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Zigmanuir [339]
3 years ago
8

How many moles of MgCL2 are there in 311 g of the compound

Chemistry
1 answer:
Volgvan3 years ago
5 0
There are 3.2664292991356043 moles of MgCl2
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A group of students is investigating how the addition of salt impacts the floatation of an egg in water. Four identical cups wer
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Answer: The correct answer is Option 1.

Explanation:

Control group is the group used in the experiment by the researchers in which no change in the variable is done. It is then set as a benchmark for the groups which are being tested.

We are given 4 groups which are being experimented for the flotation of an egg in water. As in Cup 1, there is no addition of salt and hence there is no change in the variables. So, this is set as a benchmark fro the cups which are further used in the experiment conducted.

Hence, the correct answer is Option 1.

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3 years ago
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Answer:

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The indicator methyl red has different molecular structures at high and low pH.
Novosadov [1.4K]

Answer:

a. True

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Methyl red is an indicator widely used in quality control of oxides as Zinc oxide in the titration with sulfuric acid.

As is used in titrations of acid-base reactions the indicator change in colour. Is red when the pH < 4.4 (Acidic Solutions) and is yellow when pH > 6.2 (Neutral-Basic solutions).

A change in colour means the structure of the indicator is changing with pH. Thus, the answer is:

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3 years ago
If an element has a mass number of 222 and an atomic number of 86, how
svlad2 [7]

Answer:

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