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Sophie [7]
2 years ago
11

Balance this equation _Al +_HCI --> _H2 +_AICIz

Chemistry
1 answer:
kumpel [21]2 years ago
5 0

2Al+6HCl⇒3H₂+2AlCl₃

<h3>Further explanation </h3>

Equalization of chemical reaction equations can be done using variables. Steps in equalizing the reaction equation:  

• 1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c etc.  

• 2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index between reactant and product  

• 3. Select the coefficient of the substance with the most complex chemical formula equal to 1  

Reaction

Al+HCl⇒H₂+AlCl₃

  • Give coefficient

aAl+bHCl⇒cH₂+AlCl₃

  • Make equation

Al, left=a, right=1⇒a=1

Cl, left=b, right=3⇒b=3

H, left=b, right=2c⇒b=2c⇒3=2c⇒c=3/2

the equation becomes :

Al+3HCl⇒3/2H₂+AlCl₃ x2

2Al+6HCl⇒3H₂+2AlCl₃

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In the presence of oxygen, the three-carbon compound pyruvate can be catabolized in the citric acid cycle. First, however, the p
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Answer:1.

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6 0
3 years ago
If wind is eroding an area at a rate of 2 mm per year and depositing it in a smaller area at a rate of 7 mm per year, how much l
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Answer:

After 2000 years, the first after will be 4m lower.

After 2000 years, the second area will be 14m higher.

Explanation:

From the given information:

At the first area:

if the wind is eroding at 2 mm/year, then after 2000 years; we have:

2 mm/year × 2000 year = 4000 mm

4000 mm to meters, we have:

=4000 \ mm \times \dfrac{1 \ m}{ 1000 \ mm}

= 4 m lower

At the second smaller area:

Given that the wind is depositing it at the rate of 7 mm per year;

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7 mm/year × 2000 year = 14000 mm

=14000 \ mm \times \dfrac{1 \ m}{ 1000 \ mm}

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6 0
3 years ago
In which of the following sets do all species have the same number of protons?
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Among the given options, Option (D) that is O, O^2^-,O^2^+  will have the same number of protons. Hence option (D) is correct.

<h3>What are protons ?</h3>

A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron.

In option (D), All the three species (O, O^2^-,O^2^+ ) bears 8 protons but the number of electrons varies.

In any Ion, there will be no change in number of protons among the same atoms but number of electrons varies.

Therefore, Option (D)  has same atoms but different ions.

Hence, it has same number of protons. Thus the correct answer is option (D)

Learn more about Protons here ;

brainly.com/question/12535409

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5 0
2 years ago
a 45 gram marble is dropped into a graduated cylinder with 30ml of water. The water level increases to 45.0 ml. What is the dens
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Answer:

<h2>3 g/mL</h2>

Explanation:

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

density =  \frac{mass}{volume}\\

From the question we have

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density =  \frac{45}{15}  = 3 \\

We have the final answer as

<h3>3 g/mL</h3>

Hope this helps you

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