Answers: 1
Chemistry, 22.06.2019 06:30
The minerals found in bones are deposited by living cells called
Answers: 1
Chemistry, 22.06.2019 12:30
The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms
Answers: 1
Chemistry, 22.06.2019 16:50
Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.
Answers: 1
Chemistry, 22.06.2019 19:20
Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?
Answers: 3
Ineed pls urgent 1-20 in order and fully detail step my step....
Chemistry, 12.03.2021 05:00
Computers and Technology, 12.03.2021 05:00
Physics, 12.03.2021 05:00
Mathematics, 12.03.2021 05:00
Social Studies, 12.03.2021 05:10
Mathematics, 12.03.2021 05:10
History, 12.03.2021 05:10
Mathematics, 12.03.2021 05:10
English, 12.03.2021 05:10
Mathematics, 12.03.2021 05:10