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scZoUnD [109]
3 years ago
6

If the electron configuration of an element is 1s22s22p63s23p5, the element is

Chemistry
1 answer:
stiv31 [10]3 years ago
3 0
Chlorine because that element has 17 electrons
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The overall energy involved in the formation of CsCl from Cs(s) and Cl2(g) is −443 kJ mol−1. Given the following information: he
Alex17521 [72]

Explanation:

It is given that total energy is -443 kJ/mol and formula to calculate the lattice energy is as follows.

       Total energy = heat of sublimation + bond dissociation energies + ionization energy for Cs + EA of Cl^{-} + lattice energy

       -443 kJ/mol = 76 + 121 + 376 - 349 + Lattice energy

   Lattice energy = (-443 - 76 -121 - 376 + 349) kJ

       Lattice energy = -667 kJ

Therefore, we can conclude that -667 kJ is the magnitude of the lattice energy for CsCl.

8 0
3 years ago
Which property of potential energy distinguishes it from kinetic energy?
vazorg [7]

Answer: <u><em>Shape and position</em></u>

Explanation:

<u><em>I just took the test and I got it correct</em></u>

3 0
3 years ago
Nuclear energy can be used to power _______. a. street lights b. businesses c. homes d. all of the above Please select the best
Taya2010 [7]
<h3><u>Answer;</u></h3>

All the above

-street lights

-businesses

- Homes, etc

<h3><u>Explanation; </u></h3>
  • Nuclear energy comes from splitting atoms in a reactor to heat water into steam, turn a turbine and generate electricity.
  • Nuclear reactions are used to release nuclear energy that generate heat, which most frequently is then used in steam turbines to produce electricity in a nuclear power plant.
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8 0
3 years ago
How many atoms are in 3.20 moles of carbon
DIA [1.3K]

Answer:

19.264×10^{23} atoms are present in 3.2 moles of carbon.

Explanation:

It is known that one mole of each element is composed of Avagadro's number of atoms. This is same for all the elements in the periodic table.

So, as 1 mole of any element = Avagadro's number of atoms = 6.02×10^{23} atoms

It is as simple as understanding a dozen of anything is equal to 12 pieces of that object.

As here the moles of carbon is given as 3.20 moles, the number of atoms in this mole can be determined as below.

1 mole of carbon = 6.02 ×10^{23} atoms

Then, 3.20 moles of carbon = 3.20 × 6.02 ×10^{23} atoms

Thus, 19.264×10^{23} atoms are present in 3.2 moles of carbon.

6 0
3 years ago
A sample of SO2 gas occupies 45.6 L at 373 K and 3.45 atm. This sample contains how many moles of oxygen atoms?
lisov135 [29]

Answer:

10.28 mol

Explanation:

S + 2O = SO2

(atm x L) ÷ (0.0821 x K)

(3.45 x 45.6) ÷ (0.0821 x 373)

=5.13726

Then round it to significant figures

=5.14

5.14 mol SO2 x (2 mol O ÷ 1 mol SO2)

=10.28 mol O

5 0
4 years ago
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