Answers: 3
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.
Answers: 2
Chemistry, 22.06.2019 07:30
What is i fracture in the crust called when land move up, down or sideways
Answers: 2
Chemistry, 22.06.2019 14:50
Given the following information: mass of proton = 1.00728 amu mass of neutron = 1.00866 amu mass of electron = 5.486 × 10^-4 amu speed of light = 2.9979 × 10^8 m/s calculate the nuclear binding energy (absolute value) of 3li^6. which has an atomic mass of 6.015126 amu. j/mol.
Answers: 2
Chemistry, 22.06.2019 15:00
Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?
Answers: 1
Explain why quartz, sio2(s), does not spontaneously decompose into silicon and oxygen at 25 °c in th...
Mathematics, 27.01.2021 18:20
Mathematics, 27.01.2021 18:20
Geography, 27.01.2021 18:20
Biology, 27.01.2021 18:20
Biology, 27.01.2021 18:20
Spanish, 27.01.2021 18:20
Mathematics, 27.01.2021 18:20
Mathematics, 27.01.2021 18:20
Social Studies, 27.01.2021 18:20
Law, 27.01.2021 18:20
History, 27.01.2021 18:20
Mathematics, 27.01.2021 18:20