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Luden [163]
3 years ago
7

What did Mendel do that made his predictions so accurate

Chemistry
2 answers:
Hoochie [10]3 years ago
8 0
He worked with large numbers of plants.
murzikaleks [220]3 years ago
6 0

Answer:

he worked wit a large number of plants

Explanation: the other guy got it right i just got it done

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In the experiment "Preparation and Standardization of a Sodium Hydroxide Solution", why was the burette rinsed with NaOH before
FromTheMoon [43]

Answer: The correct option is ALL OF THE ABOVE.

Explanation:

TITRATION is a type of volumetric analysis which is used for determining the concentration of solutions. In this process a specific volume of a solution is placed in a conical flask by means of a pipette and small quantities of a second solution is slowly added from a burette until the end point is reached. This is determined by a means of an indicator which shows a characteristic colour change.

During titration, the following precautions should be followed to avoid errors and maintain standardisation in the experiment.

--> Any air bubble in the burette and pipette must be removed during measurement

--> the burette tap should be tightened to avoid leakage.

--> Remove the funnel from the burette before taking any reading to avoid errors in reading the volume.

--> use the base solution such as Sodium Hydroxide Solution to rinse the burette after washing with soap and tap water:

• to remove any air bubble and fill it's tip

• to remove any residual liquid from the water and soap solution which may interfere with the results of the experiment.

• to check if the burette is in good condition.

Therefore all of the above options to the question are correct.

3 0
2 years ago
I need some help with chemistry. Let me know if you are good at it!
tekilochka [14]

Answer:

I think im good at it i have an A in the class

Explanation:

lol

3 0
3 years ago
Help plz I rly. Need it
babymother [125]

Answer:

It should be D.

Explanation:

3 0
3 years ago
Na2CO3 + CO2 + H2O → NaHCO3
Veseljchak [2.6K]

Answer:

i think the answer is d

Explanation:

8 0
3 years ago
Help plssssssssssssssss??
ser-zykov [4K]

Answer:

Chemical properties, such as combustibility, are generally observed as the identity of a substance changes and one or more new substances form.

Explanation:

Chemical change involves formation of new substances. Therefore, the correct answer is "Chemical properties, such as combustibility, are generally observed as the identity of a substance changes and one or more new substances form."

8 0
2 years ago
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