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GaryK [48]
3 years ago
14

When an acid solution exactly neutralizes a base

Chemistry
1 answer:
o-na [289]3 years ago
7 0

Answer:a weak acid and a weak base

Explanation:

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What is the molality of a solution that contains 1.34 moles of NaCl in 2.47 kg of solvent
dsp73

The molality is 0.54 M when 1.34 moles of NaCl is present in 2.47 kg of solvent.

<u>Explanation:</u>

Molality is the measure of how much of amount of solute is dissolved in the solvent. So it is calculated as the ratio of moles of solute to the grams of solvent.

         \text {Molality}=\frac{\text {Moles of solute}}{\text {Mass of solvent}}

As in this case, the solute is NaCl and solvent is unknown. So the moles of solute is given as 1.34 moles and the mass of solvent is given as 2.47 kg.

Hence, \text { molality }=\frac{1.34}{2.47}= 0.54 \mathrm{M}

Thus, the molality is 0.54 M when 1.34 moles of NaCl is present in 2.47 kg of solvent.

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3 years ago
The identity of an element is defined by its number of _______________. For example, every atom of Carbon has ___ protons and on
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In this order.
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3 years ago
What is the H+ concentration when pH is 2, 6, 7, 8, and 12?
Mariulka [41]

Answer:

See below.

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pH = - log (H+)

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I'm sorry but I'm not sure about what the other units mean, so Im not sure of the answer to those.

If you convert the other units to the form  1 x 10^-n  then the pH will be n.

6 0
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Coal containing 15.0% H2O, 2.0% S and 83.0% C by mass is burnt with the stoichiometric amount of air in a furnace. What is the m
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Answer:

This is a coal combustion process and we will assume

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Initial moles n  of S = 2/32 = 0.0625kmols

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That is 1 mole of S reacts with 1 mole of O₂ to give 1 mole of SO₂

Then, it means for 0.0625 kmoles of S, we will have 0.0625 kmole of SO2 coming out of the exhaust

The mole fraction of SO2(g) in the exhaust=0.0625kmols

Explanation:

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2 years ago
Radio station broadcast signals two different frequency bands. These are Called ?
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I  think it is AM and frequency

Explanation:

Sorry if i'm wrong ;)

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