Answer:
true
Explanation:
There are two electrons (in the 1s orbital) on both carbon and fluorine “shielding” the outer electrons from the full force of the nucleus and due to both atoms being approximately the same size (both period two) then it is this shielding effect and proton difference that is causing the electronegativity difference
why argon is octent ??
Answer:
argon is octet because it has eight electrons in its valence shell
Explanation:
which of the following are produced in the ozonolysis of the following molecule? the skeletal structure of a molecule with a smiles string of ccccCH3CH2COOH (CH3)2CHCOOH (CH3)2CHCH2COOH CH3CH2CH2COOH CH3CH2CH2CH2COOH
Propanedioic acid ((CH₃)₂C(O)COOH), oxalic acid (HO₂C-C(O)OH), and formic acid (HCOOH) are among the carboxylic acids created after the ozonolysis of ccccCH₃CH₂COOH.
What is ozonolysis?In an organic redox reaction known as ozonolysis, ozone is used to break unsaturated carbon-carbon bonds (double or triple bonds) in alkenes, alkynes, or azo compounds.
The molecule with the SMILES string ccccCH₃CH₂COOH can undergo ozonolysis to form a mixture of products. The ozonolysis reaction involves the cleavage of the carbon-carbon double bond by ozone (O₃) to form ozonide intermediates, which can then react further to form various products.
The ozonolysis of ccccCH₃CH₂COOH would result in the formation of several carboxylic acid products, including propanedioic acid ((CH₃)₂C(O)COOH), oxalic acid (HO₂C-C(O)OH), and formic acid (HCOOH). The exact ratio and amounts of these products depend on the specific conditions of the reaction, such as the concentration of ozone, temperature, and presence of any catalysts.
Therefore, the carboxylic acids produced in the ozonolysis of ccccCH₃CH₂COOH include propanedioic acid ((CH₃)₂C(O)COOH), oxalic acid (HO₂C-C(O)OH), and formic acid (HCOOH).
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What is the mass of 7 water molecules?
Which one is correct...
1: Food mass is stored as mass, and then destroyed
2: Food mass is stored as energy, and then destroyed
3: Food mass is stored as energy, and then transformed into energy
4: Food mass is stored as energy, and then transformed into mass
5: Food mass is stored as mass, and then transformed into mass
6. Food mass is stored as mass, and then transformed into energy
Answer:
Food mass is stored as mass, and then transformed into energy
Explanation:
When we eat food, the mass of food undergoes the digestion process and is being converted to various molecules in the body. For instance carbohydrate foods are broken down into glucose which is now stored in the body as glycogen.
When energy is required in the body, this glycogen is broken down into glucose again and mass is converted to energy required to do work in the body.
define Idea gas law
Answer:
P1*V1/T1=P2*V2/T2
I think this will help you
As more potassium sulfate dissolves in the water, the mixture becomes..
PLEASE HELP ME
Answer:
it will become heterogenous and as well asit will dissociate into ions
also it will form base and evolve h2gas
Answer:
the mixture becomes more concentrated
Explanation:
this is due to more solute ions of potassium sulphate than solvent ions of water
if 18.2 ml of 0.800 m hcl solution are needed to neutralize 5.00 ml of a household ammonia solution, what is the molar concentration of the ammonia?
The molar concentration of ammonia is 2.976M.
Molarity of HCl = number of moles/ volume
Number of moles = Molarity of Hcl * volume
Hence the number of moles of ammonia =\(14.88 * 10^{-3}\)
From question volume of ammonia =\(5 * 10^{-3}\)
Molarity = \(14.88 * 10^{-3}/5 * 10^{-3}\)
Molarity \(=2.976\)
What is meant by molar concentration?
Molar concentration is the most effective way of describing a solute concentration in a solution. Molarity is described as the total number of moles of solute dissolved per liter of solution,i.e., M = mol/L.
How do you calculate the molar concentration?
To calculate the Molar Concentration, we will find the molar concentration by dividing the moles by the liters of water used in the solution.
