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erik [133]
2 years ago
14

Give atleast 5 differences in cell structures of plant and animal cells

Chemistry
1 answer:
Molodets [167]2 years ago
8 0
The shape, the cell wall, chlorophyll, the components of the nucleus, cytoplasm
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A fifth-grade science class puts half of a white tablet in a test tube with 10 milliliters (mL) of water at 21°C (70°F). The tab
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Answer:

change in water tempreture.

Explanation:

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3 years ago
18-19. If a sample for spectrophotometric analysis is placed in a 10-cm cell, the absorbance will be 10 times greater than the a
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Answer:

As long as it is a blank solution of the reagent, the Absorbance will be 0 regardless of the path length.

Explanation:

Absorbance of light by a reagent of concentration c, is given as

A = εcl

A = Absorbance

ε = molar absorptivity

c = concentration of reagent.

l = length of light path or length of the solution the light passes through.

So, if all.other factors are held constant, If a sample for spectrophotometric analysis is placed in a 10-cm cell, the absorbance will be 10 times greater than the absorbance in a 1-cm cell.

But the reagent blank solution is called a blank solution because it lacks the given reagent. A blank solution does not contain detectable amounts of the reagent under consideration. That is, the concentration of reagent in the blank solution is 0.

Hence, the Absorbance is subsequently 0. And increasing or decreasing the path length of light will not change anything. As long as it is a blank solution of the reagent, the Absorbance will be 0 regardless of the path length.

Hope this Helps!!!

5 0
3 years ago
What is the difference between a physical and chemical change? From what I know a chemical change modifies the atoms of an objec
blsea [12.9K]
Physical change: a change in which no new substances are formed. the form of the substance is changed but not it's chemical composition (ice melting, bread toasting)

chemical change: any change that results in the formation of new chemical substances. this type of change modifies molecules and atoms by making and breaking the bonds between atoms! (iron rusting, gas burning)

so basically a physical change just changes the appearance of a substance, but a chemical change changes the makeup on a molecular level. i hope this helps you out!
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3 years ago
For which purpose do biochemist insert human genes into bacteria
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Answer: to find a cure for the common cold to produce insulin for diabetics

Explanation: It has helped many people

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Chemical evolution explains how living systems were created from
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Non-living molecules.
Hope it helps! :)
8 0
3 years ago
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