Answer:
See explanation
Explanation:
The p orbital is threefold degenerate. This implies that the p-sublevel is composed of three orbitals; px, py and pz.
According to Hund's rule, electrons occur singly when filling degenerate orbitals before pairing takes place. Since the three orbitals are degenerate, any of px, py or pz may be first filled.
If one lobe of any of the px, py or pz is first filled, the next electron must go into the next degenerate orbital. When all are filled, pairing of electron spins may now begin.
Based on Hund's rule the electron is most like to be found in Px, Py or Pz, and it will fill them singly before paring.
The P-orbital has three sub-orbitals or degenerate orbitals such as Px, Py and Pz which an electron occupy at a time before paring.
The maximum electron in P-orbital is 6 electrons, each degenerate orbital will contain maximum of 2 electrons.
According to Hund's rule, electron will fill the degenerate or sub-orbitals singly first before paring.
Thus, we can conclude that based on Hund's rule the electron is most like to be found in Px, Py or Pz, and it will fill them singly before paring.
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The chemical formula for lithium phosphide is Li3P. Which best describes this ionic compound?
Lithium ions have 1 positive charge, and phosphorus ions have 3 negative charges.
Lithium ions have 3 positive charges, and phosphorus ions have 1 negative charge.
Lithium ions have 1 negative charge, and phosphorus ions have 3 positive charges.
Lithium ions have 3 negative charges, and phosphorus ions have 1 positive charge.
Answer:
B) Lithium ions have 1 positive charge, and phosphorus ions have 3 negative charges.
Explanation:
Lithium phosphide is an ionic compound in which lithium ions have 1 positive charge, and phosphorus ions have 3 negative charges. Therefore, option A is correct.
An ionic compound is a type of chemical compound that is composed of ions held together by electrostatic forces of attraction. These compounds are typically formed through the transfer of electrons between atoms, resulting in the formation of positively charged cations and negatively charged anions.
Ionic compounds often form crystal lattice structures due to the strong electrostatic forces between the ions. They tend to have high melting and boiling points.
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7. On the surface of the Earth, the acceleration due to gravity is
O A. 8.9 pounds
O B.8.9 m/s2
C. 9.8 pounds
O D. 9.8 m/s2
T
“NH4VO3” is a...
Symbol
Name
Chemical formula
Answer:
its a chemical formula, it has numbers and symbols
I can't understand this I need it done by 4:20
Answer:
well 6.3 times 10 is 63 and 6.7 times 10 is 67
Explanation:
At a certain position in a piping system, a solution with a specific gravity of 1.50 passes through an 8-cm pipe with an average speed of 1.2 m/s. At some position downstream, the elevation of the pipe has increased 15.0 m and the pipe size has decreased to 5 cm. The temperature of the fluid is assumed constant at 30 C, and a heat loss of 25 Nm/kg occurs. Determine the change in pressure, in bars and megapascals.
Answer:
[tex]\Delta p=-2.60bar\\ \\\Delta p=-0.260MPa[/tex]
Explanation:
Hello,
In this case, by using the Bernoulli equation:
[tex]p_1+\frac{1}{2}\rho v^2_1+\rho gh_1= p_2+\frac{1}{2}\rho v^2_2+\rho gh_2+\rho h_L[/tex]
Whereas [tex]h_L[/tex] accounts for the heat loss, so we can compute the change of pressure by:
[tex]p_1 +\frac{1}{2}\rho v^2_1+\rho gh_1= p_2+\frac{1}{2}\rho v^2_2+\rho gh_2+\rho h_L\\\\p_2-p_1=\frac{1}{2}\rho v^2_1+\rho gh_1-\frac{1}{2}\rho v^2_2-\rho gh_2-\rho h_L\\\\\Delta p=\rho *[\frac{1}{2}(v_1^2-v_2^2)+g(h_1-h_2)-h_L ][/tex]
Thus, we must first compute the velocity inside the 5-cm section by using the continuity equation:
[tex]v_2=v_1\frac{A_1}{A_2}=v_1*(\frac{\pi d_1^2/4}{\pi d_2^2/4} ) \\\\v_2=1.2m/s*\frac{8cm}{5cm}=1.92m/s[/tex]
It means that the change in pressure in Pa turns out (density is 1500 kg/m³ given the specific gravity of the fluid):
[tex]\Delta p=1500\frac{kg}{m^3} *[\frac{1}{2}((1.2\frac{m}{s})^2-(1.92\frac{m}{s})^2)+9.8m/s^2(0m-15.0m)-25\frac{m^2}{s^2} ]\\\\\Delta p=1500\frac{kg}{m^3}*(-1.1232\frac{m^2}{s^2} -147\frac{m^2}{s^2} -25\frac{m^2}{s^2} )\\\\\Delta p=-259684.8Pa[/tex]
Therefore, the change in pressure in bar and MPa turns out:
[tex]\Delta p=-259684.8Pa*\frac{1bar}{1x10^5Pa}=-2.60bar\\ \\\Delta p=-259684.8Pa*\frac{1MPa}{1x10^6Pa}=-0.260MPa[/tex]
Such negative sign means that the pressure at the 5-cm section is lower than the pressure at the 8-cm section.
