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Maru [420]
3 years ago
12

I need help with the bottom one plz and thxs

Chemistry
1 answer:
Juliette [100K]3 years ago
8 0
Dissolving rate because the temperature is the independent variable and the dissolving rate is what you're testing for.
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Why did bohrs observations of gaseous elements not reveal a complete spectrum when the light was shone through a prism? explain
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Q05 the "atomic number" of an atom is determined by the number of ________ it has.
Alexxx [7]
The atomic number of an atom is determined by the number of protons it has..

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6 0
4 years ago
AC current is produced by which of the following things?
pogonyaev

Answer:

B

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5 0
3 years ago
Read 2 more answers
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).

8 0
4 years ago
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