50% oxygen and 50%
Calculate the empirical formula
Mmuae Afoforo a Wobɛpaw:
32
1.5625
2
16
1
https://www.focuselearning.co.uk/s/3voqryekt2zg
Use the link to review empirical formulae.
Tackle the formative
(Note a periodic table is included in the hints for some of the questions)
https://www.focuselearning.co.uk/s/3voqryekt2zg
Use the link to review empirical formulae.
Tackle the formative
(Note a periodic table is included in the hints for some of the questions)
RAM of Na atoms =
RAM of chlorine atoms =
RFM of H2 =
RFM of CO2 =
RFM of H2O =
2
44
18
23
35.5
RFM of CH4 =
RFM of NaCl =
RFM of NH3 =
RFM of HCl(g) =
RFM of HCl(aq) =
The empirical formulae for benzene C6H6?
The empirical formula of cyclohexane C6H12 is
The empirical formula of ethene C2H6 is
The empirical formula of ethene C2H4 is
CH3
CH
CH2
A sample has an empirical formula of CH2 (14) and a molecular mass of 42 which hydrocarbon is this?
n = formula mass / empirical mass.
n = / 14
n =
molecular formula = x empirical formula
Molecular formula =
C3H6
A sample has an empirical formula of CH2 and a molecular mass of 28 which hydrocarbon is this?
C3H6
C2H4
(14)
A sample has an empirical formula of CH3 (15) and a molecular mass of 30 which hydrocarbon is this?
C2H4
C2H6
A sample has an empirical formula of CH4 and a molecular mass of 16 which hydrocarbon is this? (Note the empirical formula can be the same as the molecular formula)
C2H6
CH4
50% oxygen and 50%
Calculate the empirical formula
16.0 g of an oxide of iron formed from 11.2 g
Calculate the empirical formula
