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UkoKoshka [18]
3 years ago
12

The following chemical equation is not balanced: Fe2O3 + H2SO4 Fe2(SO4)3 + H2O When this chemical equation is correctly balanced

, what is the coefficient of the water molecule?
Chemistry
2 answers:
Fed [463]3 years ago
7 0

Answer:

The Answer is C:3

Explanation:

Romashka-Z-Leto [24]3 years ago
4 0
Fe2O3 + 3H2SO4  -->  Fe2(SO4)3 + 6H2O
the coefficient is 6 as you can see
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I have 50.00 mL of 0.100 M ethyl amine (C2H5NH2). I gradually add a solution of 0.025 M nitric acid (HNO3) to the ethyl amine so
sergeinik [125]

Answer:

4.00 is the pH of the mixture

Explanation:

The ethyl amine reacts with HNO3 as follows:

C2H5NH2 + HNO3 → C2H5NH3⁺ + NO3⁻

To solve this question we need to find the moles of ethyl amine and the moles of HNO3:

<em>Moles C2H5NH2:</em>

0.0500L * (0.100mol/L) = 0.00500 moles ethyl amine

<em>Moles HNO3:</em>

0.201L * (0.025mol/L) = 0.005025 moles HNO3

That means HNO3 is in excess. The moles in excess are:

0.005025 moles HNO3 - 0.00500 moles ethyl amine =

2.5x10⁻⁵ moles HNO₃

In 50 + 201mL = 251mL = 0.251L:

2.5x10⁻⁵ moles HNO₃ / 0.251L = 9.96x10⁻⁵M = [H+]

As pH = -log [H+]

pH = -log 9.96x10⁻⁵M

pH = 4.00 is the pH of the mixture

6 0
2 years ago
Can you separate cooking oil from a mixture of cooking oil and water by filtering
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Yes, they can be separated by using a funnel. In the separating funnel, they are kept for resting. After they are separated they are filtered one by one.
3 0
2 years ago
A period is a horizontal row on the periodic table. <br> a. True<br> b. False
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6 0
3 years ago
The primary role of the carbonic-acid-bicarbonate buffer system is to
tekilochka [14]

Answer:

The primary role of the carbonic-acid-bicarbonate buffer system is to neutralize the hydronium ions forming carbonic acid and water when any acidic substance enter the bloodstream.

Explanation:

hope it helps.

4 0
3 years ago
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