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Anvisha [2.4K]
2 years ago
14

Which change is chemical?

Chemistry
1 answer:
Dmitry_Shevchenko [17]2 years ago
4 0

Answer:

D. water undergoing electrolysis

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Please help asap thank you.
Aleks [24]

Answer:

a)0.816g/l

b)0.241g/l

8 0
2 years ago
If an acid has a Ka of 4.3 × 10-7 and a base has a Kb of 5.6 × 10-4, then what will be true about the salt produced? A. The salt
blsea [12.9K]

If an acid has a Ka of 4.3 × 10-⁷ and a base has a Kb of 5.6 × 10-⁴, then the true statement about the salt produced is that the salt would decrease the pH of the solution.

<h3>What is acid and base constant?</h3>

An acid dissociation constant, Kₐ, is a quantitative measure of the strength of an acid in solution while Kb indicates the high level of dissociation of a strong base.

According to this question, an acid has a Ka of 4.3 × 10-⁷ and a base has a Kb of 5.6 × 10-⁴. This shows that the strength of the base is higher than that of the acid.

Therefore, if an acid has a Ka of 4.3 × 10-⁷ and a base has a Kb of 5.6 × 10-⁴, then the true statement about the salt produced is that the salt would decrease the pH of the solution.

Learn more about Ka at: brainly.com/question/16035742

#SPJ1

7 0
2 years ago
In the periodic table atoms are arranged from left to right and from top to bottom in which order
spin [16.1K]
<span>The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom inorder of increasing atomic number.


</span>
5 0
3 years ago
Which of the following is an example of ionic compound?
spayn [35]

What you are looking for is something from the left side of the periodic table (the metals), combined with something from the right side of the periodic table.

SiCl4 is something from the middle with something on the right. Not the answer.

HCl is a possible answer, but it is not the best one, because Hydrogen can be on both sides. It is not quite as willing to give up its electrons as the answer.

CCl4 has the same problem as A.

The answer is C

Ca is in column 2 just about as far left as you can get.

Cl is in column 17 which is just about as far right as you can get.

5 0
2 years ago
Which country has the largest deposit of coal? A. Azerbaijan B. Russia C. Armenia D. Georgia
vazorg [7]

Answer:

The answer is B. Russia

3 0
3 years ago
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