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laila [671]
4 years ago
12

How many grams nh3 are equivalent to 9.3 x 1023 molecules nh3?

Chemistry
1 answer:
ICE Princess25 [194]4 years ago
4 0

To solve this, we need the Avogadros number to convert to moles then multiply with molar mass to convert to mass in grams.

 

moles = 9.3 x 10^23 molecules * (1 mol / 6.022 x 10^23 molecules)

moles = 1.54 moles

 

Molar mass of NH3 is 17 g/mol:

mass = 1.54 moles * 17 g/mol

<span>mass = 26.25 g</span>

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Will the calculated Molarity of NaOH be too high or too low or unaffected if the following happen: when you answer the question,
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Explanation:

The result will be affected.

The mass of KHP  weighed out was used to calculate the moles of KHP weighed out (moles = mass/molar mass).

Not all the sample is actually KHP if the KHP is a little moist, so when mass was used to determine the moles of KHP, a higher number of moles than what is actually present would be obtained (because some of that mass was not KHP but it was assumed to be so. Therefore, there is actually a less present number of moles than the certain number that was thought of.

During the titration, NaOH reacts in a 1:1 ratio with KHP. So it was determined that there was the same number of moles of NaOH was the volume used as there were KHP in the mass that was weighed out. Since there was an overestimation in the moles of KHP, then there also would be an overestimation in the number of moles of NaOH.

Thus, NaOH will appear at a higher concentration than it actually is.

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4 years ago
In terms of valence electrons, explain why metals form positive ions.
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Answer:

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42.4 ml is the volume in milliliters of the lead ball if a lead ball is added to a graduated cylinder containing 50.6 ml of water.

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Learn more about the graduated cylinder  here:

brainly.com/question/13386106

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