Answers: 3
Chemistry, 22.06.2019 15:20
An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.
Answers: 1
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
Chemistry, 22.06.2019 22:30
Why is it possible for different microorganisms to extract energy not only from carbohydrates and other biological molecules but from a large variety of substances?
Answers: 1
Chemistry, 23.06.2019 01:30
Ariver current has a velocity of 5km/h relative to the shore, and a boat moves in the same direction as the current at 5 km/h relative to the river. how can the velocity of the boat relative to the shore be calculated?
Answers: 1
What happens to the charge of the atom if one electron is removed...
Biology, 17.11.2020 18:50
Physics, 17.11.2020 18:50
Chemistry, 17.11.2020 18:50
Physics, 17.11.2020 18:50
Mathematics, 17.11.2020 18:50
Mathematics, 17.11.2020 18:50
English, 17.11.2020 18:50
Mathematics, 17.11.2020 18:50
Mathematics, 17.11.2020 18:50
Mathematics, 17.11.2020 18:50
Mathematics, 17.11.2020 18:50