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Mkey [24]
3 years ago
8

Neeru is looking at her kids backpack and wants to compare their masses. What is the best tool Neeru can use to find the mass of

each backpack?
A) graduated cylinder
B) balance
C) ruler
D) beaker
Chemistry
1 answer:
lisov135 [29]3 years ago
3 0
B would be the best to measure mass
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Molecules in a liquid have less force of attraction as compared to solids. But liquid molecules have more force of attraction as compared to gases.

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Which of the following is a chemical change?
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0.500 mile of potassium oxide is dissolved in enough water to make 2.00 L of solution. Calculate the molarity of this solution (
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The correct question is as follows: 0.500 moles of potassium oxide is dissolved in enough water to make 2.00 L of solution. Calculate the molarity of this solution (plz help!)

Answer: The molarity of this solution is 0.25 M.

Explanation:

Molarity is the number of moles of a substance divided by volume in liter.

As it is given that there are 0.5 moles of potassium oxide in 2.00 L of water so, the molarity of this solution is calculated as follows.

Molarity = \frac{moles}{volume(in L)}\\= \frac{0.5 moles}{2.00 L}\\= 0.25 M

Thus, we can conclude that molarity of this solution is 0.25 M.

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2 years ago
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