Chemistry, 07.11.2019 21:31 sierravick123owr441
At 9: 00am, a dog chased a squirrel 8 miles north. the dog gave up and stopped chasing the squirrel at 10: 00am. what was the average velocity of the dog while he was chasing the squirrel?
8 mph south
16 mph north
Answers: 1
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How do the energy differences between the higher energy levels of an atom compare with the energy difference between the lower energy level of the atom
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H2so4(aq) + mg(s)—> mgso4(aq) +h2(g) which substance is the acid in the reaction?
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What forms when chemical reactions combine pollution with sunlight?
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Answer asap need it by wednesday morning carry out the following calculations on ph and ka of from data. i. calculate the ph of 0.02m hcl ii. calculate the ph of 0.036m naoh iii. calculate the ph of 0.36m ca(oh)2 iv. calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 v. calculate ka for weak acid ha which has a ph of 3.65 at 0.30m concentration vi. calculate the ka of a solution made by mixing 15.0 cm3 0.2m ha and 60.0 cm3 0.31m a-. [ph= 3.80] vii. calculate the ph of a solution made by mixing 15.0 cm3 0.1m naoh and 35.0 cm3 0.2m hcooh. [ka = 1.82 x 10-4 m]
Answers: 1
At 9: 00am, a dog chased a squirrel 8 miles north. the dog gave up and stopped chasing the squirrel...
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