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Scorpion4ik [409]
3 years ago
6

A chemist adds two substances together in a beaker. When he combines the substances, a solid substance is formed. He filters the

solid substance and measures its mass on an electronic balance. When the chemist measures the mass of the substance, he is A. collecting relevant data. B. devising a hypothesis. C. making a prediction. D. drawing a conclusion.
Chemistry
1 answer:
aliya0001 [1]3 years ago
7 0

Answer:

collecting relevant data

Explanation:

got this answer from another website ;)

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Answer: The general formulae for moles is n=m/mr so now we have being given to find the mass so all we have to do is to change subject

Explanation:  so we have to change subject in this question to m= n× mr . so in the question below we have being given the mole as 1.5mol/dm³  so all we have to do is to find the molecular relative mass(mr) .

to find the molecular relative mass of sodium hydroxide (NAOH) we add all of the atomic masses of all the atoms present so here we have sodium oxygen and hydrogen atoms present.

NA=23 O=16 H=1 so we add 23+16+1=40 so 40 is our molecular relative mass

now we fix it in our formulae which is m=n× mr

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HOPE THIS HELPS!!!! if i made a mistake our MAY answer may be wrong feel free to comment

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