Thus, the molar concentration of ammonia is 2.976M
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Aluminum forms alloys with lithium(LiAl),gold(AuAl2),and titanium(Al3Ti). based on their crystal structures, each of these alloys is considered to be a substitutional alloy. The radii of the atoms are: Al: 143pm, Li = 152pm, Au = 144pm, and Ti= 147pm.
A) which alloys fit the general size requirements for substitutional alloys? check all that apply
Al3Ti
LiAl
AuAl2
Both Al3Ti and LiAl fit the general size requirements for substitutional alloys, as they have similar atomic radii. (A,B)
Al3Ti consists of aluminum and titanium atoms, which have atomic radii of 143pm and 147pm respectively, which are fairly close in size.
Similarly, LiAl consists of aluminum and lithium atoms, which have atomic radii of 143pm and 152pm respectively, which are also close in size. Because the atomic radii of both alloys are close, the atoms are able to fit into the lattice structure of the other atoms.
This allows for the atoms to substitute for each other, making for a substitutional alloy.
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If the brine contains 138 g of NaCl, how much Cl2 can be produced?
Answer:
167.5g
Explanation:
From the question, we know the mass of NaCl and the molar mass of NaCl, so we can calculate the number of moles of NaCl:
Moles = mass ÷ molar mass
The molar mass of NaCl can be calculated by adding the relative formula masses of the elements Na and Cl:
23.0 + 35.5 = 58.5
We can use the formula to find the number of moles of NaCl:
moles = 138 ÷ 58.5
= 2.35897...
Now, we need to find the mass of Cl2. Rearranging the formula of moles = mass ÷ molar mass
mass = moles × molar mass
Calculating the molar mass of Cl2 by adding the relative atomic masses:
35.5 + 35.5 = 71
Hence the mass is:
2.35897... × 71 = 167.5g (to 1dp)
What organelle is sac like and stores different materials?
Group of answer choices
endoplasmic reticulum
vacuoles
ribosomes
Golgi Body
Is Aushtin dating Summer please help
Answer:
uhm yes he made her pump go off
Explanation:
A group of scientists in Alaska notices that not only have atmospheric CO2 levels increased at their sampling site but so too have methane levels. What could account for this increase in methane levels
Answer:
The release of methane from thawed permafrost.
Explanation:
The complete question is
A group of scientists in Alaska notices that not only have atmospheric CO2 levels increased at their sampling site but so too have methane levels. What could account for this increase in methane levels?
- None of the answer options is correct.
- The release of methane from thawed permafrost.
-A decrease in beef production near the researchers' sampling area.
-The melting of permafrost accompanied by the thawing of methane-producing bacteria.
-The failure of rice paddies to be established in Alaska, given its climate.
Permafrost regions like the arctic circle hold a large supply supply of methane in their soils and their seas. Ordinarily, this methane should be gradually released naturally over a long period of time, but the effects of global warming is making these permafrost to thaw at a much faster rate, accelerating the release of methane into the atmosphere. The dark side is that methane is about 80 times more deadly when compared to CO2 in its contribution to the green house effect on earth.
Which set of substances contains only compounds?
Answer:
non metals are elements and elements are pure substances
Explanation:
Thinking about the definition of a weak acid, why do we see this difference?
Weak acid are only partially ionized in water
Use the atomic model below to answer the following questions: 1 pt for each blank
How many protons? How many neutrons? What is the name of this atom?
its a k12 test question TwT
Answer:
Explanation:
ALRIGHT EPIC GAMER IM GONNA INTRODUCE YOU TO THE AWESOME WORLD OF THE PERIODIC TABLE
look at this
6
C
Carbon
12.011
ok so this is what one block on the periodic table looks like
the protons and electrons are going to be the smaller number
so the protons and electrons for carbon are 6
but your question does not ask for electrons so its fine.
How many protons? LOOK AT THE SMALLER NUMBER IN ELEMENT BLOCK ON PERIODIC TABLE.
