Look at shifts in the following chemical equation when answering the questions: HIn(aq) β H + (aq) + In- (aq) (In stands for indicator, not the element indium) yellow violet 1. Add 5 mL of distilled water to a medium test tube. 2. Add a few drops of methyl violet indicator. What is the color of the solution? 3. Add 6 M HCl to the solution, drop by drop, until it changes color completely according to the chemical equation above. What species causes the color change? 4. Add 6 M NaOH until the solution changes back to its original color. Explain how [H+ ] changed, and how that change altered the color of the solution.
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Chemistry, 22.06.2019 08:30, lpssprinklezlps
What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots
Answers: 3
Chemistry, 22.06.2019 09:00, hellodarkness14
This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.
Answers: 3
Chemistry, 22.06.2019 10:00, Cythina2007
The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) β co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) β co2(g) k=1.363Γ10^69 b. 2 h2(g) + o2(g) β 2 h2o(g) k=1.389Γ10^80 c. 2co(g) + o2 (g) β 2 co2(g) k=1.477Γ10^90
Answers: 1
Look at shifts in the following chemical equation when answering the questions: HIn(aq) β H + (aq) +...
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