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Setler79 [48]
4 years ago
15

(34.969amu)(0.7577) = (36.966amu)(0.2423) = +

Chemistry
1 answer:
Monica [59]4 years ago
7 0

Answer:

26.4 960 for the first one

8.9569 for the second one

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A drop of vinegar ( a weak acid ) is placed on a sample of each of the materials below. Which will show the most active reaction
professor190 [17]

Answer: Option (B) is the correct answer.

Explanation:

Marble is also known as calcium carbonate and its chemical formula is CaCO_{3}.

When it combines with vinegar then it results in the formation of calcium acetate which is a water soluble compound along with the release of carbon dioxide which occurs in the form of bubbles and water.

The reaction is as follows.

    CaCO_{3} + CH_{3}COOH \rightarrow Ca(CH_{3}COOH)_{2} + H_{2}O + CO_{2}

Whereas vinegar being a weak acid will not react with glass, copper and steel.

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3 years ago
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diamong [38]

Hey the answer to your question is Option C

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Rama09 [41]

1.025 moles of NaCl are present in a solution with a molarity of 8.20M and 125 mL of solution. Details about molarity can be found below.

<h3>How to calculate molarity?</h3>

The number of moles of a solution can be calculated by multiplying the molarity of the solution by its volume. That is;

no of moles = molarity × volume

According to this question, a solution has a molarity of 8.20M and volume of 125 mL of solution.

no of moles = 8.20 × 0.125

no of moles = 1.025moles

Therefore, 1.025 moles of NaCl are present in a solution with a molarity of 8.20M and 125 mL of solution.

Learn more about number of moles at: brainly.com/question/14919968

#SPJ1

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2 years ago
A slow joggernruns a mile in 13min calculate the speed in inch/second
levacccp [35]
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3. How many moles of aluminum are needed to react completely with 1.2 mol of FeO?
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