Chemistry, 22.05.2021 22:30 zombieslayas8500
A student is testing a substance using blue litmus paper, an indicator. She
submerges the litmus paper in the substance she is testing and observes a
color change. Which of these is an accurate analysis of her observation?
The substance must be acidic because the litmus paper turned red.
The substance must be basic because the litmus paper turned red.
The substance releases OH-ions because the litmus paper turned green.
The substance has a pH 7.0 or greater because the litmus paper turned green
Answers: 3
Chemistry, 22.06.2019 06:00
In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?
Answers: 3
Chemistry, 22.06.2019 08:30
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 11:30
What is the main reason why some developing countries fear the increase the free trade policies around the world?
Answers: 2
A student is testing a substance using blue litmus paper, an indicator. She
submerges the litmus pa...
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