How many neutrons? Take the bigger number and subtract the smaller number from it. so it would be for carbon: 12.011 - 6 = 12 neutrons.
to find the name of the atom, just count the number of electrons and then look for the element with the same number to find the name
In Africa, the oxpecker is a bird that eats bugs and other parasites from the skin of a rhino. This helps protect the rhino’s skin and keeps the bird fed. Which of the following describes the type of relationship that exists between the oxpecker and the rhino?
Answer:
mutual relationship
Explanation:
pls mark brainliest
Fakeium has four isotopes found on Earth but they’ve only been recently discovered. Do your part as a scientist and calculate the average atomic mass for fakeium so it can be added to the periodic table.
Fa - 85 is 31% of all the isotopes found.
Fa - 86 is 12% of all the isotopes found.
Fa - 87 is 38% of all the isotopes found.
Fa - 88 is 19% of all the isotopes found.
CHOICES:
84.65 g
87.00 g
87.50 g
86.45 g
Answer:
86.45 g
Explanation:
Given data:
Percent abundance of Fa - 85 = 31%
Percent abundance of Fa - 86 = 12%
Percent abundance of Fa - 87 = 38%
Percent abundance of Fa - 88 = 19%
Average atomic mass of Fa = ?
Solution:
Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)+ (abundance of 3rd isotope × its atomic mass) + (abundance of 4th isotope × its atomic mass) / 100
Average atomic mass = (31×85)+(12×86) +(38×87)+(19×88) /100
Average atomic mass = 2635 +1032 +3306 +1672 / 100
Average atomic mass = 8645 / 100
Average atomic mass = 86.45
Hi! I produce proteins inside the cell. What am I?
Answer:
ribosome is the cell
Explanation:
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How many grams of Fe2O3 will be produced from 37.5 moles of iron?
37.5 moles of iron will produce 2990.31 grams of Fe₂O₃.
To determine the number of grams of Fe₂O₃ produced from 37.5 moles of iron (Fe), we need to use the balanced chemical equation for the reaction in which iron reacts to form Fe₂O₃.
The balanced equation for the reaction is:
4Fe + 3O₂ -> 2Fe₂O₃
From the balanced equation, we can see that 4 moles of iron react to produce 2 moles of Fe₂O₃. This means that the molar ratio between Fe and Fe₂O₃ is 4:2 or 2:1.
Now, we can set up a simple proportion to calculate the number of moles of Fe₂O₃ produced:
(37.5 moles Fe) * (2 moles Fe₂O₃ / 4 moles Fe) = 18.75 moles Fe2O3
So, 37.5 moles of iron will produce 18.75 moles of Fe₂O₃.
To convert moles to grams, we need to use the molar mass of Fe₂O₃. The molar mass of Fe₂O₃ can be calculated by adding the atomic masses of iron (Fe) and oxygen (O) in the compound:
(2 x atomic mass of Fe) + (3 x atomic mass of O) = (2 x 55.845 g/mol) + (3 x 16.00 g/mol) = 159.69 g/mol
Now, we can calculate the mass of Fe₂O₃ produced:
Mass = moles x molar mass
Mass = 18.75 moles x 159.69 g/mol = 2990.31 grams
Therefore, 37.5 moles of iron will produce 2990.31 grams of Fe₂O₃.
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The VSEPR model predicts the H-O-H bond angle in H3O+ to be A) 60° B) 90° C) less than 109.5° but greater than 90° D) 109.5° E) None of these
The correct answer is C) less than 109.5° but greater than 90°. This bond angle prediction based on the VSEPR model is consistent with experimental measurements.
