Which is the Lewis structure for H3PO4? An upper P is single bonded above to an O, and to the left, right, and below to an O single bonded to an H. The O above the P has three pairs of dots to the left, above, and below; the O's to the sides have pairs of dots above and below, and the O below the P has pairs of dots right and left. A central upper P is single bonded left, right, above, and below to upper Os. The O above the P is single bonded to upper H on the left and the right, and has two electron dots above it. The O below the P is single bonded to an H below, and has pairs of electron dots to the left and right. A central upper P is double bonded to an O above, and single-bonded to an upper O single-bonded to an upper H to the left and the right. The O above the P has three pairs of electron dots, to the left, above, and to the right; the O's to the right and left have pairs of dots above and below. A central upper P is bonded to an upper H above, an upper O below, and upper O's bonded to upper H's to the left and the right. The O below the P has three pairs of electron dots, to the left, right, and below; the other two O's have pairs of dots above and below. A central upper P is double bonded to an O above, and single-bonded to an upper O single-bonded to an upper H to the left and the right. The O above the P has three pairs of electron dots, to the left, above, and to the right; the O's to the right and left have pairs of dots above and below.
Answers
Answer:
It is A.
Explanation:
I took the test.
The Lewis structure shows the arrangement of valence electrons in H3PO4.
The Lewis structure gives us a picture of the number of valence electrons in a molecule. This is because, in a Lewis structure, the electrons in the molecule are shown as dots. A single line may be used to show shared electrons in a covalent bond.
The correct Lewis structure of H3PO4 is an upper P is single bonded above to an O, and to the left, right, and below to an O single bonded to an H. The O above the P has three pairs of dots to the left, above, and below; the O's to the sides have pairs of dots above and below, and the O below the P has pairs of dots right and left.
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Related Questions
What is the zonecreated if force of separation occurs?
Answers
Sulfur has an electronegativity of 2.58, while Cesium has a value of 0.79. Based on this information, they would have what kind of chemical bond?
Answers
Answer:
Ionic
Explanation:
Because sulphur is a non-metal and cesium is part of the group 1 Alkali Metals, this creates an ionic bond
Ionic bonds are created from one metal and one non-metal element.
This still is declared as Ionic despite the balance of this is Cs2S
Bromine gas in a container is heated over a flame. What happens to the average kinetic energy of the bromine particles? It decreases rapidly. It increases quickly. It remains the same. It decreases slowly.
Answers
Answer: B. It increases quickly
Explanation:
As the bromine gas in a container is heated over a flame, the average kinetic energy increases quickly.
Kinetic energy of gas moleculeThe temperature of gas molecules is the measure of average kinetic energy of the gas molecules.
The increase in temperature increases the heat gained by the gas molecules which in turn increases the average kinetic energy of the individual gas molecules.
Thus, as the bromine gas in a container is heated over a flame, the average kinetic energy increases quickly.
Learn more about average kinetic energy of gases here: https://brainly.com/question/952575
Considering the patterns you have noticed in this activity, which statement best explains why a compound with the molecular formula CH3 doesn't exist in nature?
A. Hydrogen typically needs four bonds to reach a noble gas configuration.
B. Carbon needs more than just three bonds to reach a noble gas configuration. C. The chemical CH3 does not react with other substances because of its high stability.
D. CH3 has three double bonds, which fails to give it a noble gas configuration
Answers
Answer:
The answer is B
Explanation:
I had the same question and I chose B and it was correct.
Answer:
B. Carbon needs more than just three bonds to reach a noble gas
Explanation:
PLATO ANSWER
PLATO EXPLANATION-
Each hydrogen atom can make only one bond, but a carbon atom needs four bonds to be stable. Therefore, three hydrogen atoms are not enough for the carbon atom to make four bonds.
How many atm is 25.0 psi?
Answers
Answer:
1.70115 or 1.70 atm
Explanation:
1 psi is equal to 0.068046 atm.
Ammonia, NH3 is a common base with Kb of 1.8 X 10-5. For a solution of 0.150 M NH3:
Write the equation for the ionization of ammonia in water.
List all species present in the solution AND determine the concentrations of each.
Determine the pH of this solution.
