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grandymaker [24]
3 years ago
11

Thread-like structures that are found in the nucleus of a cell that contains all DNA.

Chemistry
1 answer:
lbvjy [14]3 years ago
5 0
I think the awnser is C chromosomes
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What is the number of valence electrons that most atoms prefer?
Nataly_w [17]

Answer: 8 electrons

Explanation: Valence electrons are the electrons in the outermost shell of an atom and they are important in chemical reactions.

Atoms are <em>happy</em> when they follow the octet rule which states that 2 electrons can go in the first shell and 8 electrons can go in the other shells.

Electrons are happy when they have a full outer shell which usually needs to be 8 electrons. However, some of the smaller elements like helium are happy because they can hold a max of 2 electrons and helium has 2 electrons since it has 2 protons in its core as well as 2 electrons in its energy levels.

4 0
3 years ago
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What is a metalloid?
Veronika [31]
an element whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.
8 0
3 years ago
Calculate the molarity of the solution formed when 0.72 moles of CaBr2 is dissolved in 1.50 L water.
xxTIMURxx [149]

Answer:

The molarity of the formed CaBr2 solution is 0.48 M

Explanation:

Step 1: Data given

Number of moles CaBr2 = 0.72 moles

Volume of water = 1.50 L

Step 2: Calculate the molarity of the solution

Molarity of CaBr2 solution = moles CaBr2 / volume water

Molarity of CaBr2 solution = 0.72 moles / 1.50 L

Molarity of CaBr2 solution = 0.48 mol / = 0.48 M

The molarity of the formed CaBr2 solution is 0.48 M

4 0
2 years ago
Which is the best definition of a solution?
hichkok12 [17]
C. A solution is any two liquids mixed.<span />
8 0
2 years ago
Energy comes in different forms.
LenKa [72]

Answer:

liquid, solid, and gas

Explanation: It depends where the molecules are moving. When a solid the molecules are vibrating and are all together, compact, the molecules are also very slow. When a liquid the molecules are moving back and forth, up and down, and are less compact, but moving faster. When a gas, the molecules move everywhere very quickly, moving super fast.

3 0
2 years ago
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