Chemistry, 22.10.2020 22:01 PrisonKing9334
Calculate the % change in pH when 4.052 g of solid NaOH (39.997 g/mol) is added to a 394 mL buffer solution of HX 0.57 M and NaX 0.31 M? Ka for HX is 2.0 x 10-5.
Answers: 3
Chemistry, 22.06.2019 05:30
What happens to the atomic radius when an elctron is lost
Answers: 1
Chemistry, 22.06.2019 06:30
Summarize possible ways in which phases of matter could combine to form a solution.
Answers: 2
Chemistry, 22.06.2019 08:00
Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next
Answers: 2
Chemistry, 22.06.2019 21:40
Tooth enamel consists mainly of the mineral calcium hydroxyapatite, ca_10(po_4)_6(oh)_2. trace elements in teeth of archaeological specimens provide anthropologist with clues about diet and diseases of ancient people. students at hamline university measured strontium in enamel from extracted wisdom teeth by atomic absorption spectroscopy. solutions with a constant total volume of 10.0 ml contained 0.726 mg of dissolved tooth enamel plus variable concentrations of added sr. added sr find the concentration of sr in the 10 ml sample solution in parts per billion = ng/ml. find the concentration of sr in tooth enamel in parts per million = mu g/g.
Answers: 2
Calculate the % change in pH when 4.052 g of solid NaOH (39.997 g/mol) is added to a 394 mL buffer s...
History, 29.01.2020 07:46
Advanced Placement (AP), 29.01.2020 07:46
Geography, 29.01.2020 07:46
Physics, 29.01.2020 07:46
Chemistry, 29.01.2020 07:46
Mathematics, 29.01.2020 07:46
Mathematics, 29.01.2020 07:46
Physics, 29.01.2020 07:46