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a_sh-v [17]
3 years ago
13

Please help i'll mark the brainlest

Chemistry
2 answers:
asambeis [7]3 years ago
6 0

Answer:

3

Explanation:

3 because it's the most scientific and specific, and it shows the independent and dependant variables

Nataly_w [17]3 years ago
5 0

Answer:

I believe your answer is C.

Explanation:

First of all, if you pay attention to the details of the question it states that scientific hypothesis should be specific and demonstrate the relationship between the independent and dependant variable.

Answer A - Does demonstrate the relationship between the independent and dependant variable. but it's not very specific. Thus it is Not the answer.

Answer B - is not specific or demonstrates the relationship between the independent and dependant variable. Thus it is Not the right answer.

Answer C - Fits the criteria as it is specific, and demonstrates the relationship between the independent and dependant variable. Thus it is the Right answer

Answer D - is in the same category as B so again is Not the right answer.

Therefore your only option is C. Your welcome, and have a wonderful day

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Hello!

datos:

Molarity = 2.0*10^{-4}\:M\:(mol/L)


ps: The ionization constant of the nitric acid is strong (100% ionized in water) or completely dissociates in water, so the pH will be:

pH = - log\:[H_3O^+]

pH = - log\:[2*10^{-4}]

pH = 4 - log\:2

pH = 4 - 0.30

\boxed{\boxed{pH = 3.70}}\end{array}}\qquad\checkmark

Note:. The pH <7, then we have an acidic solution.

I Hope this helps, greetings ... DexteR!

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2 mole of Sodium hydroxide reacts with 1 mole of Sulfuric acid

Explanation:

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NaOH + H₂SO₄ → Na₂SO₄ + H₂0

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Na atoms are balanced. There are 6 Oxygen atoms on the right and 5 on the left. Balance by increasing the H₂O moles:

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Check if H atoms are also balanced. They are. That means our final reaction is:

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\huge{\underbrace{\overbrace{\mathfrak{\pink{Answer:}}}}}

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