Chemistry, 27.01.2021 01:00 kayelynn003
Which of the following is NOT a organ system?
- digestive system
-regulatory system
-circulatory system
- skeletal system
Answers: 2
Chemistry, 21.06.2019 20:30
The first element on the periodic table of elements is carbon. a. true b. false
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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
Chemistry, 23.06.2019 00:30
Balance the following reaction. as2s3 + 9o2 → 2as2o3 + so2
Answers: 2
Which of the following is NOT a organ system?
- digestive system
-regulatory system
-...
-regulatory system
-...
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