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Amanda [17]
3 years ago
10

So i have a science question i need help with: Explain why it is a good practice to leave a hot beaker to cool before washing un

der running tap water.
Chemistry
1 answer:
Ronch [10]3 years ago
6 0
If you do not let the pot cool, it could mold when it goes into the cold water, and end up dented
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When 8.0 grams of sodium hydroxide is dissolved in sufficient water to make 400. mL of solution, what is the concentration of th
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Answer:

The concentration of this sodiumhydroxide solutions is 0.50 M

Explanation:

Step 1: Data given

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Volume water = 400 mL  = 0.400 L

Step 2: Calculate moles NaOH

Moles NaOH = mass NaOH / molar mass NaOH

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Moles NaOh = 0.20 moles

Step 3: Calculate concentration of the solution

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Concentration solution = 0.50 M

The concentration of this sodiumhydroxide solutions is 0.50 M

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