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Tcecarenko [31]
2 years ago
9

During a biology lab practical, students were required to identify a metal by its density. All the metals were painted green so

students could not use color as a factor to eliminate choices. Carl computed the density of his sample metal to be 8.9 g/cm3. Since Carl's lab grade depended on his accuracy and correct identification of the sample metal, he was unsure which sample he had, nickel or copper. What would you tell Carl about his density measurement? A) Disregard any decimal points and use only whole numbers. B) 8.9 is closer to to 8.91 than 8.96 so Carl should chose nickel. C) Re-do the measurements, several times, and take the average density before making a decision. D) When using water displacement to find the volume, be sure to read the meniscus to the nearest 0.01 ml.
Biology
2 answers:
den301095 [7]2 years ago
8 0

Answer:

C) Re-do the measurements, several times, and take the average density before making a decision.

Explanation:

For the correct identification of the metal, weather its nickel or copper, Carl should repeat the experiment several times and take the average density before making the decision. It is important because it reduces the chance of error and ensure the data integrity.  The more the sample size is, lessen would be the error.  

Artemon [7]2 years ago
7 0

Answer:

Re-do the measurements, several times, and take the average density before making a decision.

Explanation:

Do not rely on just one set of measurements if your grade depends on accuracy. Take several sets of measurements; next take an average. Do not round while measuring or before computing; round last.

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6 0
2 years ago
The pressurized plants and fungi mentioned in the video have some surprising similarities. What differences would you expect the
Ymorist [56]

Answer:

Plants and fungi share some similarities as well as some differences.

Some of the differences between plant and fungal cells are:

1) The cell wall of plants is made up of cellulose. The cell wall of fungal cells is made up of chitin.

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7 0
2 years ago
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Characteristics of the plasma membrane include which of the following? Select all that apply. cellulose phospholipids and protei
BigorU [14]

Answer;

-Phospholipids and protein

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3 0
2 years ago
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Which is a possible path of the movements of nitrogen in the nitrogen cycle?
barxatty [35]

Answer:

B) soil animals plants

soil

Explanation:

Nitrogen is taken up by plant roots and combined into organic substances in the plant, such as enzymes, proteins and chlorophyll. ... Plant and animal wastes decompose, adding nitrogen to the soil. Bacteria in the soil convert those forms of nitrogen into forms plants can use. Plants use the nitrogen in the soil to grow.

7 0
2 years ago
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Serga [27]

Answer:

c. 3, 5, 1, 4, 2

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<em />

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