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9966 [12]
3 years ago
12

Calculate the number of molecules in 64.5 grams of Nitrogen monoxide, NO

Chemistry
1 answer:
Alinara [238K]3 years ago
7 0

Answer:

N=9.933×10^23

Explanation:

n =  \frac{m}{mr}

N=n×la

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Explanation:

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an unknown sample required 21.05 mL of 0.02047 M KmnO4 to reach the end point. How many moles of KmnO4 reacted?
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Suppose there are two known compounds containing the generic elements X and Y. You have a 1.00-g sample of each compound. One sa
Lapatulllka [165]

I think the correct answers are X2Y and X3Y, X2Y5 and X3Y5, and X4Y2 and X3Y, for the following reason: 

If you look at the combining masses of X and Y in each of the two compounds, 

The first compound contains 0.25g of X combined with 0.75g of Y 
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Now, you suppose to prepare each of these two compounds, starting with the same fixed mass of element Y ( I will choose 12g of Y for an easy calculation!) 

The first compound will then contain 4g of X and 12g of Y 
The second compound will then contain 6g of X and 12g of Y 

<span>The ratio which combined the masses of X and the fixed mass (12g) of Y
= 4 : 6 
<span>or 2 : 3 </span>

So, the ratio of MOLES of X which combined with the fixed amount of Y in the two compounds is also = 2 : 3 </span>

The two compounds given with the plausible formula must therefore contain the same ratio.

8 0
2 years ago
What is aluminum is chemistry
spayn [35]

Answer:

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Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

The correct statement should be the below:

Research suggests that the health benefits of phytochemicals are most prevalent when phytochemicals are consumed in dietary <span>supplement form.</span>
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3 years ago
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