Today in chemistry 11 we learned about stoichiometry.
coefficients in balanced equations represents the moles and they are also conversion factors.
remember that when you are solving a question it is always what you need over what you have.
Example: if a .15mole sample of methane reacts with oxygen how many moles of each product is produced?
The balanced equation is : CH4 + 2O2 = CO2 + 2H2O you will always need a balanced equation.
.15 mol CH4 x 1 mol CO2/1 mol CH4 = .15mol CH4
you use the coefficients for the number of moles just remember what you need/what you have
.15mol CH4 x 2mol H2O / 1 mol CH4 = .30 mol of H2O
For further help and problems refer to this website: http://www.shodor.org/unchem/basic/stoic/index.html
coefficients in balanced equations represents the moles and they are also conversion factors.
remember that when you are solving a question it is always what you need over what you have.
Example: if a .15mole sample of methane reacts with oxygen how many moles of each product is produced?
The balanced equation is : CH4 + 2O2 = CO2 + 2H2O you will always need a balanced equation.
.15 mol CH4 x 1 mol CO2/1 mol CH4 = .15mol CH4
you use the coefficients for the number of moles just remember what you need/what you have
.15mol CH4 x 2mol H2O / 1 mol CH4 = .30 mol of H2O
For further help and problems refer to this website: http://www.shodor.org/unchem/basic/stoic/index.html
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