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blondinia [14]
3 years ago
13

I might honestly fail miserably on my chemistry final tomorrow. Would anyone be able to give some last-minute advice?

Chemistry
1 answer:
Art [367]3 years ago
4 0
Just do the best you can. That’s all that matters in the end!
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Which statement correctly explains whether or not this equation is a balanced equation?
Pavel [41]
The equation is balanced because the reactants are same as its products. so answer is B.
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4 years ago
What is chemical nitrogen​
Alika [10]

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4 0
3 years ago
List 3 ways to increase the solubility of a liquid
Semenov [28]

Answer:

Three ways I can come up with are increasing the temperature, increased the amount of solvent, and using a solvent with similar polarity as the solute.

Explanation:

5 0
3 years ago
Calculate the molarity when 135 g of KCl is dissolved to make a 2.50 L solution. Round to two significant digits.
inysia [295]
<h2>0.72 mol/L</h2>

Explanation:

       \textrm{Molarity of a solution}=\frac{\textrm{Number of moles of solvent}}{\textrm{Volume of solution in Liters}}

       We are given a 2.50L solution which contains 135g of KCl.

       To calculate number of moles of KCl present, we need to find it's molar mass from charts. Molar Mass of KCl is known to be 74.55\frac{g}{Mol}.

       Number of moles of KCl present = \frac{\textrm{Given weight}}{\textrm{Molar Mass}}\textrm{ = }\frac{135g}{74.55\frac{g}{Mol}}\textrm{ = }1.81087mol

       Molarity = \frac{1.81087mol}{2.50L}=0.7243\frac{mol}{L}

∴ Molarity of given KCl solution = 0.72\frac{mol}{L}

7 0
3 years ago
Which of the following would be a qualitative observation? A The volume of the solution is 25 ml B The solution turned blue C Th
mariarad [96]
B

A qualitative observation describes the characteristics of a substance without quantifying them.
3 0
4 years ago
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