Best regards.
an object has a mass of 4 grams and a volume of 2 cm3 what is the density of the object
Answer:
D = 2 g/cm³
Explanation:
Density = mass over volume
D = m/v
Step 1: Define
m = 4 grams
v = 2 cm³
Step 2: Substitute and Evaluate
D = 4 g/2 cm³
D = 2 g/cm³
Can you classify solid and liquid please
Answer:
Solid : The intermolecular space is very less
Liquid : The intermolecular space is fairly more than in solids
Solid : It has a fixed shape
Liquid : It has a fixed volume but shape changes according to where it is placed
Solid : eg : Books
Liquid : eg : water
If my answer helped, kindly mark me as the brainliest!!
Thank You!!
Answer:
Liquids have the following characteristics:
No definite shape (takes the shape of its container).
Has definite volume.
Particles are free to move over each other, but are still attracted to each other
Explanation:
ye
How many CO2 molecules in 0.0189 mol of CO2?
.11 x 1022 molecules
.624 x 1023 molecules
1.14 x 1022 molecules
Answer:
option C is correct = 1.14 × 10²² molecules of CO₂
Explanation:
Given data:
Number of moles of CO₂ = 0.0189 mol
Number of molecules = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
For example,
18 g of water = 1 mole = 6.022 × 10²³ molecules of water
For given question:
1 mole of CO₂ = 6.022 × 10²³ molecules of CO₂
0.0189 mol of CO₂ × 6.022 × 10²³ molecules of CO₂ / 1mol
1.14 × 10²² molecules of CO₂
Thus, option C is correct.
Which element does this atom represent?
Answer:
Option C is correct = fluorine
Explanation:
An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.
All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.
This diagram show that there are 9 electrons and 9 protons are present. We know that the number of protons or electrons are atomic number of that element. From periodic table we know that atomic number of fluorine is 9 thus the given atom present fluorine atom.
An unknown compound contains only C , H , and O . Combustion of 5.60 g of this compound produced 13.7 g CO2 and 5.60 g H2O . What is the empirical formula of the unknown compound?
Answer:
Empirical formula of compound is C₄H₈O
Explanation:
Given data:
Mass of compound = 5.60 g
Mass of CO₂ = 13.7 g
Mass of H₂O = 5.60 g
Empirical formula of compound = ?
Solution:
Percentage of C:
13.7 g/5.60 g × 12/44× 100
2.45×0.273× 100 = 66.9%
Percentage of H:
5.60 g/ 5.60 g × 2.016/18 × 100
11.2%
Percentage of O:
(66.9% + 11.2%) - 100 = 21.9%
Grams atom of C , H, O
66.9/12 = 5.6
11.2 / 1.008 = 11.11
21.9 / 16 = 1.4
Atomic ratio:
C : H : O
5.6/1.4 : 11.11/1.4 : 1.4/1.4
4 : 8 : 1
Empirical formula:
C₄H₈O
[(Cl3Sn)2RhCl2Rh(SnCl3)2]⁴- name
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.......
need it by 4:20 please
Answer:
well 4.2 times 10 is 42 and 6.1 times 10 is 61
Explanation:
How can a community help other communities affected by human rights violations
Answer:
the community needs to work alongside with government and religious organisations. the communities work on both profile and non profile work incase of human rights violations. they also force the government to take necessary action
Elastic energy is a form of kinetic energy.
