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marusya05 [52]
4 years ago
6

Which statement about the relationship between laws, hypotheses, and theories is true?

Chemistry
2 answers:
ludmilkaskok [199]4 years ago
8 0
If a hypothesis is not contradicted after a lot of testing it may be considered a law
Ira Lisetskai [31]4 years ago
7 0
<h3><u>Answer;</u></h3>

D. If a hypothesis is not contradicted after a lot of testing, it may be considered a law.

<h3><u>Explanation;</u></h3>
  • A hypothesis is a reasonable guess  that is based on what is observed on the natural world.
  • A scientific theory is an in-depth explanation about an observed phenomenon. It contains one or more hypothesis that have been supported by repeated testing.
  • A law on the other hand is a statement about an observed phenomenon or a unifying concept.
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3 years ago
calculate the number of moles of sulfuric acid that is contained in 250 mL of 8.500 M sulfuric acid solution
san4es73 [151]

Answer : The moles of H_2SO_4 are, 2.125 mole.

Explanation : Given,

Molarity of H_2SO_4 = 8.500 M

Volume of solution = 250 mL  = 0.250 L    (1 L = 1000 mL)

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

\text{Molarity}=\frac{\text{Moles of }H_2SO_4}{\text{Volume of solution (in L)}}

Now put all the given values in this formula, we get:

8.500M=\frac{\text{Moles of }H_2SO_4}{0.250L}

\text{Moles of }H_2SO_4=2.125mol

Therefore, the moles of H_2SO_4 are, 2.125 mole.

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Why do A and T (and G and C) pair in a DNA double helix?
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What does the space-filling model of a water molecule tell you about the relative size of the atoms?
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