Complete the following:

#1: Number of sublevels in n=3?

#2: Number of orbitals in the 2p sublevel?

#3: Maximum number of electrons in 3d sublevel?

#4: Maximum number of electrons in a 3p orbital?

#5: Group number of carbon?

#6: Sublevel being filled by element with atomic number 47?

#7: Sublevel that begins to fill after 4s^2 ?

#8: Number of valence electrons in As?

Give the symbol of the element described by each of the following:

#1: First element that fills 3s sublevel?

#2: Period 4 element in the same group as F?

#3: Element with 3d^6 ?

#4: Element with a half-filled 5p level?

#5: First element with five 3p electrons?

#6: First element that completes n=3?

#7: Period 6 element in the same group as Mg?

1.Calculate the number of molecules in 0.750 mol of methane, CH4.

2. Calculate the number of moles in 15.0 g of oxygen gas, O2.

3. Calculate the mass of 115 molecules of carbon dioxide

4. Calculate the number of molecules in 2.25 g of sulfur hexafluoride.

5. Calculate the number of carbon atoms in 1.50 g of butane, C4H10.

6. Calculate the mass of calcium chloride that contains 3.20 × 1024 atoms of chlorine.

7. Calculate the number of water molecules formed by the complete combustion of 7.21 g of ethane, C2H6

Differentiate between molar mass, equivalent mass, number of moles and number of equivalents with examples as related to electrochemistry.

Print numbers 0, 1, 2, ..., userNum as shown, with each number indented by that number of spaces. For each printed line, print the leading spaces, then the number, and then a newline. Hint: Use i and j as loop variables (initialize i and j explicitly). Note: Avoid any other spaces like spaces after the printed number. Ex: userNum = 3 prints:

0

1

2

3

Write Python class that takes a string and returns with a valid phone number.

Number format is ten-digit numbers consisting of a three-digit area code and a seven-digit number.

Clean up different telephone numbers by removing punctuation, and removing incorrect format and the country code (1).

You should throw a ValueError with a string if there are too many or too few digits, or the wrong digits.

For example, the strings: +1 (617) 111-0000, 617-111-0000, 1 617 111 0000, 617.111.0000 should end up with (617) 111-0000

Sample and incomplete starting code:

_{class Phone:
   
    def __init__(self, raw):
        self.number = self._normalize(raw)}

    _{def __str__(self) -> str:}

    _{def area_code(self) -> str:}

    _{def _normalize(self, raw: str) -> str:
            Throws a ValueError Exception}

Suppose the following data were collected relating the total number of crimes committed to the number of police officers and if the town is located in the Southwest. Use statistical software to find the regression equation. Is there enough evidence to support the claim that on average there are less crimes in the Southwest than in other regions of the country at the 0.050.05 level of significance? If yes, type the regression equation in the spaces provided with answers rounded to two decimal places. Else, select "There is not enough evidence."

Crimes   Officers   Southwest (1 if Southwest, 0 if otherwise)
277   34   1
388   27   0
303   36   0
424   20   0
293   31   1
350   30   0
363   29   0
427   23   0
387   24   0
295   31   1
383   26   0
321   26   1
263   35   1
317   27   1
366   21   1
372   21   1
339   31   0
286   36   0
307   29   1
279   34   1

Selecting a checkbox will replace the entered answer value(s) with the checkbox value. If the checkbox is not selected, the entered answer is used.

CRIMESi= _____+ ______ OFFICERSi + ______ b2 SOUTHWESTi+ei

or

there is not enough evidence

(Please explain as I truly want to understand this!)

Cheers

Number Theory:

Let p be an odd number. Recall that a primitive root, mod p, is an integer g such that g^p-1 = 1 mod p, and no smaller power of g is congruent to 1 mod p. Some results in this chapter can be proved via the existence of a primitive root(Theorem 6.26)

(c) Given a primitive root g, and an integer a such that a is not congruent to 0 mod p, prove that a is a square modulo p if and only if a = g^e for an even number e. Use this to prove Euler's criterion: a is a square mod p if and only if a^(p-1)/2 = 1 mod p.

Provide the Java code to compute the sum, average, maximum number and minimum number if I have a string sentence of double numbers. Assume that the length of the string sentence is not known. It can be of any length.

To split a string based on the comma character use the following.

String sentence = "A,B,C,D,E";

String[] stringsArray = receivedSentence.split(",");

Then stringsArray is an array of five elements such that:

stringsArray[0] = 'A'

stringsArray[1] = 'B'

stringsArray[2] = 'C'

stringsArray[3] = 'D'

stringsArray[4] = 'E'

stringsArray.length will equal 5.

1. A one-electron atom has atomic number ?, mass number ? and a spherical nucleus of radius ? . Assume electric charge +?? is uniformly distributed throughout the volume of
the nucleus. Ignoring spin, use first order non-degenerate perturbation theory and the
hydrogenic wave functions adapted to the one-electron atom to determine the dependence
of the ground state energy of the atom on ?

1a.

Potassium has an atomic number of 19 and a mass number of 39. What would result if an uncharged potassium atom lost one electron?

Select one:

a. The atomic number of the atom would remain 19, the mass number would be reduced to 38, and the atom would be an anion.

b. The atomic number would be reduced to 18, the mass number would remain 39, and the atom would be an anion with a +1 charge.

c. The atomic number would remain 19, the mass number would remain 39, and the atom would be a cation with a +1 charge.

d. The atomic number would remain 19, the mass number would remain 39, and the atom would have no charge.

1b.

Which organelle often takes up much of the volume of a plant cell?

Select one:

a. lysosome

b. central vacuole

c. Golgi apparatus

d. chloroplast

1c.

In the formation of table salt (NaCl), sodium is said to be:

Select one:

a. Oxidized

b. Reduced

c. Neutral

d. Energized