Which compound is a network solid at STP?
A) CO2 B) H20 C) SiC D) NaH...
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Chemistry, 22.06.2019 01:20
1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.
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Chemistry, 22.06.2019 04:30
In which phase(s) do the molecules take the shape of the container?
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Chemistry, 22.06.2019 08:00
An observation that requires measurement is called quantitative observable or qualitative
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Chemistry, 22.06.2019 22:00
How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?
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