(20 points)
a student had a sample of pure water, and added an unknown substance to it. the stu...
(20 points)
a student had a sample of pure water, and added an unknown substance to it. the student notice that the hydroxide ion concentration in the solution increased as the substance was added. what is true qbout this newly formed solution?
a. it is basic
b. it is acidic
c. it is a buffer
d. it has a ph of 7
Answers: 2
Chemistry, 22.06.2019 02:50
What is the overall order of reaction for rate = k[no]2[o2]
Answers: 3
Chemistry, 23.06.2019 06:00
Each step in the following process has a yield of 70% ch4 + 4cl2 yield ccl4 +4hcl ccl4 + 2hf yield ccl2f2 + 2hcl of 4.50 mole ch4 reacts what is the total amount of hcl produced
Answers: 3
Chemistry, 23.06.2019 07:40
Which of the following has expanded our knowledge of the universe beyond our solar system the most? a. manned space travel b. the hubble space telescope c. the pioneer and voyager missions d. the international space station
Answers: 3
Chemistry, 23.06.2019 08:50
Reacting masses1 calcium carbonate breaks down on heating to produce calcium oxide and carbondioxide gas.caco3 + cao + co2a student heats 15 g of calcium carbonate strongly in a crucible.relative atomic masses (a): ca = 40, c = 12, o = 16.calculate the mass of calcium oxide produced by this reaction.(5 marks)
Answers: 3
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