Chemistry, 04.09.2020 01:01 richchillnqueenz1ma
Two iron weights, one twice the mass of the other, are dropped from the top of a building. Compared with the lighter weight, the twice as heavy weight will hit the ground with (2 points)
a
half the momentum
b
the same momentum
c
twice the momentum
d
four times the momentum
Answers: 1
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 21:50
If e is the symbol for an element, which two of the following symbols represent isotopes of the same element? 1. e2. e3. ea.1 and 2c.1 and 4b.3 and 4d.2 and 3
Answers: 2
Chemistry, 23.06.2019 03:30
In general metals get as you move from left to right across the periodic table.
Answers: 1
Two iron weights, one twice the mass of the other, are dropped from the top of a building. Compared...
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