The AZX symbol of a cation with 13 neutrons is A = 24 , Z = 11 and X = Na+
What is AZX?AZX is a symbol which stands for;
A is the mass numberZ is the atomic number or the number of protonsX is the chemical symbol of the elementNote, cations are positively-charged ions having more protons than electrons due to loss of one or more electrons.
Sodium ion represented as Na+ is a cation which lost one electron. It has 13 neutrons and 11 protons.
But the mass number of an element, A is the sum of protons and neutrons of the element.
Thus, for Na+
A = 13 + 11 = 24
Z = 11
X = Na+
Therefore, the AZX symbol of a cation with 13 neutrons is A = 24 , Z = 11 and X = Na+
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What is the difference between, Flame tests and Flame emission spectroscopy?
Answer:
Flame testing is an analytical technique where a sample is applied to a flame, and the characteristic emission spectrum is used to identify different elements.
Answer:
Flame testing is an analytical technique where a sample is applied to a flame, and the characteristic emission spectrum is used to identify different elements. When this technique is used to identify metal species, it is called metal flame emission testing while Flame emission spectrophotometry is based on the characteristic emission of light by atoms of many metallic elements when given sufficient energy, such as that supplied by a hot flame.
Based on table n, uranium-238 and uranium-235 have different
a)decay modes
b)half lives
c)number of protons
d)number of electrons
According to table N, the isotopes uranium-238 and uranium-235 have different half lives.
What are radioactive nuclides?Radioactive nuclides are those nuclides that are able to undergo radioactive decay. They have specific modes of decay that is peculiar to each isotope.
Hence, according to table N, the isotopes uranium-238 and uranium-235 have different half lives.
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Which of these is a challenge related to nuclear fusion reactions?
A. Waste products have a longer half-life.
B. It is technically challenging to create these reactions safely and
efficiently.
C. The fuel for nuclear fusion is less available than uranium-235.
D. There is less of a chance of runaway chain reactions.
Answer:B
Explanation:got it right
The statement, "It is technically challenging to create nuclear fusion reactions safely and efficiently", is related to nuclear fusion reaction. Thus, Option B is correct.
This is due to the need to reach and maintain the extreme temperatures and pressures required for the reaction to occur and to confine and control the plasma in which the reaction takes place.
Nuclear fusion is a promising source of energy that has the potential to provide abundant, clean & sustainable power. However achieving nuclear fusion requires overcoming several challenges including the technical difficulties of creating and controlling the extreme conditions required for the reaction to occur.
Fusion reactions can produce high-energy neutrons that can damage the materials used to contain the reaction and require special handling and disposal. While progress has been made in developing fusion technologies, there is still much work to be done to make fusion a viable source of energy for the future.
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Identify the polarity of an H-I bond and the polarity of an S-S bond?
Answer:
5095 JULLITET LI\
Explanation:
What is the pH of a solution that contains 0.0003 moles of KOH in 410 mL of solution?
Answer: 10.865
Explanation:
The molarity of the solution is [tex]\frac{0.0003}{0.410}=0.0007317073 \text{ M}[/tex].
So, the pOH is [tex]-\log(0.0007317073)=3.135[/tex]
Since pH + pOH = 14, the pH is 14-3.135, which is about 10.865
If the pressure starts at 36 Kia what is the final pressure
answer:
is Well-Known Member. For a 35" you should be in the 28-32 range on road.
Explanation:
your welcome make brainlist
A gas cylinder contains exactly 1 mole of oxygen gas (O2). How many molecules of oxygen are in the cylinder?
The number of molecules of oxygen in the cylinder is 6.02×1023 molecules
Data obtained from the question
Number of mole of oxygen = 1 mole
Number of molecule of oxygen =?
From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.02×1023 molecules. This implies that 1 mole of oxygen contains 6.02×1023 molecules.
Since the cylinder contains 1 mole of oxygen, then the number of molecules of oxygen present in the cylinder is 6.02×1023 molecules.
Name all these please I need help. Write the names of the fallowing accoring to the IUPAC rules.
#1
You used red pen highlight which made things messier
The correct name should be.
9-methyl dec-1,2-dieneAs a methyl group attached with 9th carbon
#2
methyl group at 4
double bond at 2
4-Methyl Pent-2-ene#3
Three methyl groups are present
Double bond at 2
2,5,5-Trimethyl Hex-2-ene#4
2,5-Dimethyl Hept-3,5-diene#5
2,5-Dimethyl Hex-3-ene
Sodium hydroxide (NaOH) is a strong base that is very corrosive. What is the mass of 2.75 × 10-4 moles of NaOH?
