10 Questions |
By Lohsj | Last updated: Jan 3, 2013
| Total Attempts: 155
Chemical Calculations Notes 1 answers to examples.
1. If your answer for number of atoms is (for example) 3. 00 x 1023, your answer has to be entered as 3. 00 x 10^23
ie. 3. 00(space)x(space)10^23
^ represents exponent.
2. If your answer has units, please leave a space after your numerical answer then put in the unit. Eg. 0. 500 mol
Key in your class, index number and name before the quiz in the following format:
3S201 Chen Ah Mao
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Questions and Answers
How many carbon atoms are present in 1.00mol of ethane, C2H6?
How many moles of O2 is present in 4.00 x 1022 molecules of oxygen gas?
How many moles of oxygen atoms are present in 2.00 x 1023 molecules of oxygen gas?
How many oxygen atoms have the same mass as one bromine atom?
What is the relative molecular mass of dinitrogen pentoxide N2O5?
What is the relative molecular mass of oxygen?
Remember the oxygen here we are talking about is oxygen gas O2.
What is the relative formula mass of lithium oxide, Li2O?
What is the relative formula mass of copper sulphate pentahydrate CuSO4.5H2O?
What is the mass of 0.500mol of water?
How many mole of oxygen is present in a bag filled with 64.0g of oxygen gas?
The following quiz deals with the physical properties of chemical substances. It will test your abilities on mixtures and pure substances. The quiz is supposed to test your knowledge and prepare you for more advanced ones. Good...
Questions: 10 | Attempts: 13579 | Last updated: May 6, 2020