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Mandarinka [93]
3 years ago
9

What is the percent composition of iron in FeCl3​

Chemistry
1 answer:
ololo11 [35]3 years ago
7 0

calculate the molar mass of Fe + 3(Cl)

that is your total mass

percent composition of FeCl3

mass % Fe = molar mass FE / total mass X 100 = %

mass % 3Cl = molar mass 3Cl / total mass X 100 = %

that is percent composition

Hope it’s help !!!!

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What is the wavenumber of the radiation emitted when a hydrogen
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Answer: Wavenumber of the radiation emitted  is 0.08\times 10^{8}m^{-1}

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The relationship between wavelength and energy of the wave follows the equation:

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Putting values in above equation, we get:

1.634\times 10^{-18}J=\frac{(6.626\times 10^{-34}Js)\times (3\times 10^8m/s)}{\lambda}\\\\\lambda=12.16\times 10^{-8}m

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<u>Step 1:</u> Data given

Mass of the piece of metal = 80.0 grams

Mass of the water = 125 grams

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Initial temperature of water =20.0 °C

Final temperature = 24.7 °C

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<u>Step 2:</u> Calculate specific heat of the metal

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with ΔT(water) = T2-T1 = 24.7 - 20 = 4.7°C

with mass of metal = 80.0 grams

with c(metal) = TO BE DETERMINED

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The specific heat of the metal is 0.485 J/g°C

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