Chemistry, 01.02.2021 19:40, elizabethxoxo3271
A physical change does not involve a change in the substance’s chemical identity. Which of these statements describes a physical change?
Group of answer choices
A banana starts to smell as it ripens.
Onions taste sweeter after being cooked.
Aluminum cans get crushed before recycling.
Copper turns green when exposed to air.
Answers: 1
Chemistry, 22.06.2019 13:50, aesthetickait
How does the motion of particles in a gas change as the gas cools
Answers: 2
Chemistry, 22.06.2019 15:00, Zagorodniypolina5
20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?
Answers: 2
Chemistry, 22.06.2019 16:50, TrueKing184
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
A physical change does not involve a change in the substance’s chemical identity. Which of these sta...
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