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devlian [24]
3 years ago
9

You have one test tube which contains a colorless solution that is either Cu+2 (aq) or Bi+3(aq). Select a reagent that will allo

w you to differentiate between the two chemical species. If the solution is Cu+2, what will happen when the reagent is added? If the solution is Bi+3, what will happen when the reagent is added?
Chemistry
1 answer:
Jlenok [28]3 years ago
8 0

Answer:

Explanation:

You can use KI and K4[Fe(CN)6].

When you add KI in a solution with only Cu2+ nothing will happen, but when you add K4[Fe(CN)6] it will form a solid of Cu2[Fe(CN)6] that will be reddish-brown.

When you add K4[Fe(CN)6] in a solution with only Bi3+ nothing will happen, but when you add KI it will form a solid of BiI3 that will be black.

So in a solution which contains both of then, you can add KI to determinate Bi3+, if you see a black solid. If nothing happens, you can affirme that it contains Cu2+.

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How is a tornado different from a hurricane? (a)A tornado causes less damage to an ecosystem. (b)A tornado brings more rain. (c)
Gnoma [55]

Answer: a tornado doesnt have an eye in the middle and its cause by wind and air but a hurricane is way different then a tornado a hurricane is only perduce by air and the force of it can damage more than a tornado and the hurricane also has an eye in the middle and its bigger than a tornado so its C

Explanation:

6 0
3 years ago
Levi is conducting a comparative experiment where he is comparing the average temperature in cities and nearby rural areas. He f
alukav5142 [94]

The major limitation is that C) he can not definitively show what causes the difference.

It may be caused by <em>something the people are doing</em> (if so, what?) or it may be caused by <em>some environmental differences</em> or a<em> combination of both</em>.


3 0
3 years ago
What is the potential energy of 25kg rock sitting on the cliff with a height of 230m?​
My name is Ann [436]

Answer:

<h2>57,500 J</h2>

Explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 10 m/s²

From the question we have

PE = 25 × 10 × 230 = 57,500

We have the final answer as

<h3>57,500 J</h3>

Hope this helps you

5 0
2 years ago
Please answerrrrrrrrrrrrrrrrrrrrrrrrr
nydimaria [60]

Answer: I'm in no way like an expert but I've heard water goes from an elevated area to a lower area. So it should be arrows that start at a more elevated to less elevated. Like white to brown, and orange to yellow, and stuff like that. I hope that helped? Anyway, have a lovely day!

Explanation:

8 0
3 years ago
What does the author predict about the future of the Earth's mantle? Do you support his educated guess? Use complete sentences t
Masja [62]

The earth's mantle will not change in the future because this region is safe from the intervention of human beings.

<h3>What happens in the Earth's mantle?</h3>

The transfer of heat and material in the mantle helps us to determine the landscape of Earth. Activity in the mantle moves the plate tectonics, that contributes to volcanoes, seafloor spreading, earthquakes, and building of mountains.

So we can conclude that the earth's mantle will not change in the future because this region is safe from the intervention of human beings.

Learn more about mantle here: brainly.com/question/349072

#SPJ1

7 0
2 years ago
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