Chemistry, 01.08.2019 21:00 studentms5313
)how many molecules are in 23 moles of sodium? 4) how many moles are in 8.022 x 1026 molecules of nacl?
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How is the atomic number of a nucleus changed by alpha decay
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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, 22.06.2019 23:00
Which type of intermolecular attractions holds ammonia molecules together with other ammonia molecules?
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Chemistry, 23.06.2019 02:00
What causes the appearance of lines in a emission spectrum
Answers: 1
)how many molecules are in 23 moles of sodium? 4) how many moles are in 8.022 x 1026 molecules of...
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