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chemical calculations - Coggle Diagram
chemical calculations
RFM
to find the relative formula masses of a compound
add up the relative atomic massive of all the atoms in the formula
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moles
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1mol=6.02x10^23 atoms, molecules or ions
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limiting reactants
1) divide mass by mr, to calculate the number of moles of each
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Atom economy
percentage atom economy= RFM of the different products from the equation/ sum of RFM OF THE REACTANTS FROM EQUATION X 100
inefficiency, wasteful processes have low atom economy
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titration
fill conical flask with 10 centimeters cubed of sulfate acid. Using the pipette filler. Slowly pull up until the volume is correct. Fill up the beer burette to the 50 centimeter line with sodium hydroxide making sure the top is closed. Fill the sulfuric acid with five to 10 drops of the indicator and swirl it around. Place the conical flask on white tile and put it under the tritete Slowly add the sodium hydroxide drops by drop and keep swirling into let go to quit the volume used is the amount it takes to neutralize gas volumes one mole of each gas at room temperature brackets 25 degrees Celsius, close brackets and normal atmospheric pressure has a volume of 24 dm cubed number of moles equals mass over relative atomic mass
gas volumes
1 mole of each gas at room temperature and normal atmospheric pressure, has a volume of 24dm^3
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