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Harrizon [31]
4 years ago
7

What is the equilibrium constant expression for dissolving calcium carbonate in water?

Chemistry
1 answer:
Over [174]4 years ago
6 0
Equation for dissolving calcium carbonate in water:
<span>CaCO3(s) </span>⇄ Ca²⁺(aq) + CO₃²⁻(aq).
The equilibrium constant expression for this reaction: K = [Ca²⁺] [CO₃²⁻] / [CaCO3(s)], but concentration of CaCO3(s) is 1 (for all solid), so  <span>the simpler expression for the equilibrium </span>constant is:K = [Ca²⁺] [CO₃²⁻].

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If you have 3 moles of FeCl3, how many moles of MgCl2 can be produced? FeCl3 + Mg --&gt; MgCl2 + Fe
oksian1 [2.3K]

Answer: 154.09 g

Explanation:

3 Mg + 2 FeCl3 = 3 MgCl2 + 2 Fe

The mass of MgCl2 produced is calculated:

m MgCl2 = 175 g FeCl3 * (1 mol FeCl3 / 162.2 g) * (3 mol MgCl2 / 2 mol FeCl3) * (95.21 g MgCl2 / 1 mol) = 154.09 g

5 0
3 years ago
Which of these household items is powered by alternating current?
AlladinOne [14]

Answer:

C. Hair dryer

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What is the frequency of a wave where 3 wavelenths pass 1 second​
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3 years ago
What is a good title for this chart?
Elina [12.6K]

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Answer:

1.0 M is the concentration of hydrochloric acid.

Explanation:

HCl (aq) + NaOH (aq) \rightarrow H_2O (l) + NaCl (aq)

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n_1M_1V_1=n_2M_2V_2

where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of acid which is HCl

n_2,M_2\text{ and }V_2 are the n-factor, molarity and volume of base which is NaOH.

We are given:

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Putting values in above equation, we get:

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1.0 M is the concentration of hydrochloric acid.

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