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Molodets [167]
3 years ago
13

What is the standard unit used to measure mass? cubic meters gram liter meter

Chemistry
2 answers:
azamat3 years ago
8 0
Your answer is grams
ra1l [238]3 years ago
6 0
The answer to what standard unit of measure to mass is grams.

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4. If an experimental value for a given observation was 415 nm while the theoretical value
Alex

Answer: % error of observation is 4.77%

Explanation:

Given:

Observation value = 415nm

theoretical value= 435.8nm

Percent error of observation = theoretical value- observation value/ theoretical value x 100 %

= 435.8-415/435.8= 0.04772 x 100 = 4.77%

therefore % error of observation is 4.77%

7 0
3 years ago
How do ethical guidelines make science safer ?
Thepotemich [5.8K]

Well, for one thing, they ensure that a scientist can't claim a certain result, which might be biased and thus inaccurate, because he or she is being paid by, say, big business interests. For another, they ensure that medicines or treatments can't be made available to the public without thorough testing, replication, and peer review.

5 0
3 years ago
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In a chemical equation, which symbol should be used to indicate that a substance is in solution?
lisov135 [29]
Example :

2FeCl_3_{(aq)}+2KI_{(aq)}=2FeCl2_{(aq)}+2KCl_{(aq)}+I_2_{(s)}

If you use the subscript (aq) (=aquaris) , this means that the substance is in a solution.

Subscripts:
-aq-this means that the substance is in a solution
-s-this means that the substance is a solid(or precipitate)
-l-this means that the substance is a liquid
-g-this means that the subtance is a gas

6 0
3 years ago
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How many sigma and pi bonds does it contain ch3chchco2h?
ira [324]
Answer:
            But-2-enoic acid has 11 Sigma Bonds and 2 Pi Bonds.

Explanation:
                   The sigma bonds which are formed due to head to head overlap of partally filled orbitals are shown in red color, while Pi bonds which are formed after the formation of sigma bond by overlap of orbitals perpendicular to the sigma bond are shown in blue color.

8 0
3 years ago
Explain the relationship between cell, tissue and organs.
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The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs.

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2 years ago
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