Chemistry, 28.07.2019 18:00 Hoeing3195
For the diprotic weak acid h2a, ka1 = 4.0 × 10-6 and ka2 = 7.2 × 10-9. what is the ph of a 0.0450 m solution of h2a? what are the equilibrium concentrations of h2a and a2– in this solution?
Answers: 2
Chemistry, 22.06.2019 12:00, daytonalive83481
Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.
Answers: 1
Chemistry, 22.06.2019 14:30, neidaq12345
Select the word from the list that best fits the definition the nuclear family into which a person is born or adopted.
Answers: 2
Chemistry, 23.06.2019 01:30, babygirl091502
In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding. i
Answers: 1
For the diprotic weak acid h2a, ka1 = 4.0 × 10-6 and ka2 = 7.2 × 10-9. what is the ph of a 0.0450 m...
English, 19.02.2021 01:10
English, 19.02.2021 01:10
Mathematics, 19.02.2021 01:10
Biology, 19.02.2021 01:10