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horsena [70]
2 years ago
14

How many electrons must you add to Boron-10 to create a neutral atom? How many electrons must you add to Boron-11 to create a ne

utral atom? Why?
Chemistry
1 answer:
ludmilkaskok [199]2 years ago
8 0

Answer:

What make Boron Boron is that it has 5 protons, and will therefor have 5 electrons in the unionized state. While I was looking this up I learned that there are two stable isotopes, Boron 10 with five neutrons, and boron 11 with six. The more common is boron 11, which is 80.1% of naturally occuring boron.

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Which of the following electron transitions would be associated with the lowest energy of emitted light? HELP
mezya [45]

Answer:

F.

Hope it's helpful to you

4 0
3 years ago
both sides in the war used military observers in hydrogen-filled balloons to watch the enemy's movements
lesya692 [45]

Answer:

Yes.

Explanation:

Hydrogen-filled balloons were widely used by the militaries during World War I (1914–1918). The main purpose of these hydrogen-filled balloons to detect movements of enemy troops and to provide direction to the artillery fire. Balloons were the targets of opposing aircraft because they knew the purpose of these balloons so they hit it whenever seen by the enemies so we can say that both sides used hydrogen-filled balloons as military observer to watch the enemy's movements.

7 0
3 years ago
HELP a #QUEEN out pls??
Anastaziya [24]

Answer:

what the acctual fhuck typa chinese algorithim is dis, youve got me bamboozled frffr

Explanation:

jk jk.........

__5___SiO2 + ___2___CaC2 → __5___Si + ____2___CaO + __4___CO2

4 0
3 years ago
Select all that apply to organic compounds. Organic compounds are only found in living things. Organic compounds can be synthesi
Andreyy89

Answer:

Correct options:

Organic compounds can be synthesized in a laboratory setting.

There are hundreds of thousands of organic compounds.

Explanation:

1) Organic compounds are only found in living things: False

Organic compounds are mainly carbon based. Although organic compounds are derived from living things like plants and animals, non-living things like sedimentary rocks are also rich in carbon.

2) Organic compounds can be synthesized in a laboratory setting: True

There are four major categories of organic compounds: carbohydrates, proteins, lipids and nucleic acids all of which can be synthesized in a laboratory.

3) Organic compounds contain carbon: False

Organic compounds are identified by the presence of both carbon and hydrogen (and sometimes other elements like O, N, S).

4)CO2 is an organic compound: False

There are no H atoms, hence CO2 is not organic.

5) There are hundreds of thousands of organic compounds: True

7 0
3 years ago
Read 2 more answers
What is the density of an object having a mass of 4.000 g and a volume of 39.0 cubic centimeters?
Vika [28.1K]

Answer:

The answer is

<h2>0.103 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}

From the question

mass = 4 g

volume = 39.0 mL

The density is

density =  \frac{4}{39}  \\  = 0.102564102564...

We have the final answer as

<h3>0.103 g/mL</h3>

Hope this helps you

6 0
4 years ago
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