Which of the following statements is true about neutrons?

Chemistry

1 answer:

luda_lava [24]3 years ago

5 0

Answer:

Explanation:

Protons are positive

Neutrons are neutral

Electrons are negative

Protons and Neutrons are in the nucleus

Electrons are orbiting around the nucleus

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2 years ago

What is the approximate value of the equilibrium constant, k n, for the neutralization of acetic acid withsodium hydroxide, show

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You are given the neutralization of acetic acid with sodium hydroxide. Also, you are given the k for acetic acid, which is 1.8 x 10⁻⁵. You are asked to find the<span> approximate value of the equilibrium constant, kn, for the neutralization. We will have a reaction of both acetic acid and sodium hydroxide.

CH</span>₃COOH + NaOH → CH₃COONa + H₂O
which comes from
CH₃COOH → CH₃COO⁻ + H⁺
H⁺ + OH⁻ → H₂O<span>

</span>The k for water is always 1.0 x 10¹⁴. The Ksp for the reaction will be
<span>
Ksp = [</span>CH₃COOH][H₂O]
Ksp = (1.8 x 10⁻⁵)(1.0 x 10¹⁴)
<span>Ksp = 1.8 x 10</span>⁹

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3 years ago

Read temprature on thermometer i am confusion

balu736 [363]

Answer:

a)22.2°C after adding magnesium

b)17.3°C before adding magnesium

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Liquid water can be separated into hydrogen gas and oxygen gas through electrolysis. The hydrogen and oxygen gases, H2 and O2, p

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Explanation:

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3 years ago

Calculate the pH of a buffer solution created by reacting 100 mL of 0.1 M NH3 with 90 mL of 0.1 M HNO3. (Remember, you can find

algol13

This question is asking for the pH of a buffer solution between ammonia and nitric acid, with given volumes and concentrations. At the end, the result turns out to be 10.488.

<h3>Buffers</h3>

In chemistry, buffers are known as substances attempting to hold a relatively constant pH by mixing and acid and a base (weak and strong). In such a way, for the substances given, the first step will be to calculate the consumed moles as they are mixed:

$n_{NH_3}=0.1L*0.1mol/L=0.01mol\\\\n_{HNO_3}=0.09L*0.1mol/L=0.009mol$

Now, since ammonia is in a greater proportion, one can calculate how much of it is left after being consumed by the nitric acid:

$n_{NH_3}^{left}=0.01mol-0.009mol=0.001mol$