Chemistry, 11.07.2019 19:50, kokilavani
Aball with a mass of 0.5 kilograms is lifted to a height of 2.0 meters and dropped. it bounces back to a height of 1.8 meters. the energy of the ball has been reduced by joules after bouncing back. this reduction happens because potential energy transforms to energy. hint: use pe = m Ć g Ć h where g = 9.8 m/s2. nextreset
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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
Chemistry, 23.06.2019 03:30, vaehcollier
If you need to add 27.50ml of a solution, which piece of glassware would you use to deliver this volume and explain how you would determine if the 27.50 ml was measured?
Answers: 1
Aball with a mass of 0.5 kilograms is lifted to a height of 2.0 meters and dropped. it bounces back...
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