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Iteru [2.4K]
2 years ago
15

Electrons orbit the nucleus like planets around the sun.​true or false?

Chemistry
2 answers:
zzz [600]2 years ago
8 0

Answer:

True

Explanation:

Someone DELETED my other answer

gogolik [260]2 years ago
7 0

Answer: true

Explanation: Electrons orbit the nucleus of an atom the way that planets revolve around the Sun. The electrons are like the planets in the solar system. The sun is like the nucleus in the solar system. The answer to the question is true.

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12.4 g of phosphorus reacts with 9.6 g of oxygen.
vaieri [72.5K]

Answer:

D 4P +3O₂ → 2 P₂O₃

Explanation:

In this problem, we need to convert the mass of phosphorus and oxygen to moles trying to find the ratio of reaction (The moles of P that reacts per mole of O₂):

<em>Moles P:</em>

12.4g P * (1mol P / 31g) = 0.4 moles

<em>Moles O₂:</em>

9.6g * (1mol / 32g) = 0.3 moles

The ratio of reaction is:

0.4 mol / 0.3 mol = 1.33 = 4 moles of P / 3 moles of O₂

That means 4 moles of P react with 3 moles of O₂ and the reaction that represents this ratio is:

<h3>D 4P +3O₂ → 2 P₂O₃</h3>

7 0
2 years ago
When electrons in a molecule are not found between a pair of atoms but move throughout the molecule, this is called Group of ans
vazorg [7]

Answer:

delocalised electrons

Explanation:

they are called delocalised electrons because that can move freely in the molecule

5 0
2 years ago
Which of the following determines the type of tree species found in a temperate broadleaf forest? (Select all that apply.)
Sunny_sXe [5.5K]

Answer: A B C

Explanation: chapter 34-45 pdf

3 0
2 years ago
What is the mass of HF produced by three reaction of 3.0 10 to the 23 molecules of H2 with excess F2
JulijaS [17]

Answer:

It is 20. g HF

Explanation:

H2 + F2 ==> 2HF  ...  balanced equation

Since the question is asking us to find the mass of product formed, we will want to first convert the molecules of H2 into moles of H2 (we could do this at the end of the calculations, but it's just as easy to do it now).

moles of H2 present (using Avogadro's number):  

3.0x1023 molecules H2 x 1 mole H2/6.02x1023 molecules = 0.498 moles H2

From the balanced equation, we see that 1 mole H2 produces 2 moles HF.  Therefore, we can now find the theoretical mass of HF produced from 0.498 moles H2:

0.498 moles H2 x 2 moles HF/1 mol H2 = 0.996 moles HF formed.

The molar mass of HF = 20.01 g/mole, thus...

0.996 moles HF x 20.01 g/mole = 19.93 g HF = 20. g HF formed (to 2 significant figures)

6 0
2 years ago
Write the name for: Mg3O2
sveticcg [70]

Answer:

you sure it is the right sign your using

4 0
2 years ago
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