Answers
The concentrations : 0.15 M
pH=11.21
Further explanationThe ionization of ammonia in water :
NH₃+H₂O⇒NH₄OH
NH₃+H₂O⇒NH₄⁺ + OH⁻
The concentrations of all species present in the solution = 0.15 M
Kb=1.8 x 10⁻⁵
M=0.15
[tex]\tt [OH^-]=\sqrt{Kb.M}\\\\(OH^-]=\sqrt{1.8\times 10^{-5}\times 0.15}\\\\(OH^-]=\sqrt{2.7\times 10^{-6}}=1.64\times 10^{-3}[/tex]
[tex]\tt pOH=-log[OH^-]\\\\pOH=3-log~1.64=2.79\\\\pH=14-2.79=11.21[/tex]
NEED HELP ASAP
1) Is Sulfur a metal or nonmetal? _______________________
2) Which family is Calcium in? _________________________
3) What is the Element’s name for the element that has the atomic number 72?
_______________________________________________________________
4) What is the atomic mass of Thallium? _________________________
5) What are all the atomic symbols for the Noble gases?
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
6) What are all the Element’s names in the metalloids?
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
7) What are all the atomic masses for the Actinides?
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
8)How many protons does Arsenic have? __________________
9) How many electrons does Radium have? ________________
10) How many neutrons does Nickel have? ________________
Answers
I'll see what I can do here...
1) Nonmetal
2) Calcium (Ca), chemical element, one of the alkaline-earth metals of Group 2 (IIa) of the periodic table.
3) Hafnium
4) 204.3833 u
5) Not sure what you're asking, but oble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og)
6) The metalloids; boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), polonium (Po) and astatine (At)
7) The Actinide series contains elements with atomic numbers 89 to 103 and is the third group in the periodic table.
8) 33
9) 88
10) 30
Hope this helps!
chemical formular of ammonium tetraoxosulphate 4
Answers
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
(NH4)2 SO4
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
The compound potassium carbonate is a strong electrolyte. Write the reaction when solid potassium carbonate is put into water
Answers
Answer:
K2CO3 (aq) ---> 2K+ (aq) + CO32- (aq)
Explanation:
Dissociation refers to the ability of an ionic compound to breakdown into its respective ions. An ionic compound is formed by the combination of a positive ion (cation) and a negative ion (anion). When these ionic compound dissolves in water, it dissociates i.e. separates into its constituent ions.
In this question involving potassium carbonate being described as a strong electrolyte, which means that it dissociates completely in water as follows:
K2CO3 (aq) ---> 2K+ (aq) + CO32- (aq)
The internal energy of reaction is -855.1). The reaction has a change of
temperature of 63.20°C that consist of 8.85g of material. Assume the
heat capacity of 2.650J/g °C. What is the work energy of this process..
Answers
The work energy of this process : 2337.298 J
Further explanationThe laws of thermodynamics 1 state that: energy can be changed but cannot be destroyed or created
ΔU=Q-W
Q=m.c.Δt
[tex]\tt Q=8.85\times 2.650\times 63.2=1482.198~J[/tex]
the work (W) :
[tex]\tt W=Q-\Delta U\\\\W=1482.198-(-855.1)=2337.298~J[/tex]
You witnessed a slide breaking while someone is using a microscope.The silde was not dropped.You are tasked with finding out why the slide broke.Explain
Answers
Answer:
See the answer below
Explanation:
The slide could have broken due to the ramming of the objective (especially the high power objectives) into the slide on the stage of the microscope while trying to bring the object on the slide into focus.
It is recommended to start with the lowest objective while trying to focus a slide. Thereafter, the next higher objective can be switched to and the image brought into focus once again. This can be repeated until the desired magnification of the image is reached.
However, at higher objective powers, the coarse adjustment knob should be avoided to avoid the objectives touching/breaking the slide. Instead, the fine adjustment knob should be used.
Hence, the breaking of the slide in the illustration could have been due to the use of the coarse adjustment knob at higher objective powers and the ramming of the objective into the slide.
1.
10
2.
3.
4.
60
Which polygons are similar?
110
60
10
01
02
03
04
Answers
Answer:
The answer is "1 and 4 polygons were similar".
Explanation:
In the given question, in both figures 1 and 4, it's measure angle were 10, 60, 110. In figure number 4, its angle is 10, 60, and on the third side, its value is equal to 110, which is (180 - 70).
Question 11. Identify the reducing agent
Sn+2 + AG 0 —> Sn0 + Ag+
Answers
Answer:
Ag 0 is the reducing agent.
