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Mnenie [13.5K]
3 years ago
10

I need help on #2 a and b. please explain steps and answer

Chemistry
1 answer:
shtirl [24]3 years ago
8 0
Hope this helps you.

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All of them are compounds.
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What is the percent error if the measured value is 30.0 g and<br> the accepted value is 32.0 g?
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Why do you think it would be important for scientists to test local water?
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To see if the water is safe to drink.

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The product(s) of a heated reaction of N-ethyl-N-methylpentanamide with sodium hydroxide would be __________. The product(s) of
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2 years ago
How many hydrogen moles are in 2.5 moles of aspartame c14h18n2o5
STALIN [3.7K]
Firstly, we need to convert 3g aspartame into moles aspartame. In order to do this we have to find the molecular mass of aspartame (the total weight of each atom of the molecule combined. This figure can be used to construct a conversion factor so that the grams may be converted into moles. Molecular weights for each atom can be found on any periodic table. Avagadro's number (6.022*10^23) is a constant value that expresses the number of molecules in one mole of a substance. 

The molecular weight for aspartame is 294.3 grams per mole. 

The process of finding how many atoms of H there are in 3.00g of aspartame would be like this: 

1. 3g * 1mol/294.3g = .01mol aspartame (this is converting grams to moles) 

2. .01mol * 6.022*10^23 = 6.022*10^21 (This is finding the number of molecules) 

3. (6.022*10^21) * 18 = 1.08*10^23 

This 3rd calculation is done because in part 2, you calculated the number of molecules of aspartame there were in 3g. In each molecule of aspartame there are 18 hydrogen atoms. So the final answer is: 
1.08*10^23 hydrogen atoms.
3 0
2 years ago
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