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Chemistry, 26.10.2020 23:00 kevinmarroquin6
Four friends visited an island. The island was far away from the mainland. No humans lived on the island. The friends talked about what would happen if all of the [plants disappeared on the island. This is what they said.
Harold: “I think all the animals on the island would eventually die.”
Jeff: “I think the animals that plants would eventually die without animals that
eat both plants and animals would live”.
Salma: “ I think only the predators on the island would live.”
Misha: “ I think eventually all the animals on the island will become meat eaters,
and they will survive without plants.”
Which friend Explain why you agree.
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Answers: 3
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Chemistry, 22.06.2019 18:00
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]
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Four friends visited an island. The island was far away from the mainland. No humans lived on the is...
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