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lesya [120]
3 years ago
14

What is the invisible line on earth

Chemistry
1 answer:
rjkz [21]3 years ago
8 0
The invisible line on Earth is the equator
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When aluminum, AlAl, metal is dipped in an aqueous solution of hydrochloric acid, HClHCl, hydrogen gas, H2H2, is produced with t
kifflom [539]

Answer:

Balanced equation: 2Al(s)+6HCl(aq.)\rightarrow 2AlCl_{3}(aq.)+3H_{2}(g)

Explanation:

  • Al is an metallic species with a standard reduction potential of -1.66 V( E_{Al^{3+}\mid Al}^{0}=-1.66V).
  • H_{2} is present at the intermediate position in electrochemical series with a standard reduction potential of 0 V (E_{H^{+}\mid H_{2}}^{0}=0V).
  • So, when Al is dipped in aqueous solution of HCl, Al is readily oxidized to produce Al^{3+} whereas H^{+} is reduced to H_{2} .
  • Hence, as a whole, aqueous AlCl_{3} and gaseous H_{2} is produced as products.

Balanced equation: 2Al(s)+6HCl(aq.)\rightarrow 2AlCl_{3}(aq.)+3H_{2}(g)

5 0
4 years ago
Correct answer. 9. The mass number of an element is the number of? ​
Elis [28]

Answer:

The mass number is defined as the total number of protons and neutrons in an atom. The number of neutrons = mass number − atomic number.

4 0
3 years ago
What compound do the ions Al3+ and O2- form
Mars2501 [29]
Hey 

the answer is going to be 

AL3<span> plus and </span>O2<span> negative will </span>form<span> Aluminum Oxide. It has manynames such as corundum and alumina. It is an amphoteric oxide.</span>
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3 years ago
PLEASE I NEED THIS ANSWERED ASAP
kherson [118]
The answer would be: 
A. Cancel out CO because it appears as a reactant in one intermediate reaction and a product in the other intermediate reaction.

In this question, there are two half-reaction equations. To merge them up, you need to add the reactant with the reactant, then the product with the product. If there is a molecule on both side, you can cancel them. The full reaction would be:

C+ 1/2 O2 + CO + 1/2O2 ==>CO+ CO2       -----> remove CO from both side
C+ O2 ==>CO2
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4 years ago
What must you determine first when solving a word rproblem?
SashulF [63]
Words that includes names, places, geometric shapes and finally units of measure.
 
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