Wave properties
instruction active
calculating frequency
quick
check
a...
Chemistry, 20.12.2019 01:31 kaquino983
Wave properties
instruction active
calculating frequency
quick
check
a hummingbird can flutter its wings 4,800 times per minute.
what is the frequency of wing flutters per second?
flutters/second
what is the period for one wing flutter in seconds?
Answers: 2
Chemistry, 22.06.2019 02:40
Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?
Answers: 2
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If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution
Answers: 1
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Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?
Answers: 2
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]
Answers: 1
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