A student is preparing 0.5 L of a 0.1 M magnesium chloride solution. The student uses the following steps to get started. Step 1: Gather a graduated cylinder, balance, and stirring rod. Step 2: Calculate the number of moles of magnesium chloride needed. Step 3: Add enough water to reach the 0.5 L mark of magnesium chloride solution and stir until dissolved. Step 4: Label the solution 0.1 M MgCl2. The process as described is incomplete. What would fix the process so that it is accurate? A The student made a mistake in Step 1 by getting a graduated cylinder. The student should have gotten a beaker. B The student made a mistake in Step 2 by only calculating the moles of magnesium chloride. The grams should also be calculated to make the solution. C The student made a mistake in Step 3 by adding enough water to reach 0.5 L mark of solution. Exactly 0.5 L of water should have been added. D The student make a mistake in Step 4 by labeling the solution 0.1 M MgCl2. It should be 0.1 g MgCl2.
A student is preparing 0.5 L of a 0.1 M magnesium chloride solution. The student uses the following steps to get started.
Step 1: Gather a graduated cylinder, balance, and stirring rod.
Step 2: Calculate the number of moles of magnesium chloride needed.
Step 3: Add enough water to reach the 0.5 L mark of magnesium chloride solution and stir until dissolved.
Step 4: Label the solution 0.1 M MgCl2.
The process as described is incomplete. What would fix the process so that it is accurate?
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A
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The student made a mistake in Step 1 by getting a graduated cylinder. The student should have gotten a beaker. |
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B
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The student made a mistake in Step 2 by only calculating the moles of magnesium chloride. The grams should also be calculated to make the solution. |
|
C
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The student made a mistake in Step 3 by adding enough water to reach 0.5 L mark of solution. Exactly 0.5 L of water should have been added. |
|
D
|
The student make a mistake in Step 4 by labeling the solution 0.1 M MgCl2. It should be 0.1 g MgCl2. |
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