3.24 x 10–3 g NaOH
1.10 x 10–2 g NaOH
6.10 x 10–2 g NaOH
6.50 x 10–2 g NaOH
The mass of 2.75 × [tex]10^{-4}[/tex]moles NaOH will be 1.1 x [tex]10^{-2}[/tex] grams
Mass/mole relationshipRecall that:
Mole = mass/molar mass.
Thus, mass = mole x molar mass.
In this case, the mole is 2.75 × [tex]10^{-4}[/tex] moles and the molar mass of NaOH is 40 g/mol.
Mass = 2.75 × [tex]10^{-4}[/tex]x 40 = 1.1 x [tex]10^{-2}[/tex] grams
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Answer:
Answer is option B or:
1.10 x 10–2 g NaOH
Explanation:
hope this helps! (edge)
What kind of scientist would study how mistletoe harms trees
Answer:
A Dendrologist! They are the type of Scientist that studie trees.
please ill mark u brilliant
+ 10 points
Check Your Learning
What mass of CO is required to react with 25.13 g of Fe2O3
according to the equation Fe₂O3 + 3 CO2 Fe + 3CO₂?
Answer:
convert the 25.13 g of Fe2O3 into moles by dividing by its molar mass (159.69) to get that. When looking at the stoichiometric coefficients, we can see that for every 1 mole of Fe2O3, there needs to be 3 moles of CO.
Explanation:
The elaboration likelihood model emphasizes the use of __________ persuasion and __________ persuasion methods. a. direct . . . elaborative b. peripheral . . . elaborative c. direct . . . peripheral d. indirect . . . direct
The elaboration likelihood model emphasizes the use of direct persuasion and peripheral persuasion methods.
What is direct persuasion and peripheral persuasion?
This theory involves a dual process which explains how attitudes are changed in individuals through persuasion.
These methods help in the formation of attitude which makes, in this case, option use of direct persuasion and peripheral persuasion.
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Answer:
C. direct . . . peripheral
Explanation:
Because I said so.
ANS THIS SMALL QUESTION
Select the correct answer.
a sample of an element was poured from one container into a second container. it took on the shape of the second container. it was then
cooled. after cooling, the element was removed from the container and kept its new shape. what happened to the atoms of the element wt
they were cooled in the second container?
oa. they began to escape into the air.
ob. they stopped being attracted to nearby atoms.
oc. they stopped moving past the atoms around them.
od. they began to move more quickly.
One atomic mass unit ( 1 amu)
is equal to the mass of a carbon-12 atom multiplied by the quantity
Answer: 1/12
Explanation:
A carbon-12 atom has a mass of 12 amu, so multiplying this by 1/12, we get 1 amu.
Compare the temperature change for cold sand and cold water when the same amount of hot water was added. what do you discover?
When the same amount of heat is added to cold sand and cold water, the temperature change of sand will be higher because of its lower specific heat capacity.
What is specific heat capacity?Specific heat capacity is the quantity of heat required to raise a unit mass of a substance by 1 kelvin.
Specific heat capacity of water and sandWater, c = 4,200 J/kg⁰C
Sand, c = 830 J/kg⁰C
Q = mcΔθ
where;
Δθ is temperature changeQ is quantity of heat addedΔθ = Q/mc
Thus, for an equal mass of water and sand, when the same amount of heat is added to cold sand and cold water, the temperature change of sand will be higher because of its lower specific heat capacity.
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Answer:t
Explanation:
a student used a vernier magnetic field sensor to measure the strength of the magnetic field generated by a bar magnet. at which position is the
strength of the magnetic field strongest point a or point b?
The position is the strength of the magnetic field strongest is is the place where the magnetic field leaves, being point A.
What generates a magnetic field?When an electrically charged particle moves, it creates a magnetic field. According to the laws of electromagnetism, this magnetic field originates from the variation of the electric field strength.
In the region of the poles we see that the lines of magnetic induction are closer to each other, therefore, we consider that close to the poles the magnetic field is more intense.
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How is polypropylene commonly used?
What is true about the breakdown of starch?
a.
Animals, but not plants, can break down starch.
b.
Organisms break down starch into carbon, hydrogen, and oxygen atoms.
C. Organisms break down starch into carbohydrate subunits.
d.
Starch breakdown is not a chemical reaction
Answer:
Option C
Explanation:
Organisms break down starch into glucose
Which is a carbohydrate subunitThe organisms are found in our digestive system helps in break down of starch and turns them into glucoseAnswer:
Organisms break down starch into carbohydrate subunits.
Explanation:
Starch is a necessary amount of our bodyIt is used as an carbohydrate subunit well known as glucoseIt is converted through organismsSo option C is correct
(i) Give the two dyes that are mixed to make brown hair dye.
