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Mashutka [201]
3 years ago
8

Which of the following is an example of a decomposition reaction?

Chemistry
1 answer:
Kruka [31]3 years ago
4 0
I’m pretty sure it’s B
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How is the outer core a liquid?
Nata [24]
The outer core is not under enough pressure to be a solid so it is liquid
3 0
4 years ago
Explain, in terms of electrons, why the compound containing calcium and chlorine is classified as an ionic compound.
Pavel [41]
Because the reaction occurs between a metal and non metal
CL=2,8,7
C
4 0
3 years ago
How many grams of AlCl3 can be prepared from 3.5 moles of HCl gas?
poizon [28]

Answer:

156 g of AlCl₃ will be produced from 3.5 moles of HCl.

Explanation:

Given data:

Number of moles of HCl = 3.5 mol

Grams of AlCl₃ produced = ?

Solution:

Balanced Chemical equation:

3HCl + Al(OH)₃   →  AlCl₃ + 3H₂O

Now we will compare the moles of AlCl₃  with HCl from balanced chemical equation.

                   HCl          :           AlCl₃

                     3            :              1

                   3.5           :           1/3×3.5 = 1.17 mol

Mass of  AlCl₃ produced:

Mass = number of moles ×molar mass

Mass = 1.17 mol ×   133.341 g/mol

Mass =  156 g

Thus 156 g of AlCl₃ will be produced from 3.5 moles of HCl.

4 0
3 years ago
What is the mass, in grams, of a sample of 7.83 × 1024 atoms of helium (He)? Show your work or explain the steps that you used t
timurjin [86]
First, we will get the number of moles:
one mole contains Avogadro's number of atoms. Therefore, to know the number of moles in <span>7.83 × 10^24 atoms, we will simply do cross multiplication as follows:
number of moles = (</span><span>7.83 × 10^24*1) / (6.022 * 10^23) = 13 moles

From the periodic table:
mass of one mole of helium = 4 grams
Therefore:
mass of 13 moles of helium = 13*4 = 52 grams</span>
7 0
4 years ago
How would you describe where this question is located on the page? Give two different answers using two different reference poin
Tatiana [17]

The question is located at the end of the page or it is located below the section "with a reference point".

<h3>What is a reference point?</h3>

As explained in the text, this is a known point or location used to describe the location of an object.

<h3>What is a reference point if you want to describe the location of the question on the page?</h3>

In this case, some of the reference points you can use include the other sections in the page or the page itself.

Based on this, two possible locations are:

  • The question is located at the end of the page (It uses the page as a reference point).
  • The question is located below the section "with a reference point" (it uses a section as a reference point).

Learn more about location in: brainly.com/question/13376711

6 0
2 years ago
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