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Andrej [43]
2 years ago
5

A student conducted an experiment to determine the molar concentration of solutes in chicken eggs. Eggs were soaked in vinegar t

o remove the shells the eggs were then placed in sucrose solutions of different concentrations. The data is shown in the table below.
Sucrose
Concentration Inltial Mass Final Mass Change in Marss Percent Change
(Molar) (g) (g) (g) in Mass
0 78.50 81.73 3.23 4.11
0.5 79.11 77.50 -1.61 -2.04
1.0 80.75 75.14 -5.61 -7.12
2.0 76.99 66.64 -10.35 -13,44
b. Using the data, determine the molar concentration of chicken egg cytoplasm and justify your answer.
c. Movement of water and nutrients is critical for the survival of plants. Using the concept of water potential, explain the role of positive and negative pressure in the transport of water and nutrients throughout a vascular plant.
Biology
1 answer:
kvasek [131]2 years ago
8 0

Answer:

Explanation:

b. Based on the graph, the molar concentration is -0.32 M.

c. When water moves from areas with high water potential to areas with low, the phloem cells accumulate sugars. This results in transpiration.

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Nick is researching why baking powder is a common baking ingredient. He learns that baking powder contains tartaric acid and sod
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Answer:

A. Carbon dioxide gas forms because an acid and a carbonate react.

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Imagine that you are asked to measure the rate of respiration for a 25 g reptile and a 25 g mammal at 10 degrees Celsius. Predic
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The body temperature of the mammal will be higher than that of the reptile. this is because the mammal body temperature does not depend on its environmental temperature while a reptile does not have a stable body temperature and depend on the temperature of its environment.
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2 years ago
A 100 kg box is initially at rest on a level surface. One 10 N force acts on the box , directed toward the right. A second 10 N
Paladinen [302]

Answer:

The box will not move because balanced forces are acting on it.

Explanation:

According to Newton's first law of motion, an object will remain in its state of rest or motion along a straight line unless acted upon by an unbalanced force.

An unbalanced force is an individual force acting on any side of an object which is not balanced by a force of equal magnitude acting in the opposite direction.

From the image, two forces of equal magnitude of 10 N are pulling the 100 kg box in opposite directions. Since the two forces, 10 N each are pulling the object in opposite directions, they are balanced forces. Therefore, the box will not move because balanced forces are acting on it.

5 0
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Which trait is solely dependent on its environment?
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Leonard designed a parallel circuit to light two lightbulbs. But his circuit doesn’t work. Which two items in the circuit must b
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In a parallel circuit, the voltage across each of the components is the same, and the total current is the sum of the currents through each component.

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If each bulb is wired to the battery in a separate loop, the bulbs are said to be in parallel.


8 0
2 years ago
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