subject
Chemistry, 20.10.2019 20:30 GoAheadAndSmileToday

Suppose you have a solution that might contain or all of the following cations: cu2+, ag+, ba2+, and mn2+. addition of hbr causes a precipitate to form. after the precipitate is filtered off, h2so4 is added to the supernate another precipitate forms. this precipitate is filtered off, and a solution of naoh is added to the supernatant liquid until it is strongly alkaline. no precipitate is formed. which ions are present in each of the precipitates? which cations are not present in the original solution?

ansver
Answers: 3

Another question on Chemistry

question
Chemistry, 21.06.2019 17:00
Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects
Answers: 2
question
Chemistry, 22.06.2019 10:30
Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.
Answers: 1
question
Chemistry, 22.06.2019 11:40
Consider this equilibrium: n29) + o2(g) + 2no(c).nitrogen gas and oxygen gas react when placed in a closed container. as the reaction proceeds towards equilibrium, what happens to the rate of thereverse reaction?
Answers: 1
question
Chemistry, 22.06.2019 12:40
When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign
Answers: 2
You know the right answer?
Suppose you have a solution that might contain or all of the following cations: cu2+, ag+, ba2+, an...
Questions
question
Mathematics, 30.10.2020 04:50
question
Social Studies, 30.10.2020 04:50
question
Mathematics, 30.10.2020 04:50
question
Mathematics, 30.10.2020 04:50