2 years ago

How do you unlock a post test on edmentum?

1 answer:

8 0

Explanation:

A post-test or a mastery test can be unlocked if the learner who has the of it previously can complete the given tutorial with the test.

After the tutorial with the test, the learner will have to complete everything and if he passes the test with a completed answer then he will see that the Mastery Test has been unlocked. Also after the mastery test is unlocked it can be done again.

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You have 54.32 grams of PbCl4. How many moles of PbCl4 do you have?

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Which plastic do you think could best contain extremely corrosive material? PETE, LDPE, PVC, PS, PP, or HDPE.

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Why is the formation of ionic compounds exothermic?

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3 years ago

In which of the following are the pH values arranged from the most basic to the most acidic?

MAVERICK [17]

Answer:

The correct answer is : 14, 10, 7, 4, 3, 1

Explanation:

The pH of the solution is a negative logarithm of the hydronium ion's concentrations present in a aqueous solution.The pH scale ranges from 0 to 14.

Mathematically written as:

$pH=-\log[H_3O^+]$

Higher the value of pH more alkaline will be the solution.
Lower the value of pH more acidic will be the solution.
The solution with pH value 7 is termed as neutral solution.

So, from the given options of pH arranged from most basic to most acidic will be the decreasing order from 14 to 1 :

14, 10, 7, 4, 3, 1

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2 years ago