1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aliya0001 [1]
3 years ago
13

Universal indicator solution

Chemistry
2 answers:
AlladinOne [14]3 years ago
8 0
Squeeze Betroot's water and test it. It works

Lynna [10]3 years ago
6 0
Shred red cabbage ~ (3/4 of a very small head)

Put the cabbage pieces in a small container ~ ( you can use a Pyrex-4-cup measure, a bowl or even a plastic zipper bag)

Cover the cabbage with very hot water. Let it sleep until the water has cooled. (somewhere between lukewarm and room-temperature) 

The purple liquid you've made is your indicator. 
Pour it into a container and compost the cabbage.

Now look for substances that may be acids or bases. 
Liquids are good, like fruits. 

You can also use solids around for baking are good too. (such as baking soda, salt, sugar, cream of tartar...)

Get containers for mixing (such as tea cups, because they are small, shallow and white inside)

Pour the indicator into the tea cups and add an acid or base.

Lemon juice, rice wine vinegar, and apple cider vinegar, turn the cabbage-water indicator into a pink.

Orange juice or fresh oranges (same thing) turn the cabbage-water indicator into an orangish-pinkish color. 

Baking soda turns the cabbage-water indicator blue.

Milk (non-fat) turns the cabbage-water indicator turn opaque and milky, yet purple.

An egg white (which won't get into the solution immediately until after a lot of stirring) turns the cabbage-water indicator blue.

Hint:
Bases mostly turn the indicator towards blue-ish colors such as purple, light blue, dark blue, opaque blue...

Acids mostly turn the indicator towards pink-ish colours such as orange-ish pink, floral pink...

(You'll have to keep on testing the cabbage-water indicator in after a day or two to see if the indicator quality persists or degrades.
You might be interested in
2. what is nappening in this diagram:
natka813 [3]

Answer:

I'm sure but send thru this picture for the question so I can help.

7 0
3 years ago
4. What will be the most effective means of increasing the dissolving<br>rate of sugar in water?​
trasher [3.6K]

Answer:

The best mean is heating the solution

3 0
3 years ago
Read 2 more answers
A 3.82 g piece of limestone contains 2.62 g of CaCO3
Kobotan [32]

Considering the definition of percentage by mass, the mass percentage of CaCO₃ is 68.59%.

<h3>What is mass percentage</h3>

The percentage by mass expresses the concentration and indicates the amount of mass of solute present in 100 grams of solution.

In other words, the percentage by mass of a component of the solution is defined as the ratio of the mass of the solute to the mass of the solution, expressed as a percentage.

The percentage by mass is calculated as the mass of the solute divided by the mass of the solution, the result of which is multiplied by 100 to give a percentage. This is:

mass percentage=\frac{mass of solute}{mass of solution}x100

<h3>Mass percentage of CaCO₃</h3>

In this case, you know:

  • mass of CaCO₃: 2.62 grams
  • mass of limestone: 3.82 grams

Replacing in the definition of mass percentage:

mass percentage=\frac{2.62 grams}{3.82 grams}x100

<u><em>mass percentage= 68.59 %</em></u>

Finally, the mass percentage of CaCO₃ is 68.59%.

Learn more about percentage by mass:

brainly.com/question/24201923

brainly.com/question/9779410

brainly.com/question/17030163

#SPJ1

7 0
1 year ago
A scientist is combining two gray elements. He thinks he will get a gray compounds. Use what you learned in this lesson to expla
adelina 88 [10]

Answer:

Explanation:

Depending on the elements that are being combined, a chemical reaction could occur and cause a change of color to take place if the elements reacts to the other one.

3 0
2 years ago
Geologists discover what seems to be a new, powdery substance, deep underground. When they analyze it it's found to contain, amo
german

Answer:

Explanation b:

5 0
2 years ago
Read 2 more answers
Other questions:
  • Explain why gasoline will not dissolve in water.
    12·2 answers
  • The number 0.00003007 expressed in exponential notation is
    8·1 answer
  • Which reflects more sunlight-dark soil or white sand?
    5·2 answers
  • What is the energy of an electromagnetic wave that has a wavelength of 0.035 m?
    7·1 answer
  • The measurement
    9·1 answer
  • the area that stretches from the highest high-tide line on land out to he point of the continental shelf exposed by he lowest lo
    10·1 answer
  • PLEASE ANSWER!
    8·1 answer
  • How many molecules of oxygen gas (O2) are in 8 grams of oxygen
    10·2 answers
  • Do you think that photochemical smog levels are high during the winter or during the summer? Explain.
    14·1 answer
  • What makes atoms different than<br> ions?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!