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Natalka [10]
3 years ago
7

If matter is uniform throughout and cannot be separated into other substances by physical processes, but can be decomposed into

other substances by chemical processes, it is called a(n) ________.
Chemistry
1 answer:
elixir [45]3 years ago
5 0

Answer:

Compound

Explanation:

A compound is a substance that cannot be broken down by an ordinary physical process but can be split into its component elements by chemical processes such as decomposition, dissociation, displacement.

A compound is made up of two or more different atoms. A particular compound is unique/uniform in its composition and doesn't share its particular composition with another compound. For example, carbon monoxide (CO) is made up of one atom of carbon and one atom of oxygen while carbon dioxide (CO₂) is made up of one atom of carbon and two atoms of oxygen.

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How many grams of Boron can be obtained from 234 grams of B2O3?
Xelga [282]

Answer:

72.67g of B

Explanation:

The reaction of B₂O₃ to produce boron (B), is:

B₂O₃ → 3/2O₂ + 2B

<em>That means B₂O₃ produce 2 moles of boron</em>

Molar mass of B₂O₃ is 69.62g/mol. 234g of B₂O₃ contains:

234g B₂O₃ ₓ (1mol / 69.62g) = 3.361 moles of B₂O₃.

As 1 mole of B₂O₃ produce 2 moles of B, Moles of B that can be produced from B₂O₃ is:

3.361mol B₂O₃ ₓ 2 = <em>6.722 moles of B</em>.

As molar mass of B is 10.811g/mol. Thus mass of B that can be produced is:

6.722mol B ₓ (10.811g / mol) = <em>72.67g of B</em>

4 0
4 years ago
Mass of 2.88x10^-4 mol of ascorbic acid
Lady bird [3.3K]
Molar mass C₆H₈O₆ = 176.12 g/mol

1 mole ------------------ 176.12 g
2.88x10⁻⁴ mole -------  ?

mass = 2.88x10⁻⁴ * 176.12 / 1

mass ≈ 0.05072 g

hope this helps!
8 0
3 years ago
Identify the power of ten that defines each of these prefixes. Input your answers as 10 x where x is the power of ten. nano- ___
Gemiola [76]

<u>Answer:</u> The quantity of every prefix is written below as a power of ten.

<u>Explanation:</u>

In the metric system of measurement, the name of multiples and subdivision of any unit is done by combining the name of the unit with the prefixes.

<u>For Example:</u> deka, hecto and kilo means 10, 100 and 1000 respectively. Deci, centi and milli means one-tenth, one-hundredth, and one-thousandth respectively.

The quantity of these prefixes are written as the power of 10.

For the given prefixes:

<u>Nano:</u>  The quantity will be 10^{-9}

<u>Kilo:</u>  The quantity will be 10^3

<u>Centi:</u>  The quantity will be 10^{-2}

<u>Micro:</u>  The quantity will be 10^{-6}

<u>Milli:</u>  The quantity will be 10^{-3}

<u>Mega:</u>  The quantity will be 10^6

Hence, the quantity of every prefix is written above as a power of ten.

7 0
4 years ago
The transfer of a section of DNA from one organism into the DNA of another organism by scientist is called
denpristay [2]
Transgenetics

hope this helps!
5 0
4 years ago
Given: There are 39.95 grams of Argon (39.95 g/1 mole) and one mole has a volume of 22.4 Liters (1 mole/22.4 L). What is the vol
marta [7]

Answer:

V_2=19.23L

Explanation:

Hello,

In this case, by using the Avogadro's law which allows us to understand the volume-moles behavior as a directly proportional relationship:

\frac{V_2}{n_2} =\frac{V_1}{n_1}

We can compute the volume of 34.3 g of argon by representing it in mole as shown below:

n_1=1 mol\\\\n_2=34.3g*\frac{1mol}{39.95g} =0.859mol

Thus, we find:

V_2=\frac{V_1*n_2}{n_1}=\frac{22.4L*0.859mol}{1mol} \\\\V_2=19.23L

Best regards.

6 0
3 years ago
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