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Questions (3)
Write an equation (chemical or ionic) and use oxidation numbers to find out what is being oxidized and what is being reduced.
(a)
2 answers
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2h2O2 + 2H2O ---> 2H2O + O2
If 50cmcube , 2.0 mole/dmcube of hydrogen peroxide is decomposed and volume of oxygen gas collected.
1 answer
1,235 views
Mr lol bought x oranges for $30 and sold them at a profit of 5cents per orange. Write down the (i)cost price of an orange.
(ii)th
3 answers
1,141 views
Answers (4)
Can't you be nicer and help me out? Thanks a lot (:
Btw Henry, why multiply by 20 in the end? Is it because he had sold all except 20 of the oranges?
Appreciate both of you who help me! Thanks!!!!!
Thanks a lot Henry! Your working is right! Btw, thank too Raymond for helping me out, I appreciate it a lot (:
