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Archy [21]
4 years ago
15

PLEASE HELP ASAP! EXTRA POINTS!!! WILL MARK BRANIEST

Chemistry
1 answer:
Drupady [299]4 years ago
7 0
Cirrus: feathered clouds
Cumulus: fluffy white clouds, dense vertical clouds
Stratus: smooth gray clouds that cover the whole sky
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How many miles are in 8.73 *10^25 atoms of boron
Mnenie [13.5K]

The correct question is: How many moles are in 8.73 \times 10^{25} atoms of boron.

Answer: There are 145 moles present in 8.73 \times 10^{25} atoms of boron.

Explanation:

According to the mole concept, there are 6.022 \times 10^{23} atoms present in one mole of every substance.

Hence, number of moles present in 8.73 \times 10^{25} atoms is calculated as follows.

Moles = \frac{8.73 \times 10^{25}}{6.022 \times 10^{23}}\\= 1.45 \times 10^{2}\\= 145 mol

Thus, we can conclude that there are 145 moles present in 8.73 \times 10^{25} atoms of boron.

5 0
3 years ago
How does a thermometer work
andrew11 [14]
This liquid is sometimes colored alcohol but can also be a metallic liquid called mercury. Both mercury and alcohol grow bigger when heated and smaller when cooled. Inside the glass tube of a thermometer, the liquid has no place to go but up when the temperature is hot and down when the temperature is cold. Mercury is very reactive and works best. But mercury is also very a radioactive element. So, if you break the thermometer, you could get in trouble (radio active posoning) Alcohol work well, it is not radioactive and can't kill you.
Okay, hope I helped
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8 0
4 years ago
What kind of hydrocarbon is this? C-C-C-C-C-C-C-C-OH <br><br> Please help ASAP
Mice21 [21]

Answer:

1-Octanol

Explanation:

Count the amount of carbon atoms in the chain. Nomenclature includes the position of the largest functional group position in the molecule.

In this case the carbon chain has 8 carbon atoms and one hydroxide functional group (OH)  

1 (hydroxide is listed first in the carbon chain) - Oct(8 carbons) + anol (Alkanol hydrocarbon with a hydroxide group, use anol suffix )

=  1 - Octanol

7 0
3 years ago
Which of these solutions are basic at 25 °C? Solution A: [OH−]=3.13×10−7 M Solution C: [H3O+]=0.000747 M Solution B: [H3O+
solong [7]

Answer:

Are basic:

[OH⁻] = 3.13x10⁻⁷M and [H₃O⁺] = 9.55x10⁻⁹M

Explanation:

A solution is basic when pH = - log [H₃O⁺] is higher than 7.

It is possible to convert [OH⁻] to [H₃O⁺] using:

[H₃O⁺] = 1x10⁻¹⁴ / [OH⁻]

a. [OH⁻] = 3.13x10⁻⁷M

[H₃O⁺] = 1x10⁻¹⁴ / [3.13x10⁻⁷M]

[H₃O⁺] = 3.19x10⁻⁸M

pH = - log [H₃O⁺] = 7.50

[OH⁻] = 3.13x10⁻⁷M is basic

b. pH = -log [H₃O⁺] = - log 0.000747M = 3.13.

This solution is not basic

c. [H₃O⁺] = 9.55x10⁻⁹M

pH = 8.02

This solution is also basic.

8 0
3 years ago
How many atoms in the pictured molecule can form hydrogen bonds with water molecules anatomy?
garri49 [273]

55..............................

6 0
3 years ago
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