The VSEPR (Valence Shell Electron Pair Repulsion) model is used to predict the shapes of molecules based on the number of valence electron pairs around the central atom. In the case of \(H_3O^+\), the central atom is oxygen, which has four electron pairs (three bonding pairs and one lone pair) around it. The VSEPR model predicts that these electron pairs will repel each other, resulting in a tetrahedral shape for the molecule. The bond angle between the three hydrogen atoms and the oxygen atom in \(H_3O^+\) can be predicted by considering the positions of the bonding pairs and lone pair around the oxygen atom. The lone pair occupies more space than a bonding pair due to its greater electron density, so it will push the bonding pairs away from it, reducing the bond angle.
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Which response strategy is the best choice for a heavy wet snow with 1 1/2-inch (3. 75 cm) of accumulation?
First, remove the snow using shovels or snow blowers, and then apply a deicing agent to prevent ice formation and improve traction on surfaces.
To determine the best response strategy for dealing with heavy wet snow with 1 1/2-inch (3.75 cm) of accumulation, consider the following terms:
1. Snow removal: Clearing snow from surfaces like roads, sidewalks, and driveways using shovels, snow blowers, or plows. In this case, snow removal may be necessary to maintain safety and accessibility.
2. Deicing: Applying deicing agents, such as salt or other chemicals, to surfaces to prevent ice formation and improve traction. For a heavy wet snow of 1 1/2-inch, deicing might be beneficial for slippery areas or those prone to refreezing.
3. Anti-icing: Pre-treating surfaces with chemicals before snowfall to prevent ice bonding and facilitate easier removal. Given the snow accumulation, anti-icing may not be the most efficient strategy.
The best response strategy for a heavy wet snow with 1 1/2-inch (3.75 cm) of accumulation would be a combination of snow removal and deicing. First, remove the snow using shovels or snow blowers, and then apply a deicing agent to prevent ice formation and improve traction on surfaces.
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if 1 mole of Zn contains 6.02 x 1023 atoms and 1 mole of Zn has a mass of 65.4 g. How many atoms are in 0.750 grams of zinc
There are 4.517 × 10²³ atoms in 0.750 grams of zinc.
Given,
1 mole of zinc = 6.022 × 10²³ atoms
Mass of 1 mole of Zn = 65.4 grams
We have to find the number of atoms present in 0.750 grams of zinc.
As we know, there are 6.022 × 10²³ atoms in 1 mole of a substance. The total atoms in an element are equal to Avogadro's number.
Where 6.022 × 10²³ is Avogadro's number
Then, 0.750 moles of zinc have 0.750 × 6.022 × 10²³ atoms.
0.750 × 6.022 × 10²³ atoms = 4.517 × 10²³ atoms
Hence, there are 4.517 × 10²³ atoms in 0.750 grams of zinc.
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Which of the following contains the same number of electrons as an atom of neon?
Cl-
Li
Li+
02
Answer:
D. \( O^{2-}\)
Explanation:
In Chemistry, electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.
Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others. Thus, this property is typically used to determine the chemical properties of elements.
Oxygen has a total number of eight (8) electrons and as such the \( O^{2-}\) is able to gain (receive) two (2) more electrons in order to have the same electron arrangements as the noble gas i.e an atom of neon that has a total number of ten (10) electrons.
Hence, \( O^{2-}\) contains the same number of electrons as an atom of neon.
