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ICE Princess25 [194]
3 years ago
13

Plant cells and animal cells were observed under a microscope. The characteristics of two cells are listed below.

Chemistry
2 answers:
Arisa [49]3 years ago
6 0
<h2>Answer:</h2>

The correct answer is option C which is cell can be a plant cell or an animal cell.

Explanation:

  • The statement is is that cell has cell membrane. Cell membrane is the outer covering membrane which is present in both cells. While cell wall is a external hard membrane present only in plant cells.
  • In the statement D, the presence in the large molecule usually in the center of cell is the indication of plant cell. It gives the upright direction in plants and it stores large amount of water and food.
  • Hence the correct answer is option C.
Blababa [14]3 years ago
3 0

Answer:cell c is plant cell d is animal

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Answer:

If we assume the molar volumes of water and ethanol 17.0 and 57.0 cm³/mol, respectively, Vmix = 20.5 cm³.

Explanation:

The molar volume of a substance is the ratio between the volume and the number of moles of the substance. It represents the volume that 1 mol of it occupies. Because we don't have access to page 24, let's assume the molar volumes of water and ethanol 17.0 and 57.0 cm³/mol, respectively.

The volume of mixture (Vmix) is the sum of the volume of each substance, which is the number of moles multiplied by molar volume, so:

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Adding 5.25 g of to 130 g of water in a coffee-cup calorimeter (with stirring to dissolve the salt) resulted in a decrease in te
xxTIMURxx [149]

Answer:

ΔHrxn =  - 1534.3 J

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Given the assumptions and the formula for the change in enthalpy:

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we have ,

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After verifying our result has the correct unit, the answer is -1534.3 Joules, and the negative sign tells us it is an endothermic reaction decreasing the final temperature.

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