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Colt1911 [192]
2 years ago
11

You measure the strange insect in your yard and determine that it's 10 cm long. You want to share this new insect with other sci

entists. What is the advantage of using SI units instead of some other system of measure?
SI units allow scientists to communicate around the world using the same
system of measurement.

Scientists in the United States prefer Sl units and encourage other countries to
use them too.

SI units are easier for students in a science class to use because they can be
measured by a meter stick.

SI units are easier to use in scientific studies because most of them are multiples
or divisions of 10.
Chemistry
1 answer:
blagie [28]2 years ago
4 0

Answer:

A. SI units allow scientists to communicate around the world using the same

system of measurement.

Explanation:

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I think the answer is 22.2

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igor_vitrenko [27]
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What mass of oxygen (O2) forms in a reaction that forms 15.90 g C6H12O6? (Molar mass of O2 = 32.00 g/mol; molar mass of C6H12O6
Dafna11 [192]

The answer is: the mass of oxygen is 16.95 grams.

The overall balanced photosynthesis reaction:  

6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂.  

m(C₆H₁₂O₆) = 15.90 g; mass of glucose.

n(C₆H₁₂O₆) = m(C₆H₁₂O₆) ÷ M(C₆H₁₂O₆).

n(C₆H₁₂O₆) = 15.9 g ÷ 180.18 g/mol.

n(C₆H₁₂O₆) = 0.088 mol; amount of glucose.

From chemical reaction: n(C₆H₁₂O₆) : n(O₂) = 1 : 6.

n(O₂) = 6 · 0.088 mol.

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How many chlorine ions are required to bond with one aluminum ion and why??
antiseptic1488 [7]
3 Chlorine ions are required to bond with one aluminum ion.

In ionic bonds, metals atoms loses all its outermost shell electrons to form a cation. While, non metal atoms gains however many electrons in order to make its outermost electron shell be 8 (or 2 if there's only one shell).

Therefore, form the periodic table, we can see that aluminum has a atomic number of 13, which makes its electron arrangement be 2,8,3. So, in order to form a aluminum ion, an Al atom must lose 3 electrons. On the other hand, Chlorine has a atomic number of 17, which means it has the electron configuration of 2,8,7. It has to gain only 1 electron to have 8 outermost shell electron.

Thereofre, 3 Chlorine atom are required to gain all 3 electrons given out by just 1 aluminum ion.
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