Posts by nor

Total # Posts: 5

science
1.5173 g of organic iron compound containing FE , C ,H and O is burnt in oxygen gas produced 2.838 g OF carbon dioxide and 0.8122 g of water. In separate experiment to determine the mass % of iron, 0.3355 g of the compound yielded 0.0758 g iron (II) oxide. Determine the ...

Chemistry
2Li + Cu(NO3) > 2LiNO3 + Cu

Science
For a BOD5 Test: 1) why water samples needed dilution 2) How to check the test accuracy 3) Under what conditions, the water sample needs"seed"? anyone can help, please.

Chemistry
15.625mL

social studies
what are the recent findings on studies about homework

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