Soundrequire a medium in order to transfer energy.
answers: does, does not...
Chemistry, 17.05.2021 19:20 KenziePaul
Soundrequire a medium in order to transfer energy.
answers: does, does not
Answers: 3
Chemistry, 22.06.2019 06:00, mbrisen7420
Compare and contrast physical changes with chemical changes.
Answers: 3
Chemistry, 22.06.2019 07:30, bbyniah123
11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg
Answers: 3
Chemistry, 22.06.2019 18:00, kyllow5644
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
History, 27.10.2020 01:00
Law, 27.10.2020 01:00
Mathematics, 27.10.2020 01:00
Mathematics, 27.10.2020 01:00
Mathematics, 27.10.2020 01:00