A fusion reaction can be regarded as the type of reaction that occurs where two lighter elements come together in a type of reaction giving rise to a heavier/more massive element.
A fusion reaction always creates a more massive atomic nucleus (option c).
When the two lighter nuclei comes together in a reaction, a more heavier/massive nucleus is formed but its mass will still be less than the combined mass of the two reactant nuclei.
This also indicates that the left over mass may have been released as energy.
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If anhydrous mgso4 is the desired product, what is the atom economy of this reaction?.
This problem is referring to an anhydrous salt that is derive from a hydrated Epson salt (magnesium sulfate hydrate) and the atom economy is required. However, not enough information is provided, yet we can use the attached file as a reference to provide a methodology of calculation.
To begin with, we need to calculate the [tex]x[/tex] which refers to the degree of hydration of the salt, so that we use the mass before and after heating the sample to figure out the grams and subsequently moles of water that are in there:
[tex]m_w=3.648g-1.782g=1.866g\\\\n_w=0.103molH_2O[/tex]
Next, since 1.782g corresponds to the anhydrous salt, we calculate the moles in such a amount:
[tex]1.782gMgSO_4*\frac{1molMgSO_4}{120.4gMgSO_4}=0.0148mol[/tex]
Then, we divide the moles of water by those of the anhydrous salt to calculte [tex]x[/tex]:
[tex]x=\frac{0.103mol}{0.0148mol} =6.96=7[/tex]
This means the formula of the hydrate is:
[tex]MgSO_4\ 7H_2O[/tex]
Finally, for the atom economy we just divide the molar mass of the anhydrous salt by that of the hydrate:
[tex]A.E=\frac{120.4g/mol}{246.47g/mol} *100\%\\\\A.E=48.8\%[/tex]
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https://brainly.com/question/20796771the factor that governs the formula of an ionic compound such as ca3n2 is
Answer:
the charge or oxidation number on the cation and anion.
Explanation:
The factor that governs the formula of an ionic compound such as Ca3N2 is the charge or oxidation number on the cation and anion.
In the example, Ca has a +2 charge, N has a -3 charge
So we need 3 x ( +2) to balance 2 x (-3) and have an electrically neutral compound, so
+6 -6 =0
The factor that governs the formula of an ionic compound such as Ca₃N₂ is charge.
What are ionic compounds?Those compounds in which ionic bond is present between the cation and anion is known as ionic compound.
The most important factor that is essential for the formation of ionic compounds are charge i.e. positive charge and negative charge. In the given compound Ca₃N₂, Calcium (Ca) is present in the +2 oxidation state and Nitrogen is present in the -3 oxidation state. So due to attraction between these charges they make a ionic compound.
Hence charge is important factor.
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Why do metals form cations and nonmetals form anions?
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
Metals have tendency to loose electrons in order to get noble gas configuration, therefore they loose electrons to form Cations (positively charged ions)
for example ~ Sodium forms Na+
And
Non - metals have tendency to gain electrons in order to attain noble gas configuration , hence they gain electron from somewhere and bears a negative charge forming Anion.
for example ~ Chlorine forms Cl-
what is air pressure? In your own words
Answer:
The amount of force applied on an object that is moving in motion
Explanation:
How many grams of acetic acid are present in 250g of vinegar that contains 5.00% acetic acid?
a
A sample of gas has a volume of 3.50 L and a pressure of
125 mm Hg. What will the new pressure be when the volume
is decreased to 2.75 L? The temperature stays the same.
Answer:
159.09 mmHgExplanation:
The new pressure can be found by using the formula for Boyle's law which is
[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]
where
P1 is the initial pressure
P2 is the final pressure
V1 is the initial volume
V2 is the final volume
From the question we have
[tex]P_2 = \frac{125\times3.50 }{2.75} = \frac{437.5}{2.75} \\ = 159.090909...[/tex]
We have the final answer as
159.09 mmHgHope this helps you
Solid calcium hydroxide is dissolved in water until the pH of the solution is 11.44. The hydroxide ion concentration [OH–] of the solution is:______.A. 1.1 * 10-11 M.B. 3.06 M.C. 8.7 * 10-4 M.D. 1.0 * 10-14 M.E. None of these.
Answer:
c the answer is c that is the answer
What is an element? Arrow
Answer:
One arrow is positioned in each box according to Hund's Rule which tells us to maximise the number of unpaired electrons in orbitals of the same subshell, and, to give those electrons the same "spin" (parallel spin).
