Chemistry, 19.08.2021 20:50 rosieposie27
Q 4(c) [8 Marks] 1. A student is asked to prepare a 0.500 M solution of the primary standard, Na2CO3. They know that they need to start with 5.30g. Unfortunately, they have not been listening and do not know what volume to make it up to!! Can you help them?
Answers: 2
Chemistry, 22.06.2019 01:20, whrjegt4jrnfdvj
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.
Answers: 2
Chemistry, 22.06.2019 10:30, kylemartinez13
Which characteristics can be used to differentiate star systems? check all that apply.
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Chemistry, 22.06.2019 14:00, claudia122752
Will mark brainliest how many electrons can be held in the energy level n = 4?
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Q 4(c) [8 Marks] 1. A student is asked to prepare a 0.500 M solution of the primary standard, Na2CO3...
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