1. How many cm are equal to 1.45 m?
2. How many kg are equal to 325 g?
3. How many mL are equal to .0024 L?
4. How many km are equal to 1.55 x 104 m?
5. How many mm are equal to 4.75 x 10-2 m?
6. How many cg are equal to 0.459 kg?
7. How many km are equal to 5,995 dm?
8. How many mg are equal to 450 g?
9. How many mm are equal to 0.003 dm?
10. How many ML are equal to 4.567 x 104 mL?
Explanation:
(1) 1 m = 100 cm
1.45 m = 100 × 1.45 cm = 145 cm
(2) 1 kg = 1000 g
325 g = 0.325 kg
(3) 1 L = 1000 mL
0.0024 L= 2.4 mL
(4) 1 km = 1000 m
\(1.55\times 10^4\ m=1.55\times 10^4\times 0.001=15.5\ km\)
(5) 1 mm = 0.001 m
\(4.75\times 10^{-2}\ m=4.75\times 10^{-2}\times 1000\ mm\\\\=47.5\ mm\)
(6) 1 kg = 100000 cg
0.459 kg = 45900 cg
(7) 1 dm = 10⁻⁴ dm
5,995 dm = 5,995 × 10⁻⁴ km
(8) 1 g = 1000 mg
450 g = 450000 mg
(9) 1 dm = 100 m
0.003 dm = 0.3 mm
(10) 1 mL = 0.001 l
4.567 × 10⁴ mL = 45.67 L
estions
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Check My Work (2 remaining)
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Jamal is a student in the health care professions class. He had a very exciting day at clinical and decided to post about
it on his social media account. He posted the following “Great day saving lives today! I did CPR and saved the patient!"|
Jamal did not post his location or the patient's personal health information; however, a friend of his (Dario) saw the
post and realized that his neighbor was in a similar situation that day, Dario called his neighbor's wife and inquired as
to his health. During the conversation, Dario told the wife that his friend was there and performed the CPR. The wife
reported Jamal to his program director,
Which law did Jamal violate?
Оа. НІРАА
b. FERPA
c. Affordable Care Act
d. None
Answer:
The correct option is;
a. HIPAA
Explanation:
The federal law which safeguards Personal Health Information (PHI) is the health Insurance Portability and Accountability (HIPAA) Act of 1996 with rules regarding the security, privacy and transmission (electronically) of medical health data, was passed to improve the ease healthcare movement between healthcare providers has also added new limitations on PHI disclosure
The HIPAA restricts with whom, when, how and where PHI can be disclosed including physically (direct in person or writing) or electronically (online, over the phone)
Therefore, Jamal had violated HIPAA.
Which component of the universe contains all of the other components listed below and would have the
greatest mass?
The galaxy is the component of the universe which contains all of the other components and would have the greatest mass.
What is a galaxy?A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity.The word is derived from the Greek galaxias , literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. Galaxies, averaging an estimated 100 million stars, range in size from dwarfs with less than a hundred million stars, to the largest galaxies known – supergiants with one hundred trillion stars,each orbiting its galaxy's center of mass.
Most of the mass in a typical galaxy is in the form of dark matter, with only a few percent of that mass visible in the form of stars and nebulae. Supermassive black holes are a common feature at the centres of galaxies.
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what is galvanization ?
Explanation:
The most common hot dipping process for industrial applications is galvanizing, which refers to the coating of zinc over iron or steels for rust proofing. It is an extremely versatile and easy means of providing corrosion protection for construction materials exposed to atmospheric conditions
How does slash and burn affect the earth's atmosphere?
Question 2 options:
less plants to take in carbon dioxide
more cows produce more carbon dioxide
less water for carbon dioxide to dissolve in
2 of the above
all of the above
Answer:There are many problems that result from this method of growing crops, including deforestation, a direct consequence of cutting down forests for crop land; loss of habitat and species; an increase in air pollution and the release of carbon into the atmosphere—which contributes to global climate change; and an increase
Explanation:
How is the movement of electrons between energy levels like climbing a ladder?
the inital concentration of ractant in a first-order reaction is 0.27m the concentration aftr 1.5s is 8.8 x 10^-2 m what is the half life for this reaction
0.753 is the half life for this reaction.
For First order reaction.
K = 2·303 log t the inital concentration of in a first-order reaction is 0.27m the concentration 1.5s is 8.8 x 10^-2 m.
where K → rate constant t → time Ao Initial concentration At Concentration after time t
half life period → when half of the reaction is completed x = 9/2 Representing the time taken
for half life of the reaction to be completed by equation becomes,
T1/2 = 2·303 / K log 2
T1/2 = 0.693 / K log 2
0.92 = 0.693 / K
K=0.753
A_{t} = (0.27m)/3109
Concentration of reactant after 1.5 seconds
At = 0.087mel / L
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