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Nina [5.8K]
3 years ago
6

Propane is used as a fuel for camp stoves. It undergoes combustion to form carbon dioxide and water.

Chemistry
1 answer:
Arisa [49]3 years ago
8 0
Fuel camp equal width time inchess
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What is the value for the potential energyfor a n = 6 Bohr orbit electron in Joules?
ioda

Answer:

Potential energy for n = 6 Bohr orbit electron is -1.21*10⁻¹⁹J

Explanation:

As per the Bohr model, the potential energy of electron in an nth orbit is given as:

PE_{n} = -\frac{kZe^{2}}{r_{n}}

here:

k = Coulomb's constant = 9*10⁹ Nm2/C2

Z = nuclear charge

e = electron charge = 1.6*10⁻¹⁹ C

r(n) = radius of the nth orbit = n²(5.29*10⁻¹¹m)

Substituting for k, Z(= 1), e and r(n) in the above equation gives:

PE_{6} = -\frac{9*10^{9}Nm2/C2*1*(1.6*10^{-19}C)^{2}}{(6)^{2}*5.29*10^{-11}m}=-1.21*10^{-19}J

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2 years ago
Which statement below describes the behavior of a Molecules when a substance changes from a gas to liquid
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Answer:

As a substance changes from a solid to a liquid to a gas, its molecules first the molecules are moving fast enough, they are able to "escape." They leave the surface of the liquid as gas molecules. Evaporation is not the only process that can change a substance from a liquid to a gas. The same change can occur through boiling.

Explanation:

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__________ ___________ can release different forms of energy such as electricity or light, in addition to the release of heat en
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gypsum is insoluble in water. you are asked to purify a sample of gypsum that is contaminated with a soluble salt.
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Answer:

a. The apparatus required to purify gypsum sample are: Bunsen burner, beaker, Filter Funnel, stirring rod, the filter paper.

b. Gypsum is a sulfate mineral that is made up of calcium sulfate dihydrate. Step-by-step instruction to purify gypsum sample is as follows:

1. Add water to the gypsum sample in a beaker.

2. Use the stirring rod to mix the mixture well.

3. Filter off the excess solid from the mixture using the filter paper and filter funnel.

4. Put the filtered mixture over the bunsen burner and evaporate the excess water from the mixture.

5. Allow the hot liquid to cool down and filter it again through the filter paper to get the pure gypsum.

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Which is not a compound?Electrons spin in shells around the nucleus. The closest shell (n = 1) can contain a maximum of _____ el
melisa1 [442]

The closest shell (n = 1) can contain a maximum of 2 electrons.

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