True or False help
URGENT HELP!!!! IN NEED OF EXPERT ANSWERS!!!PLEASE!!!!! WILL MARK BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!! My question is.... Would you consider the triple point of cyclohexane to be a chemical or physical property? Why?
Please watch a video on "Triple point of Cyclohexane." before responding
Answer:
Physical property
Explanation:
Physical properties differ from chemical properties in that a different substance is formed during a chemical process whereas, a physical property produces NO 'new' substance upon completion of change. By definition, 'Triple Point' is the temperature-vapor pressure value where the substance of interest exists in all three states simultaneously; that is, solid, liquid and gas. In this, the chemistry of cyclohexane remains unchanged regardless of temperature-pressure conditions and no new compounds are formed as products of change.
Example:
At the triple point of cyclohexane C₆H₁₂(s) ⇄ C₆H₁₂(l) ⇄ C₆H₁₂(g) ⇄ C₆H₁₂(s), the cyclohexane is still cyclohexane regardless of state and is classified as a physical process. The combustion of cyclohexane in the presence of oxygen, however, produces new substances (CO₂(g) and H₂O(g)) having chemical and physical properties different from original cyclohexane added in the process.
For the combustion of C₆H₁₂(g) => 2C₆H₁₂(g) + 13O₂(g) => 12CO₂(g) + 2H₂O(g) produces substances (CO₂(g) and H₂O(g)) having different physical and chemical properties than the C₆H₁₂(g) introduced into the system and is classified a chemical process.
PLEASE HELP
2.0 x 10410
OTX
8.0 x 10
Answer:
10
[tex] \frac{2.0.10(410)}{8.0.10( - 240)} = \frac{10(650)}{40} [/tex]
Explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
help me out please this is hard
Which one of these describes the arrangement of particles in a metal?
A. Layers of metal ions surrounded by delocalised electrons
B.Closely packed electrons with delocalised ions
C.Alternating layers of metal ions and electron
D. None of the above
Answer:
C. Alternating layers of metal ions and electron
Which statements are part of the safety protocol for this lab experiment? Check all that apply.
Always wear nitrile gloves while handling chemicals such as water.
Do not throw around any of the athletic equipment used in this exercise.
Be careful not to spill when transferring water from the water displacement procedure; this could cause people to slip and fall.
Check containers, such as beakers, graduated cylinders, and buckets, for cracks or chips prior to use.
Avoid submerging sports equipment under water.
Answer: the answer is B, C, and D
Explanation:
Answer:
-Do not throw around any of the athletic equipment used in this exercise.
-Be careful not to spill when transferring water from the water displacement procedure; this could cause people to slip and fall.
-Check containers, such as beakers, graduated cylinders, and buckets, for cracks or chips prior to use.
Explanation:
hope it helps! correct on edge :)
What type of bond will form between the following pairs of atoms?
H and F
Fe and S
Na and O
Si and O
Cl and Cl
Mg and O
Answer:
the answer is ionic
Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom. ... The atom that loses the electrons becomes a positively charged ion (cation), while the one that gains them becomes a negatively charged ion (anion). A brief treatment of ionic bonds follows
Substituents on an aromatic ring can have several effects on electrophilic aromatic substitution reactions. Substituents can activate or deactivate the ring to substitution, donate or withdraw electrons inductively, donate or withdraw electrons through resonance, and direct substitution either to the ortho/para or to the meta positions. From the lists of substituents, select the substituents that correspond to each indicated property. The substituents are written as -XY, where X is the atom directly bound to the aromatic ring.
