If 5.0 grams of KCl is dissolved in 500 ml of water, the concentration of the resulting solution will be 0.134M.
<h3>How to calculate concentration?</h3>
The concentration of a solution can be calculated by using the following formula;
Molarity = no of moles ÷ volume
According to this question, 5.0 grams of KCl is dissolved in 500 ml of water. The concentration is calculated as follows:
no of moles of KCl = 5g ÷ 74.5g/mol = 0.067mol
Molarity = 0.067mol ÷ 0.5L = 0.134M
Therefore, if 5.0 grams of KCl is dissolved in 500 ml of water, the concentration of the resulting solution will be 0.134M.
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Si -Atomic number -14 -1s2 2s2 2p6 3s2 3p2 - 4 valence electrons
Answer:
I believe the answer would be C4H9O2.
Answer:
2Na + K₂S → 2K + Na₂S. "replacement reaction"
Explanation:
To balance the equation, you should apply the law of conservation of mass for the equations.
The law of conservation of mass states that the no. of each atom is equal in both sides (reactants and products).
So, the given equation is balanced as:
<em>2Na + K₂S → 2K + Na₂S.</em>
It is a replacement reaction that Na replace K in <em>K₂S.</em>
<em>That 2.0 moles of Na react with 1.0 mole K₂S to produce 2.0 of K and 1.0 mole of Na₂S.</em>
- The no. of all atoms is the same in both of reactants and products side.
<em>Na (2), K (2), and S (1).</em>
