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
mylen [45]
3 years ago
10

As part of a science experiment, Jose did a test for starch on a slice of apple and a slice of potato. The yellow-orange iodine

solution stayed the same color when it was put on the apple, but it became black on the potato.
Chemistry
1 answer:
juin [17]3 years ago
5 0

Answer:

See explanation

Explanation:

Iodine solution is used to test for starch.  A positive test for starch gives a blue-black color.

The fact that the color of the apple remained the same is indicative of the fact that starch was not contained in the apple.

A change in the color of potato indicates the presence of starch in the potato.

The fact that iodine did not react with apple should not be taken to mean that apples contain no starch at all. Starch changes gradually to sugar as fruits ripen. This is why the apple gave a negative test for starch.

You might be interested in
Name the following FBr. ?
gogolik [260]

Answer:

FBr is a chemical formula representing "flourine monobromide."

Explanation:

Of course, FBR could represent a number of things, from the Federal Board of Revenue to a fluidized bed reactor. I gave the answer I did because you listed this question as Chemisty.

4 0
3 years ago
The movement of organisms into a range is called
Brrunno [24]
A. immigration, how is this chemistry?
8 0
3 years ago
What is the molarity of a solution that contains 125 g nacl in 4.00 l solution?
bogdanovich [222]

Answer:

[NaCl[ = 0.535M

Explanation:

We determine the moles of solute:

125 g . 1 mol/ 58.45 g = 2.14 moles

Molarity (mol/L) → 2.14 mol / 4L → 0.535M

Molarity is a sort of concentration that indicates the moles of solute in 1L of solution

4 0
3 years ago
How many grams of silver nitrate are needed to react with 156.2g of sodium sulfide to produce 595.8g of silver sulfide and 340.0
qaws [65]
Before proceeding, we should write the reaction equation to better understand what is happening:
2AgNO₃ + Na₂S → Ag₂S + 2NaNO₃

Now, we may apply the law of conservation of mass, due to which the total mass before a chemical reaction is equivalent to the total mass after a chemical reaction. Therefore:
Mass of silver nitrate + mass of sodium sulfide = mass of silver sulfide + mass of sodium nitrate

Mass of silver nitrate + 156.2 = 595.8 + 340
Mass of silver nitrate = 779.6 grams
3 0
3 years ago
21 Given the following acid dissociation constants, which acid has the strongest conjugate base?
Makovka662 [10]
The correct answer is HCN.
7 0
3 years ago
Other questions:
  • When doing a recrystallization what observations would prompt you to perform a hot filtration?
    6·2 answers
  • Fermentation of 826 mL grape juice (density is 1.0 ) is allowed to take place in a bottle with a total volume of 885 mL until 19
    9·1 answer
  • The net ionic equation for the reaction between aqueous nitric acid and aqueous sodium hydroxide is _______.
    6·1 answer
  • How are the properties of sodium chloride different than sodium and chlorine
    8·1 answer
  • A sample of gas in a balloon has an initial temperature of 37C and a volume of 1560 L. If the temperature changes to 82C , and t
    6·1 answer
  • Which term describes protein catalysts in the human body?
    15·2 answers
  • A solution has [H3O+] = 1 x 10-4 M. What is the pOH?
    9·1 answer
  • 7. Sinif caliskan yayinlar cevapları ​
    10·1 answer
  • How many pairs of autosomal chromosomes does each person without chromosomal abnormalities have?
    8·1 answer
  • Why is a solution not a pure substance?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!