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Natali5045456 [20]
4 years ago
5

The electronic structure of a sodium atom can be written 2,8,1. a) Write the electronic structure of a potassium atom in the sam

e way.
Chemistry
1 answer:
mariarad [96]4 years ago
5 0
Answer = 2,8,8,1

Since Potassium is the 19th element in the periodic table, the numbers in the electronic structure should add upto 19. The first number can always only be 2. Then all other batches of numbers can be 8 or less than 8. 2+8= 10
10+8= 18
18+1= 19.

- Hope it helps!
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A monatomic ideal gas in a rigid container is heated from 206 K to 335 K by adding 8280 J of heat. How many moles of gas are the
GalinKa [24]

Answer: 5.14 moles

Explanation:

heat supplied:  8280 J

The formula used for heat absorbed by an ideal gas:

q=n\times C_v\times (T_2-T_1)

where,

q = heat absorbed = 8280 J

C_v = for monoatomic gas = \frac{3}{2}R

n = number of moles

R = gas constant = 8.314 J/Kmol

T_1 = initial temperature = 206 K

T_2 = final temperature  = 335 K

Now put all the given values in the above formula,

8280J=n\times \frac{3}{2}\times (8.314J/Kmol)\times (335-206)K

n=5.14

Thus there are 5.14 moles of gas in the container.

3 0
3 years ago
The density of a sample of F2(g) is 1.559 g/L. If the gas is held at 755 torr, calculate the temperature.
4vir4ik [10]

Answer:

The temperature is 590,10 K

Explanation:

As stated, we understand that there is one mole of F2, which is equivalent to 37.9968x2 grams = 75.936 grams. The unit of Torr is converted to atm, 1 Torr = 0.0013 atm, and with the data of grams it is converted into volume through density:

density = m / v ---> v = m / density = 75,936 g / 1,559 g / l = 48, 708 l

Exactly the formula PV = nRT

n = number of moles (according to what is interpreted in the sentence is 1 mole)

P = pressure 755 Torr (converted to atm 755Torr / 0.0013 atm / Torr = 0.99344 atm)

R = value constant 0.082 l x atm / K x mol

T = is our mystery (in degrees Kelvin)

0.99344 x 48, 708 l = 1 mol x 0.082 l x atm / K x mol x X

X = 0.99344 x 48, 708 l / 1 mol x 0.082 l x atm / K x mol

X = 590, 10 K

The temperature is 590.10 K

7 0
3 years ago
If two electrons in the same atom have the same value of "l"
lesya692 [45]

Answer:

If two electrons in the same atom have the same value of "l", they are If two electrons in the same atom have the same value of "l", they are in the same orbital. in the same sublevel, but not necessarily in the same level. in different levels and in different shaped orbitals. in the same level, but different sublevel.

3 0
3 years ago
b → p experiment number [a] (m) [b] (m) initial rate (m/s) 1 0.273 0.763 2.83 2 0.273 1.526 2.83 3 0.819 0.763 25.47 22) the rat
Mazyrski [523]

The rate law for this reaction is [A]².

Balanced chemical reaction used in this experiment: A + B → P

The reaction rate is the speed at which reactants are converted into products.

Comparing first and second experiment, there is no change in initial rate. The concentration of reactant B is increased by double. Initial rate does not depands on concentration of reactant B.

Comparing first and third experiment, initial rate is nine times greater, while concentration of reactant A is three times greater. Conclusion is that concentration of reactant A is squared and the rate is [A]².

More info about rate law: brainly.com/question/16981791

#SPJ4

8 0
1 year ago
Choose the statement that does not apply to chemical reactions
n200080 [17]

Answer:

I think the answer to the question is c

4 0
3 years ago
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