1. Activation of the ring towards substitution.
a. CFS
b. NO2
c. OCOCH3
d. NH2
2. Withdrawal of electrons through resonance.
a. OH
b. S03H
c. CH3
d. COOH
Answer:
Activation of the ring towards substitution: NH2, OCOCH3
Withdrawal of electrons through resonance. COOH, SO3H
Explanation:
During electrophilic substitution, certain substituents may activate or deactivate the benzene ring.
Substitients that activate or deactivate the benzene ring may do so via resonance or inductive effect.
Groups such as -NH2 and OCOCH3 activate the ring via resonance while groups such as -SO3H and -COOH deactivate the ring via resonance.
All of the following are true of body systems within an animal, EXCEPT-
each system within the body is made up of multiple parts.
body systems interact with other body systems at a given time.
each part of a system only has functions for that system.
systems can respond to the needs of the animal.
Answer:
Each part of a system only has functions for that system.
Explanation:
since the second answer is right, then that automatically eliminates the third one. each part of a system can function for other systems too. such as the brain which controls all systems.
What type of attachment is displayed when a child actively explores the environment but seeks out the caregiver for reassurance or comfort?
I didnt see an answer for this so I thought Id answer it myself. The answer is C secure. (Edge 2020) Hope this helps!
Answer:
C - Secure
Explanation:
Edg 2020
Anxious-Ambivalent attachment is displayed when a child actively explores the environment but seeks out the caregiver for comfort or reassurance.
• The form of attachment when children seem to distrust caregivers, and this insecurity usually signifies that their surroundings is explored with trepidation rather than excitement is known as Anxious-Ambivalent attachment.
• In this form of attachment, children continuously look for approval from their caregivers and spontaneously observe their environments for fear of being abandoned.
• The children developing under this form of attachment style, seem to carry what they have acquired into adulthood, and usually feel unloved by their partners.
Thus, the given case is of Anxious-Ambivalent attachment.
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I am an alkaline earth metal in period 6. Who am I?
Answer:
Barium (Ba)
Explanation:
Answer:
Ba, or Barium
Explanation:
Alkaline Earth Metals are in the 2nd group of the Periodic Table.
Be
Mg
Ca
Sr
Ba
Ra
These are the Alkaline Earth metals. They start on Period 2:
Period 2 - Be
Period 3- Mg
Period 4 - Ca
Period 5 - Sr
Period 6 - Ba
Period 7 - Ra
What is the concentration in ppm if 1.6 g NH3 is dissolved into 147 mL of water?
A) 1.1×10^4 ppm
B) 0.0067 ppm
C) 0.011 ppm
D) 6.7×10^3 ppm
Answer:
Option A is correct.
Explanation:
Given data:
Mass of ammonia = 1.6 g
Volume of water = 147 mL
Concentration in ppm = ?
Solution:
As we know that,
1 g/mL = 1000000 ppm
1.6 g/147 mL = 0.011 g/mL
Now we will convert the 0.011 g/mL into ppm.
0.011 × 1000000 = 11000 ppm
In scientific notation:
1.1×10⁴ ppm
Thus, option A is correct.
What is the electric charge of a Proton?
what substance is given off when salt is heated gently?
Answer:
Water
Explanation:
When a salt solution is heated, the solvent (assumedly water) will evaporate at a greater rate because the water molecules have greater energy.
Which of the following would you expect to have the smallest negative charge?
What is the name of the longest running musical
and in what year did it premier?
Answer:
The longest-running show in Broadway history officially opened on January 26, 1988 and is still playing at the Majestic The Andrew Lloyd Webber musical won 7 1988 Tony Awards including Best Musical.
Explanation:
Brainliest plz?
What is the density of an unknown metal in g/mL if a sample of the metal has a volume of 520 mL and a mass of 2344 g?
Answer:
The correct answer is 4.5 g/mL.
Explanation:
To find the density, we must remember the formula for density, which is given by the following:
density = mass/volume
In this case, we are given both the mass and the volume, so we just need to plug in these values into the formula to solve for the density. This is modeled below:
density = mass/volume
density = 2344 g/520 mL
density = 4.5 g/mL
Therefore, the correct answer is 4.5 g/mL (notice that the units for our answer match what is being asked for in the problem).
Hope this helps!