Explanation:
Reducing -> gaining electrons
Oxidizing -> losing electrons
Ag lost electrons (became more positive) since it went from a 0 charge to a +1 charge. Therefore it was oxidized. Ag+ is the oxidized product. Reactants that create an oxidized product are called reducing agents. This would make Ag 0 the reducing agent in this reaction.
how do computers use input and output to get and give the imformation that tney need to solve problem
Answers
Answer:
Question of the Day: How do computers use input and output to get and give the information that they need to solve problems? Typing on a Keyboard (Input) Makes Letters Appear on a Screen (Output) Moving a Mouse or Touch Screen (Input) Changes What Appears on the Screen (Output)
1.562 g sample of the alcohol CH3CHOHCH2CH3 is burned in an excess of oxygen. What masses of H2O and CO2 should be obtained
Answers
Answer:
[tex]m_{CO_2}=3.709gCO_2 \\\\m_{H_2O}=1.898gH_2O[/tex]
Explanation:
Hello.
In this case, since the molecular formula of the given alcohol is C₄H₁₀O (molar mass = 74.14 g/mol), we can write its combustion reaction as shown below:
[tex]C_4H_1_0O+6O_2\rightarrow 4CO_2+5H_2O[/tex]
Thus, since there is a 1:4 mole ratio with carbon dioxide (molar mass = 44..01 g/mol) and a 1:5 mole ratio with water (molar mass = 18.02 g/mol), we can compute the obtained masses as shown below:
[tex]m_{CO_2}=1.562gC_4H_1_0O*\frac{1mol}{74.14gC_4H_1_0O} *\frac{4molCO_2}{1molC_4H_1_0O} *\frac{44.01gCO_2}{1molCO_2}=3.709gCO_2 \\\\m_{H_2O}=1.562gC_4H_1_0O*\frac{1mol}{74.14gC_4H_1_0O} *\frac{5molH_2O}{1molC_4H_1_0O} *\frac{18.02gH_2O}{1molH_2O}=1.898gH_2O[/tex]
Best regards!
An overhead view of two people at the start of a maze. The person in a purple shirt has a line running forward, right, backward, right, forward, ending with an arrowhead pointing to a large gold star. The person in a green shirt has a line running forward, right, backward, right, forward, right, backward, right, forward, ending with an arrowhead pointing to a small gold star.
Zamir and Talia raced through a maze. Zamir walked 2 m north, 2 m east, 4 m south, 2 m east, 4 m north, 2 m east, 3 m south, 4 m east, and 4 m north. Talia walked 2 m north, 6 m east, 3 m south, 4 m east, and 4 m north.
Compare their distances:
Zamir walked
meters and Talia walked
Answers
Answer:
Zamir walked
27
meters and Talia walked
19
meters.
Explanation:
27 and 19
Answer:
zamir:27 Talia:19
Explanation:
i got it right on my test :)
Which of the following is a renewable source of energy?
Answers
Answer: D
Explanation:
Hydropower
At 298 K and 1 atm which noble gas has the lowest density? Why?
1) Ne
2) Kr
3) Xe
4) Rn
Answers
Answer:
Ne
Explanation:
It has the lowest density.
Neon has the lowest density since it has the smallest atomic size and the lowest atomic number.
At a standard temperature of 298K and a pressure of 1 atm;The atomic density of an element refers to the number of atoms contained in an element per unit volume.
The size of an atom has an effect on atomic density. The size of an atom increases from left to right across the period and top to bottom down the group.
As such, on the periodic table, as we move from top to bottom down the group, the density of an atom increases.
The atomic element of the given elements are:
Neon (Ne) = 10Krypton (Kr) = 36Xenon (Xe) = 54Radon (Rn) = 36Therefore, we can conclude that Neon (Ne) will have the lowest density since it has the smallest atomic size and the lowest atomic number.
Learn more about the Periodic table here:
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which element forms the skeleton of this polymer?
a.carbon
b.copper
c.hydrogen
d.oxygen
Answers
Answer: A - Carbon
Explanation: Hope this helps!
A). Carbon
I hope this helped you ! :)
How did the instrument in the picture help to disprove part of Dalton's atomic model?
A)
It showed all matter is made of atoms and that atoms are indivisible and
indestructible.
B)
It showed that all atoms of a particular element are not identical.
C)
It showed that compounds are formed by a combination of two or more
different kinds of atoms.
D)
It showed that a chemical reaction is a rearrangement of atoms.
