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just olya [345]
3 years ago
9

Celery stalks that are immersed in fresh water for several hours become stiff and hard. similar stalks left in asalt solution be

come limp and soft. from this we can deduce that the cells of the celery stalks are
Chemistry
1 answer:
galina1969 [7]3 years ago
4 0
Plasmolysed because of osmosis as the salt solution has lower water potential than the cells of the stalk
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21. Draw Lewis structure
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Answer:

C contains one N and three I atoms

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2 years ago
How do you boil water less than 100​
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3 years ago
A chemical reaction is shown below:
BabaBlast [244]

Answer:

Mass = 8.46 g

Explanation:

Given data:

Mass of water produced = ?

Mass of glucose = 20 g

Mass of oxygen = 15 g

Solution:

Chemical equation:

C₆H₁₂O₆ + 6O₂     →   6H₂O + 6CO₂

Number of moles of glucose:

Number of moles = mass/molar mass

Number of moles = 20 g/ 180.16 g/mol

Number of moles = 0.11 mol

Number of moles of oxygen:

Number of moles = mass/molar mass

Number of moles = 15 g/ 32 g/mol

Number of moles = 0.47 mol

now we will compare the moles of water with oxygen and glucose.

               C₆H₁₂O₆           :            H₂O

                   1                   :              6

                 0.11                :           6/1×0.11 = 0.66

                   O₂               :            H₂O

                   6                   :              6

                 0.47                :           0.47

Less number of moles of water are produced by oxygen thus it will limit the yield of water and act as limiting reactant.

Mass of water produced:

Mass = number of moles × molar mass

Mass = 0.47 mol  ×18 g/mol

Mass = 8.46 g

8 0
3 years ago
In this experiment, you will use a track and a toy car to explore the concept of movement. You will measure the time it takes th
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8 0
3 years ago
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Answer:

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