Science! fast! 1 question
1. why do you think some countries have a much higher population d...
Chemistry, 26.11.2019 12:31 Nathaliasmiles
Science! fast! 1 question
1. why do you think some countries have a much higher population density than others?
Answers: 2
Chemistry, 21.06.2019 22:30
If you want to create an electrical current, which situation would produce a solution capable of this
Answers: 3
Chemistry, 22.06.2019 13:30
Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?
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Chemistry, 22.06.2019 19:20
For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)
Answers: 1
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