No
Answers
Answer:
It’s b;)
Explanation:
Answer:
B is correct
Explanation:
What does RAP mean (this for science this is counting atoms btw help if you can)
Answers
Answer:
rapid assessment procedure
Abbreviation for: rapid assessment procedure. Rapid Assessment Process. rapid atrial pacing. referrals, assessments and packages of care.
Explanation:
Hope this helps you
16.
One way stars are different from moons is stars
A.
move around planets, and moons do not
B.
are colder than moons.
C.
are rounder than moons.
D.
produce heat and light, and moons do not.
PLEASSE ANSWER ASAP
Answers
calculate the number of atom of K element in 122.5g of KClO3
Answers
Answer:
6.022×10²³ atoms of K
Explanation:
Given data:
Mass of KClO₃ = 122.5 g
Number of atoms of K = ?
Solution:
First of all we will calculate the number of moles of KClO₃ .
Number of moles = mass/molar mass
Number of moles = 122.5 g/ 122.5 g/mol
Number of moles = 1 mol
One mole of KClO₃ have 1 mole of K atoms.
Number of atoms of K:
1 mole = 6.022×10²³ atoms of K
Thus in 122.5 g of KClO₃ 6.022×10²³ atoms of K are present.
Which of the following elements can only form single covalent bonds when forming molecular compounds?
a) Nitrogen
b) Hydrogen
c) Carbon
d) Oxygen
Answers
Hydrogen can only form single covalent bonds when forming molecular compounds. Therefore, option B is correct.
What is covalent bond?A covalent bond is a type of chemical bond formed between two or more atoms in which electrons are shared between them. Covalent bonds usually occur between nonmetal atoms and are formed by the sharing of valence electrons.
Hydrogen can only form a single covalent bond because it has only one valence electron and needs one more electron to complete its valence shell, making it stable.
Nitrogen can form triple covalent bonds, carbon can form multiple covalent bonds, and oxygen can form double covalent bonds in molecular compounds.
Thus, option B is correct.
To learn more about the covalent bond, follow the link:
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#SPJ3
11
SKILL LEVEL
Proficient
Which substance conducts electricity in the liquid state but is a
poor conductor in the solid state?
a: Li₂O
b: SeCl2
C: P205
d: Hg
Answers
Answer:
a: Li₂O
Explanation:
Ionic compounds are good conductors only in liquid state. They do not conduct electricity in their solid state.
The only ionic compound from the given choices is Li₂O.
Ionic compound do not conduct electricity in their solid state because their ions are locked and are not free to move about their fixed lattice. In liquid states, they go into solution and they are free to move thereby acting as a good conductor.
A major contributor to the “hole” in the ozone layer:
A. carbon
B. nitrogen
C. fluorine
D. the polar vortex
E. the tilt of the Earth
Answers
Answer:
I think it's D, the Polar Vortex.
Answer:
A
Explanation:
Chlorofluorocarbons (from aerosols, and a type of carbon!) are super damaging to the ozone layer and actually breaks down the ozone particles!
Sorry! Reposting bc my answer got deleted, I'm assuming it's because I had a link to my source!
Is this an example of decomposition
2CH4 + 402 → 2C02 + 4H2O
Answers
Answer:
Identify each equation as a composition reaction, a decomposition reaction, or neither.
Fe2O3 + 3 SO3 → Fe2(SO4)3
NaCl + AgNO3 → AgCl + NaNO3
(NH4)2Cr2O7 → Cr2O3 + 4 H2O + N2
Solution
In this equation, two substances combine to make a single substance. This is a composition reaction.
Two different substances react to make two new substances. This does not fit the definition of either a composition reaction or a decomposition reaction, so it is neither. In fact, you may recognize this as a double-replacement reaction.
A single substance reacts to make multiple substances. This is a decomposition reaction.
Test Yourself
Identify the equation as a composition reaction, a decomposition reaction, or neither.
C3H8 → C3H4 + 2 H2
Explanation:
I hope I help :)))
The fact that atoms and molecules are always in motion helps scientists explain how solids turn into liquids. What is this explanation an example of? A.
a hypothesis
B.
an observation
C.
a scientific law
D.
a scientific theory
Answers
were are you guys 123456789789456123456789123456789456
Answers
How many formula units make up 20.6 g of magnesium chloride (MgCl2)?
Answers
Answer:The formula of magnesium chloride is MgCl2 . The molar mass of MgCl2 is (24.30 + 2 × 35.45) g/mol=95.20 g/mol .
Explanation:
