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PSYCHO15rus [73]
3 years ago
15

which would have the longer wavelength, a photon with energy of 4.59 x 10^-19 J or a photon with energy of 3.01 x 10^-19 J

Chemistry
1 answer:
Eduardwww [97]3 years ago
6 0
Compare them accordingly with the formula of E=hc/wavelength
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PbSO4 → PbSO3 + O2<br> Balance the equation
erastova [34]

Answer:

2PbSO4 → 2PbSO3 + O2

Explanation:

in original equation we notice that we have one extra oxygen, which we cannot form a O2 with, so by multiplying everything else by 2, we get 2 extra oxygen

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Explain the Doppler effect using light. Why is the Doppler effect important in astronomy?
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Which diagram shows the correct direction of electron flow in an electrolytic cell?
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A

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2 years ago
Explain the need of the term avarage atomic mass
vodomira [7]

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The average atomic mass of an element is the sum of the masses of its isotopes, each multiplied by its natural abundance (the decimal associated with percent of atoms of that element that are of a given isotopе). An element does not have an absolute atomic mass.

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4 0
3 years ago
A 2.00-g sample of a large biomolecule was dissolved in 15.0 g carbon tetrachloride. the boiling point of this solution was dete
Katarina [22]
We will use boiling point formula:

ΔT = i Kb m 

when ΔT is the temperature change from the pure solvent's boiling point to the boiling point of the solution = 77.85 °C - 76.5 °C = 1.35

and Kb is the boiling point constant =5.03

and m = molality 

i = vant's Hoff factor

so by substitution, we can get the molality:

1.35 = 1 * 5.03 * m

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∴ moles = 0.00405 moles

∴ The molar mass = mass / moles
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5 0
3 years ago
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