Choose all elements that are metals. Select 3.
Cobalt (Period 4, Group 9)
Carbon (Period 2,...
Chemistry, 17.09.2021 20:40 inneedofhelp6237
Choose all elements that are metals. Select 3.
Cobalt (Period 4, Group 9)
Carbon (Period 2, Group 14)
Hydrogen (Period 1, Group 1)
Calcium (Period 4, Group 2)
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 11:20
Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.
Answers: 2
Chemistry, 23.06.2019 01:00
What type of chemical bond is formed between two atoms of bromine 1. metallic 2. hydrogen 3. ionic 4. covalent
Answers: 1
Mathematics, 07.02.2021 06:30
Chemistry, 07.02.2021 06:30
Mathematics, 07.02.2021 06:30
Mathematics, 07.02.2021 06:30
Biology, 07.02.2021 06:30
Mathematics, 07.02.2021 06:30
Mathematics, 07.02.2021 06:30
Mathematics, 07.02.2021 06:30
English, 07.02.2021 06:30
Mathematics, 07.02.2021 06:30
Spanish, 07.02.2021 06:40
Mathematics, 07.02.2021 06:40
History, 07.02.2021 06:40
Mathematics, 07.02.2021 06:40