10045078
Description
Flashcards by Sam Simpson, updated more than 1 year ago
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Created by Sam Simpson
over 6 years ago
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| Question | Answer |
| WATER FORMULA | H20 |
| AMMONIA FORMULA | NH3 |
| CARBON DIOXIDE | CO2 |
| CHLORINE | Cl2 |
| HYDROGEN | H2 |
| OXYGEN | O2 |
| RELATIVE ATOMIC MASS (Ar) | Multiply each relative isotopic mass by its relative abundance then add up the results Then divide by the sum of the abundances |
| Relative Formula Mass (Mr) | Find the relative atomic masses then add them all together to get the relative formula mass |
| Empirical Formula | Empirical Formula of glucose C6H12O6 numbers in molecular formula are 6 : 12 : 6 simplify the ratio by the biggest number that goes into 6 12 6 so 6 divide all three numbers by 6 and the empirical formula is CH2O |
| Avagrados Constant (You will need to calculate number of particles) | 6.02x10 to the power of 23 |
| Number of Particles | Example: Oxygen How many atoms are there in five moles of oxygen? Oxygen has 2 atoms it is O2 Avogrados Constant multiplied by number of moles 6.02x10 to the power of 23 multiplied by 5 = 3.01 x 10 to the power of 24 there are 2 atoms in oxygen so multiply it by 3.01 x 10 to the power of 24. so the answer is 6.02 x 10 to the power of 24 |
| Concentration = | Mass of Solute --------------------- Volume of Solution |
| Rr | Distance Travelled by Solute ---------------------------------------- Distance travelled by solvent |
| Equation for Neutralisation | Acid + Base ---> Salt + Water |
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