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andre [41]
3 years ago
9

Calculate the atomic mass of oxygen if the three common isotopes of oxygen have masses of 15.995 amu (99.759% abundance), 16.995

amu (0.037 % abundance), and 17.999 amu (0.204 % abundance).
Chemistry
1 answer:
Valentin [98]3 years ago
6 0

Answer:

16 amu

Explanation:

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What is the mass in grams of 8.65 mol C8H18?
aliina [53]

Answer:

m = 998 g

Explanation:

Hello there!

In this case, according to the definition of the molar mass as the mass of one mole of the compound, it is possible to state the 1 mole of C8H18 has a mass of 114.26 grams; therefore, the mass in 8.65 moles turn out to be:

m=8.65mol*\frac{114.26g}{1mol}\\\\m=998g

In agreement to the notation requirement.

Best regards!

5 0
3 years ago
(a) the characteristic odor of pineapple is due to ethyl butyrate, a compound containing carbon, hydrogen, and oxygen. combustio
ella [17]

By stoichiometry and assume that:

CxH2xOy + zO2 -> xCO2 + xH2O 

<span>
CO2: 9.48/44 = 0.215 mmol 
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mass of O in ethylbutyrate = 4.17 - 2.58 - 0.43 = 1.11 mg 
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<span>
Thus we have C3H6O</span>

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8 0
3 years ago
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The greater the [H*], the stronger the acid.<br> True<br> False
Law Incorporation [45]
Trueeeeeeeeeeeeeeeee!!!!!
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I don't really understand this worksheet question.​
Citrus2011 [14]
25/2 and 96/X
CROSS MULTIPLY.

2x=2,400.
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you take the GIVEN MASS of an element, and you put it on top, the coefficient is what it’s over. i believe this is right
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