Matt did an experiment to study the solubility of two substances. he poured 100 ml of water at 20 °c into each of two beakers labeled a and b. he put 50 g of substance a in the beaker labeled a and 50 g of substance b in the beaker labeled b. the solution in both beakers was stirred for 1 minute. the amount of substance left undissolved in the beakers was weighed. the experiment was repeated for different temperatures of water and the observations were recorded as shown. experimental observationssubstance mass of undissolved substance at different temperatures (gram) 20 °c 40 °c 60 °c 80 °c a 50 50 50 50 b 10 8 5 2 part 1: which, if any, substance is soluble in water? part 2: explain how the data you determine solubility for both substances for temperatures 20 °c to 80 °c.
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Chemistry, 23.06.2019 01:30
At a certain temperature the rate of this reaction is first order in hi with a rate constant of : 0.0632s2hig=h2g+i2g suppose a vessel contains hi at a concentration of 1.28m . calculate how long it takes for the concentration of hi to decrease to 17.0% of its initial value. you may assume no other reaction is important. round your answer to 2 significant digits.
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Chemistry, 23.06.2019 01:30
Ascientist conducted an experiment and discovered that certain plants grow faster when given a particular amount of fertilizer. anouther scientist conducted the same experiment and got similar results. which concept does this best illustrate? a) repetition b) replication c) precision d) validity
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Chemistry, 23.06.2019 04:00
What is the volume of 2.5 moles of nitrogen gas (n2)at standard temperature and pressure (stp)?
Answers: 1
Matt did an experiment to study the solubility of two substances. he poured 100 ml of water at 20 °c...
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