitrogen - 0%

Work out the molecular formula for this.

If you have
Carbon - 59.4%
Hydrogen - 11.0%
Nitrogen - 13.9%

[chenbeier]

What your own ideas for it.

[Kriti]

Well for the first one -- I got C3H7O and c3H8O for the second one but I dont think its right so I would like to see someone else answer.

[chenbeier]

Now do you calculate it? Who says it contain oxygen?

[Kriti]

i thought because it contains no nitrogen so oxygen has to take its place.
I tried working out by working out the Mr, moles and mole ratio etc.

[chenbeier]

If so how you get the first and Second One. I got C₃H₈O and C₃H₆O₂

[Kriti]

no idea honestly
somewhere my calculation obviously doesn't add up. what did you get for the last one ?

[chenbeier]

You can show, how you calculate.

Take 100g calculate this to the percentage. Divide each through the molar mass. Get equal numbers to set oxygen equal 1.

[AWK]

https://www.periodni.com/molar_mass_calculator.php