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kap26 [50]
3 years ago
13

Mario believes he has found the reason that some things glow in the dark while others do not. What is the most important thing h

e will need to do before his theory will be accepted by other scientists?
A. Create a petition and ask everyone who believes in his theory to sign it.

B. Develop an on-line survey so people can vote on the accuracy of his theory.

C. Write a book promoting his theory.

D. Develop tests and experiments that can be repeated to prove his theory.
Chemistry
2 answers:
Advocard [28]3 years ago
6 0

It’s D. velocity test and experiment that can be repeated to prove his theory

Citrus2011 [14]3 years ago
4 0

the answer is d, cuz i just did it rn on my study island and i got it right :)

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If the gram-formula mass of substance X is 180 g/mol, determine the molarity of the solution at Point E
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<h3><u>Answer;</u></h3>

<u>= 5 M or 5 moles/liter</u>

<h3><u>Explanation;</u></h3>

At point E, 90 g of substances X are dissolved in 100 g of the solvent.

100g of the solvent is equal to 100 ml

Molarity is the number of moles of a substance in one liter of a solvent.

90 g of X are in 100 ml

But; the RFM of X = 180 g/l

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Therefore;

0.5 moles of X are contained in 100 ml of the solvent;

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