Explanation:
which of the following molecules can form hydrogen bonds with others like it?
Answer:
nitrogen, oxygen and fluorine
What is the unabbreviated electron configuration for Barium?
Answer:
[Xe] 6s2
Explanation:
hope it helps Electron configuration
Part 1. After learning about the different parts and functions of a meroscope you will now reflect on the importance of ench part citeit significance of each parts by naming it and answering the guide question
Explanation:
after learning more about the position and would
If you have a 100g of Boron and you want to find out how
many molecules of Boron you have, you would need to...
Answer:
5.57 x 10^24 atoms
Explanation:
first, you are seeking the number of ATOMS of Boron.
Boron has an Atomic mass of 10.8 g/mol (see #5 on the periodic table)
100 gm of Boron would have 100 g /10.8 g/mol =9.26 moles
each mole has Avogadros number of atoms 6.02 x 10^23
9.26 moles has 9.26 x 6.02 x 10^23 atoms =5.57 x 10^24 atoms
How many cl- ions are there in 2. 50 kg of barium chooride.
Which of the following correctly lists the particles in order from least massive to most massive.
A. electron, proton, hydrogen atom, helium atom
B. proton, electron, hydrogen atom, helium atom
C. proton, helium atom, hydrogen atom, electron
D. hydrogen atom, electron, helium atom electron
Answer:
The ans is : A. Electron, proton, hydrogen atom, helium atom.
An atom consist of sub atomic particles. The order of particles from least massive to most massive is electron, proton, hydrogen atom, helium atom. The correct option is A.
What are subatomic particles?The particles which are smaller in size than the atom are known as the sub atomic particles. An atom generally contains three sub atomic particles, they are protons, electrons and neutrons. The electrons revolve around the nucleus whereas the protons and neutrons are present at the center of the nucleus.
The protons are positively charged particles whereas the electrons are negatively charged. The neutrons are chargeless. The atomic number of 'H' atom is 1 and that of 'He' atom is 2.
The mass of e⁻ is 9.1 × 10⁻³¹ kg, proton is 1.67 × 10⁻²⁷ kg, 'H' atom is 1.66 × 10⁻²⁴ g, 'He' is 4 g. Thus the order is:
electron, proton, hydrogen atom, helium atom
Thus the correct option is A.
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Shanika is an engineer at an amusement park who is experimenting with changes to the setup for a magnetic roller coaster ride. In one ride, there are two identical roller coaster cars (orange and green) that start on opposite sides of a large magnet located at the center of a station. Shanika wants to get the largest increase in potential energy she can by moving one car one space to the left or the right. Shanika can move the orange car to point A or point B, or she can move the green car to point C or point D. Which movement should she make? Why will that movement result in the largest increase in potential energy? Describe the magnetic force that will act on the roller coaster car she moves. What should I do for the Green cart?
The orientation of the poles of the magnet on the cars and the large
magnet are like poles.
The correct responses are;
First question
Move the orange car from A to B Move the green car from D to CSecond question:
The reason is reducing the distance increases the magnetic field strengthThird question:
It pushes the cars away in the opposite direction.
Fourth question:
Place the green car at point C to get the largest potential energyReasons:
Potential energy is the energy an object has due to its location.
Energy is a product of force and distance, and therefore, if the force,
experienced by the object increase, the potential energy of the object
increases.
The strength of a magnetic field, B, is given by the formula;
[tex]\displaystyle B = \frac{\mu_0 \cdot I}{2 \cdot \pi \cdot d}[/tex]
Where;
B = The magnetic field strength
I = Current
d = The distance from the source of the magnet
μ₀ = The permeability of free space = 4·π × 10⁻⁷ T m/A
Therefore, the strength of the magnet is higher closer to the source.
First question
In a magnet, like poles push each other back, and given that the poles of the magnet adjacent to each other are like poles, to get the largest increase in she should move the cars towards the large magnet.
Move the orange car from A to B Move the green car from D to CSecond question:
The reason why the movement will result in the largest increase in potential energy is because like polls repel each other and the strength of a magnetic field increases closer to the magnet
Third question:
The magnetic force that will act on the roller coaster car moved towards the large magnet, pushes the car in the opposite direction.