Answer:
green n yellow and white and black and white sq
Why is the alkyl bromide substrate below not capable of undergoing an E2 elimination reaction upon treatment with potassium hydroxide (KOH) in ethanol (EtOH)
An E2 mechanism is not followed because an anti periplanar E2 elimination is impossible due to the lack of beta hydrogen.
What is elimination?The term elimination has to do with the removal of a proton from the substrate by a base.
This question is incomplete and the complete question showing the options have been shown in the image attached to this answer.
This elimination results in an alkene being formed. For the substrate alkyl halide shown in the question, an E2 mechanism is not followed because an anti periplanar E2 elimination is impossible due to the lack of beta hydrogen.
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Match the phase to the correct definition.
1.
Anaphase
2.
Prophase
3.
Metaphase
4.
Telophase
a.
Chromosomes line up at the center of the cell.
b.
The DNA is organized into connected rods called chromosomes.
c.
New cells begin to form.
d.
The chromosomes are separated and move to opposite sides of the cell.
Answer:
1.) Anaphase ------> D.) The chromosomes are separated and move to opposite sides of the cell.
2.) Prophase -------> B.) The DNA is organized into connected rods called chromosomes.
3.) Metaphase -------> A.) Chromosomes line up at the center of the cell.
4.) Telophase ------> C.) New cells begin to form.
1-3 gas stoichiometry! please help and put in steps in every problem. please help if u can
Answer:
um Im not sure what the heck that is
Which branch of chemistry would study how pollution effects marine life?
Answer: Environmental chemistry
Explanation:
What can you determine about the feasibility of a reaction if the enthalpy is positive and
the entropy is positive?
A. The Gibbs energy will always be positive, and the reaction will never be feasible.
B. The Gibbs energy will always be negative, and the reaction will always be feasible.
OC. The reaction could be feasible above a certain temperature.
D. The reaction will usually occur because it is unlikely the entropy will be greater than the enthalpy.
Reset Selection
If the enthalpy is positive and the entropy is positive, the Gibbs energy will always be positive, and the reaction will never be feasible.
What is the Gibbs Free Energy?The Gibb Free Energy is used to obtain the feasibility of a reaction. If the Gibbs free energy is positive the reaction is not spontaneous. If the value is negative, the reaction is spontaneous while a zero values indicates equilibrium.
From the equation;
ΔG = ΔH - TΔS, it follows that if the enthalpy is positive and the entropy is positive, the Gibbs energy will always be positive, and the reaction will never be feasible.
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Write the balanced equations for the following nuclear reactions.
ASAPPP
[tex]^{233}_{92}U\;\rightarrow\;^4_{2}He\;+\;^{229}_{90}Th[/tex] is the balanced equations for the following nuclear reactions.
What are balanced equations?A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same for both the reactants and the products
Uranium-233 is produced by the neutron irradiation of thorium-232. When thorium-232 absorbs a neutron, it becomes thorium-233, which has a half-life of only 22 minutes.
Hence, [tex]^{233}_{92}U\;\rightarrow\;^4_{2}He\;+\;^{229}_{90}Th[/tex] is the balanced equations for the following nuclear reactions.
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PLS I WILL GIVE BRAINLY How do the number of violence electrons of the light metals compared to those heavier than boron
The valence electron of the light metals are all in the range of 1 to 3.
What are Valence electron ?Valence Electron is the number of electrons in the outer shell of an atom which participate in bond formation.
Number of Valence Electron in Boron is 3 and other light metals lighter than Boron have 1 , 2 of Lithium and Beryllium respectively,
The valence electron of the light metals are all in the range of 1 to 3.
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What is the volume of a sample of mercury, a liquid metal, if it has a density of 14 g/ml and a mass of 28 g?
When adding sugar to tea, it was observed that the sugar kept dissolving. After a
minute, all of the sugar was completely dissolved, as no extra particles can be
added and be seen floating around. The mixture is then considered to be
Answer: When adding sugar to tea, it was observed that the sugar kept dissolving. After a minute, all of the sugar was completely dissolved, as no extra particles can be added and be seen floating around. The mixture is then considered to be
Explanation:
The molecule of mixture cannot be seen hence, it will be considered as homogeneous mixture.
What is molecule?
A molecule is just a collection of more than two atoms bound together by chemical bonds; depending on the context, the phrase doesn't have to include ions that meet this requirement.
What is homogeneous mixture?Solids, liquids, as well as gases, can all be homogeneous mixtures. Through, they have almost the same look and chemical makeup.
When sugar will be dissolved, the sucrose molecules get separated from one another. The materials that make up individual molecules stay together like sucrose molecules sucrose molecules, so the molecule will not break up.
Therefore mixture can be considered as molecule and homogeneous mixture.
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