Chemistry, 10.01.2020 15:31 burritomadness
Work is being done in which of these situations? all motions are at a constant velocity (including velocity = zero).
a.)jessica pushes a 25 kilogram cart a distance of 10 meters.
b.)bane carries a 20 kilogram box a distance of 50 meters.
c.)a weightlifter holds a 100 kilogram barbell over his head.
d.)ali is trying to push a truck away from the parking lot.
e.)yana carries a 5 kilogram bag a distance of 1 kilometer.
Answers: 2
Chemistry, 21.06.2019 22:30
Which type of bond is present in hydrogen sulfide (h2s)? the table of electronegativities is given. a. hydrogen b. ionic c. nonpolar covalent d. polar covalent
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
Work is being done in which of these situations? all motions are at a constant velocity (including...
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