Fourth question:
The green cart should be moved from point D to point C to get the largest potential energy
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An unknown element sample has 2 isotopes present. The first isotope has a mass of 6.017 amu and is
7.30% abundant. The second has a mass of 7.018 amu and an abundance of 92.7%. Calculate the
average atomic mass of this element
Answer:
Calculating Atomic Mass
Change each percent abundance into decimal form by dividing by 100. Multiply this value by the atomic mass of that isotope. Add together for each isotope to get the average atomic mass.
Explanation:
have a nice day
pls help! Two galaxies on opposite ends of the universe are moving away from the Earth. Each has a velocity of 200,000 km/s relative to the Earth. How fast would an observer in one of those galaxies see the other galaxy moving away?
A.200,000 km/s
B. between 300,000 and 400,000 km/s
c. between 200,000 and 300,000 km/s
D. 400,000 km/s
An observer in one of those galaxies see the other galaxy moving away at 400000 km/s.
Relative velocity is the velocity of an object with respect to another object, that is the time rate of change of relative position of one object with respect to another object.
Since two galaxy are moving in opposite directions with a velocity of 200,000 km/s. Hence the relative velocity between the two galaxies is 400000 km/s (200000 + 200000)
Therefore an observer in one of those galaxies see the other galaxy moving away at 400000 km/s.
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Answer:
D 400,000km/s
Explanation:
22) Calculate the energy of a photon of radiation with a frequency of 9.50 x 1013 Hz.
The energy of the photon with a frequency of 9.50×10¹³ Hz is 6.29×10¯²⁰ J
From the question given above, the following data were obtained:
Frequency (f) = 9.50×10¹³ Hz
Planck's constant (h) = 6.626×10¯³⁴ Js
Energy (E) =?The energy of the photon can be obtained as follow:
E = hf
E = 6.626×10¯³⁴ × 9.50×10¹³
E = 6.29×10¯²⁰ JTherefore, the energy of the photon is 6.29×10¯²⁰ J
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Add 2 teaspoons of baking soda and 2 teaspoons of citric acid to the foam cup. Add the half cup of water to the cup and stir. What is the temperature?
Answer:
Test for carbon dioxide gas.
The reaction between baking soda and citric acid will form sodium ions, citric acid ions, carbon dioxide gas, and water. So all you have to do is add the gas produced (by gas displacement method or something) and test whether the gas is carbon dioxide, with lime water or other methods like hydrogencarbonate indicator. Hope this helped!
Explanation:
Answer:
depends on amount, but the reaction's endothermic (meaning its cold, absorbs heat from surroundings)
I hope it helps.
You have a sealed 2 liter flask that contains nothing but water and carbon dioxide. The flask is half-filled with liquid water, has a temperature of 25°c, and the overall pressure within the flask is 0. 1 atm. How many moles of co2 are in the flask? at this temperature, you may take the kh value for co2 as 0. 033 m / atm.
In this exercise we want to calculate the amount of moles, so this is going to be:
[tex](4.6)(10^{-3}) \ mols \ CO_2[/tex]
Knowing that Henry's law is given by:
[tex]C = KHP[/tex]
Where constants are given by:
C = Concentration KH = Henry's law constant = [tex]0.033 m/atm[/tex]P = partial pressure = [tex]0.07 atm[/tex]Before we can find the concentration of CO2 (and hence the moles of CO2), we first need to find its partial pressure. We look up the vapor pressure of water at 25º and find it to be 0.03 atm. Since the total pressure is equal to 0.1 atm, this mean the partial pressure of:
[tex]CO_2 = 0.1 \ atm - 0.03 \ atm = 0.07 \ atm[/tex]
Now using Henry's law, we find the concentration:
[tex]C = (0.033)*( 0.07) = (2.31)*(10^{-3})[/tex]
Converting to moles of CO2, we have:
[tex](2.31)*(10^{-3})*( 2) = (4.6)*(10^{-3})[/tex]
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what is the periodic trend for electronegativity
Answer:
mark me brainlest
Explanation:
Electronegativity values generally increase from left to right across the periodic table. Electronegativities generally decrease from top to bottom of a group. The highest electronegativity value is for fluorine.
Answer:
"Electronegativity increases as you move from left to right across a period because the number of charges on the nucleus increases." (sstudy30 on Quizlet)
Explanation:
It explains itself haha!
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
a. What are the half-reactions for the redox reaction CuCl2 + Zn → ZnCl2 + Cu? Label the oxidation
reaction and the reduction reaction. (1 point)
PLS HELP 100 points
The oxidation half equation is Zn ------> Zn^2+ + 2e while the reduction half equation is Cu^2+ + 2e------> Cu.
