Answers: 2
Chemistry, 22.06.2019 09:20
Explain that newton first law,second law and third law of motion?
Answers: 2
Chemistry, 22.06.2019 10:50
8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm
Answers: 1
Chemistry, 22.06.2019 18:00
Answer asap need to be answered 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: 3
What must be true about the earlobes of toms parents?
...
...
Mathematics, 01.07.2019 08:00
Social Studies, 01.07.2019 08:00
Mathematics, 01.07.2019 08:00
Mathematics, 01.07.2019 08:00
Mathematics, 01.07.2019 08:00
Physics, 01.07.2019 08:00
Mathematics, 01.07.2019 08:00
World Languages, 01.07.2019 08:00
English, 01.07.2019 08:00
Social Studies, 01.07.2019 08:00
Mathematics, 01.07.2019 08:00
Business, 01.07.2019 08:00
Social Studies, 01.07.2019 08:00
Social Studies, 01.07.2019 08:00
Health, 01.07.2019 08:00