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marshall27 [118]
3 years ago
11

Help pleaseeeeeeee //////:))))))))))))

Chemistry
1 answer:
Mademuasel [1]3 years ago
7 0
Chose 3 you know this because you will need heat..
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Which of the following best describes the interaction of matter in a suspension?
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Consider the chart describing the element. According to the chart, the element is _______ with an atomic number of ___________
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The answer for the question is Lithium; 3.                                                  

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Complete combustion of 8.10 g of a hydrocarbon produced 25.9 g of CO2 and 9.27 g of H2O. What is the empirical formula for the h
balu736 [363]

CxHy     +  O2    -->    x CO2     +    y/2  H2O

 

Find the moles of CO2 :     18.9g  /  44 g/mol   =    .430 mol CO2   = .430 mol of C in compound

Find the moles of H2O:      5.79g / 18 g/mol     =     .322 mol H2O   = .166 mol of H in compound

 

Find the mass of C and H in the compound:

                             .430mol  x 12  =  5.16 g C

                              .166mol  x 1g   = .166g H   

 

When you add these up they indicate a mass of 5.33 g for the compound, not 5.80g as you stated in the problem.

Therefore it is likely that either the mass of the CO2 or the mass of H20 produced is incorrect (most likely a typo).

In any event, to find the formula, you would take the moles of C and H and convert to a whole number ratio (this is usually done by dividing both of them by the smaller value).

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4 years ago
The disaccharide lactose can be decomposed into its constituent sugars galactose and glucose by acid hydrolysis or by the enzyme
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14.28 explain how you would distinguish between each pair of compounds using high- resolution mass spectrometry
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The distinguish between each pair of compounds using high- resolution mass spectrometry by the exact mass rather than nominal mass are utilizes to measure the compound.

The mass spectrometry is involves the following steps :

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Mass spectrometry is the analytical method useful for the calculating the mass to charge ratio ( m / z ). the mass spectrometry is based on the newton's second law and the momentum.

Thus, the mass spectroscopy is method to measure the molecular mass of the compound and indirectly helps examine the isotopes and based on the newton's second law .

To learn more about mass spectroscopy here

brainly.com/question/28587595

#SPJ4

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