**Explanation:**

Phosphorus (P) because of the 5 valence electrons total, 3 of them are in the 3p sublevel, and according to Hund's rule, they "single-fill" each orbital first.

The pOH of an aqueous solution of 0.480 M trimethylamine (a weak base with the formula (CH3)3N) is .

**Answer:**

**Explanation:**

Kb of (CH₃)₃N is 7.4 x 10⁻⁵

initial concentration of (CH₃)₃N a is .48 M

(CH₃)₃N + H₂O = (CH₃)₃NH⁺ + OH⁻

a - x x x

x² / (a - x ) = Kb

x is far less than a so a - x can be replaced by a .

x² / a = Kb

x² = a x Kb = .48 x 7.4 x 10⁻⁵ = 3.55 x 10⁻⁵ = 35.5 x 10⁻⁶

x = 5.96 x 10⁻³

pOH = - log ( 5.96 x 10⁻³ )

= 3 - log 5.96

= 3 - .775

= 2.225

what’s the most abundant isotope of lawrencium

**Answer:**

266Lr

Thirteen isotopes of lawrencium are currently known; the most stable is 266Lr with a half-life of 11 hours, but the shorter-lived 260Lr (half-life 2.7 minutes) is most commonly used in chemistry because it can be produced on a larger scale.

**Explanation:**

hopefully that helps you

A sample of propane, C3H8, contains 13.8 moles of carbon atoms. How many total moles of atoms does the sample contain

**Answer:**

[tex]Total = 50.6\ moles[/tex]

**Explanation:**

**Given**

[tex]Propane = C_3H_8[/tex]

**Represent Carbon with C and Hydrogen with H**

[tex]C = 13.8[/tex]

**Required**

Determine the total moles

**First, we need to represent propane as a ratio**

[tex]C_3H_8[/tex]** **implies

[tex]C:H = 3:8[/tex]

So, we're to first solve for H when [tex]C = 13.8[/tex]

**Substitute 13.8 for C**

[tex]13.8 : H = 3 : 8[/tex]

**Convert to fraction**

[tex]\frac{13.8}{H} = \frac{3}{8}[/tex]

**Cross Multiply**

[tex]3 * H = 13.8 * 8[/tex]

[tex]3 H = 110.4[/tex]

**Solve for H**

[tex]H = 110.4/3[/tex]

[tex]H = 36.8[/tex]

**So, when **

[tex]C = 13.8[/tex]

[tex]H = 36.8[/tex]

[tex]Total = C + H[/tex]

[tex]Total = 13.8 + 36.8[/tex]

[tex]Total = 50.6\ moles[/tex]

Solve proportion 2/4.5=t/0.5
How did the British treat the Native Americans they came into contact with when they began colonizing North America?
whats the most abundant isotope of lawrencium
1. The poet repeats the words no, cruel, starless, and unfriendly to show that A. They call attention to Joshs pain and emptiness. B. They emphasize Joshs sense of peace and acceptance. C. They highlight Joshs love and admiration for his father. D. They reflect Joshs refusal to acknowledge his fathers death
Is f^-1(x) = x/9 - 5/9 a function?
why is it important to learn the definitios of the parts of speech?
Why does the family move to Memphis? What happens there?Black boy book
why are people against the idea of child labor
What part of the cell determines the type and order of the amino acids that make up a protein?
XY bisects WXZ and mWXY=29. Find mZXY and mZXW.
Please find the area and circumference ofthe circle below
Which inequality matches the graph shown?
Brandon enters bike race. He bikes 9 1/2 miles every 1/2 hour
What file format is used to help prevent other people from editing a final document?RTFTXTPDFPWP
ASAP I need help on this
Yodelin has fifty quarters and dimes. Their total value is $9.80. Which of these systems of equations can be used to find the number of quarters (q) anddimes (d) Yodelin has?
The length of a rectangle is 11 less than 9 times the width. The perimeter of the rectangle is 18 inches
Which types of matter are made of atomsa. Mixturesb. ElementsC. CompoundsD. All of the above
which of the following factors are likely to strengthen a diverse family?1. Family using their gadgets during breakfast 2. Family playing in the park3. Mother busy on her laptop ignoring her daughter 4. Farther explaining family traditions to son
You cannot change a decision in the STRONG process after you have made it.Please select the best answer from the choices provided.OF