A redox reaction is a reaction in which there is a loss/gain of electrons. The specie that gives out electrons experiences an increase in oxidation number while the specie that gains the electrons experiences a decrease in oxidation number.
For the reaction; CuCl2 + Zn → ZnCl2 + Cu
The oxidation half equation is;
Zn ------> Zn^2+ + 2e
The reduction half equation is;
Cu^2+ + 2e------> Cu
The chloride ion is excluded because its oxidation number does not change from left to right in the reaction.
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why does helium fusion require higher temperatures
Answer:
Nuclear fusion of hydrogen to form helium occurs naturally in the sun and other stars. It takes place only at extremely high temperatures. That's because a great deal of energy is needed to overcome the force of repulsion between the positively charged nuclei.
Explanation:
hope it helps
How can you improve your ability to see the indicator color change at the endpoint of a titration?.
Answer: Place a piece of white paper under the analyte flask throughout the titration
Explanation:
The end point of titration can be made easy by the use of indicators. But we have to be keenly observe for each drop from the burette because, the colour change will be sudden for a drop.
What is titration?Titration is an analytical technique used to determine the unknown concentration using a standard reagent of known concentration. The standard reagent of known concentration is called titrant and the one to be determined is called analyte.
Usually analyte is taken in a conical flask and titrant in a burette. The end point of titration is the point at which the reaction is completed in perfect stoichiometry.
In acid-base titrations, the indicators used having different colors in different pH. Hence, the indicator in the analyte will change in color when the acidity of the medium changes. We have to observe keenly for the color change because it happens for any drop.
The adding of titrant from the burette must be dropwise and thus we can get a time to notice the sudden colour change of indicator.
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If i initially have a gas with a pressure of 84 kpa and a temperature of 350 c and i heat it an additional 230 degrees, what will the new pressure be? assume the volume of the container is constant.
Answer:
67.824
Explanation: You want to use the combined gas law equation (P1*V1)/(n1*T1)=(P2*V2)/(n2*T2). So first cross out what remains constant, so volume(V) and I assume moles (since it was not mentioned as a change). Then you can solve algebraically for the answer!
Hope this helped!
The new pressure will be 139.2 kpa .
What is the combined Gas Law?According to combined gas law,
[tex]\rm\dfrac{PV}{nT} = R[/tex]
In the Combined Gas Law,if we change either one of the variables the others will also change.
When the moles of the gas is constant , the above equation can be written as ,
[tex]\rm \dfrac{P'V'}{T'}= \dfrac{PV}{T}[/tex]
Given is P = 84kpa , T= 350⁰ C and T' = 350+230=580⁰ C , V=V' , P'=?
So we will substitute the values in the above formula keeping volume constant.
[tex]\rm \dfrac{P'}{T'}= \dfrac{P}{T}[/tex]
[tex]\rm\dfrac{P'}{580}= \dfrac{84}{350}[/tex]
[tex]\rm P' = \dfrac{84\times 580}{350}[/tex]
[tex]\rm P'= 139.2 \;kpa[/tex]
Therefore the new pressure will be 139.2 kpa .
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Convert 1.56x10^30 particles of sodium chloride to grams of sodium chloride
Answer:
I cannot tell yet
Explanation:
I don't take that class yet but ill get back to you
How are mitosis and meiosis similar? How are they different? Provide 1 way the two processes are the same and 2 ways the 2 processes are different.
Answer:
Similar: both processes of cell division; both processes take place in the nucleus of the cell
Different: mitosis divides into 2, meiosis divides into 4; one is the division of body cells and the other is of specifically sex cells
Explanation:
https://byjus.com/biology/mitosis-and-meiosis/
^ this has more info!
What mass of water absorbs 6700 J of heat to raise the temperature from 283K to 318K?
Answer:
you did not give the specific heat like formula like it takes 1kj to raise 28grams of water by 10 grams
Which type of dry-chemical fixed application method introduces a concentration of agent into a closed area
Actuating mechanism is the dry-chemical fixed application method which
introduces a concentration of agent into a closed area.
The actuating mechanism is commonly used in piping systems and
involves the transport of a control member in automatic or remote control
systems.
The closed system makes manual navigation very difficult which is why the
actuating mechanism in automatic systems are usually used to make it less
tedious and accurate.
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How do mixtures differ from substances?
Answer:
In chemistry: a pure substance consists only of one element or one compound. a mixture consists of two or more different substances, not chemically joined together.
Hope this helps :)
