Chemistry, 29.11.2019 19:31 laniflower737
The radioisotope radon-222 has a half-life of 3.8 days. how much of a 198.6 g sample of radon-222 would be left after approximately 23 days?
Answers: 3
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Which statement describes both homogeneous mixtures and heterogeneous mixtures?
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The organism shown is a free-living one that is anchored to the bottom of ponds and streams during one stage of its life cycle what is the common name for the group to which this organism belong
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How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?
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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
The radioisotope radon-222 has a half-life of 3.8 days. how much of a 198.6 g sample of radon-222 wo...
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