5. How many atoms are in a 591 g sample of gold?
3.60 x 1025 atoms
O
1.81 x 1024 atoms<...
Chemistry, 04.02.2021 19:50 mathhelper22
5. How many atoms are in a 591 g sample of gold?
3.60 x 1025 atoms
O
1.81 x 1024 atoms
116,000 atoms
o
3.00 atoms
Answers: 2
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
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The ammonia molecule in the diagram has the observed bond orientation because
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Select the correct location on the image identify the element that humans need to breathe. 2015 er r ights reserved
Answers: 3
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