Answer:
7.28 moles Ag°
Explanation:
Cu° + 2 AgNO₃ => Cu(NO₃)₂ + 2Ag°
Given 7.28 moles 7.28 moles
To determine limiting reactant, divide the mole values by the respective coefficient of balanced equation. The resulting smallest value is the limiting reactant. Note: this is a short cut method for determining limiting reactant only. Once the limiting reactant is determined one must use the given mole values of the limiting reactant to solve problem. That is ...
Limiting reactant determination:
Cu° + 2 AgNO₃ => Cu(NO₃)₂ + 2Ag°
Cu: 7.28 / 1 = 7.28
AgNO₃ : 7.28 / 2 = 3.64 => Limiting Reactant is AgNO₃
Solving Problem depends on AgNO₃; Cu will be in excess.
Since coefficients of AgNO₃ & Ag° are equal, then the moles AgNO₃ used equals moles Ag° produced and is therefore 7.28 moles Ag°.
To start the chemical reaction, what must happen between the enzyme and the substrate?.
but-1-ene can be prepared from butan-1-ol. which type of reaction takes place?
Answer:
Dehydration Reaction
Explanation:
Alcohols can be converted into Alkenes using catalytic amounts of acids as a catalysts.
The water molecule is removed hence, it is called as dehydration reaction.
The reaction is attached.
Answer Questions 7-11 based on Figure 2.
Number of protons
_______
Number of Electrons
_______
Charge of Model
_______
7. How many protons are shown? ______________________
8. What element is it? ______________________
9. How many electrons are shown? ______________________
10. How many electrons are in the outermost energy level? ______________________
11. Is this an ion? _______________
12. If it is, calculate and record the charge. ______________________
Answer:
6. 10 protons
10 electrons
neutral
7. 10 protons
8. Neon
9. 10 electrons
11. No
12. it's not an ion
Explanation:
count the number of electron in the shells, the number of electrons is equal to the number of protons, which is equal to the atomic number
What properties does a wave model of light help
Answer:
There are three measurable properties of wave motion: amplitude, wavelength, and frequency.
Explanation:
A definitive experiment was Young's double slit experiment, which demonstrated that light shined at two slits in a screen show an interference pattern characteristic of waves of light, rather than particles.
Hydrazine (N2H4), a rocket fuel , reacts with oxygen to form nitrogen gas and water vapor. The reaction is represented with the equation: N2H4(l) O2(g) → N2(g) 2H2O(g) How many grams of hydrazine(N2H4) are needed to produce 96. 0g water(H2O)?.
85.33 grams of hydrazine is needed for the reaction.
Rocket fuel contains the reaction between hydrazine and oxygen to break and form nitrogen and water vapour along with steam as it is an exothermic reaction.
How to calculate the hydrazine amount?The reaction can be shown as:
[tex]\rm N_{2}H_{4}(l) + O_{2}(g) \rightarrow N_{2}(g) + 2H_{2}O(g)[/tex]
From the periodic chart, it can be said that:
Mass of nitrogen = 14 gmMass of oxygen = 16 gmMass of hydrogen = 1 gmThe molar mass of hydrazine will be:
[tex]\begin{aligned} \rm Molar \;mass \;of \rm \;N_{2}H_{4}&= 2(14) + 4(1) \\\\&= 32 \;\rm grams\end{aligned}[/tex]
Mass of water:
[tex]\begin{aligned}&= 2(1) + 16 \\\\&= 18 \;\rm grams\end{aligned}[/tex]
From the reaction, it can be said that,
1 mole of [tex]\rm N_{2}H_{4}[/tex] = 2 moles of [tex]\rm H_{2}O[/tex]
32 grams of [tex]\rm N_{2}H_{4}[/tex] = ? grams of water
[tex]\begin{aligned}\text{Gram of water} &= 18 \times 2\\\\&= 36 \;\rm gm\end{aligned}[/tex]
So, for 96 gm of water the hydrazine produced will be,
[tex]\begin{aligned}\text{mass of }\rm N_{2}H_{4} &= \dfrac{96 \times 32}{36}\\\\&= 85.3334 \;\rm grams \end{aligned}[/tex]
Therefore, 85.33 grams of hydrazine is needed for the reaction.
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formula for the following compounds:
chromium (VI) carbonate
vanadium (V) phosphate
Fe (II) sulfate
Cobalt (lll) sulfide
calcium (ll) acetate
vanadium (lll) oxide
chromium (lll) hydroxide
lithium phosphide
lead (lV) nitrate
silver bromide
Can someone help me with this please it's for friday? We are giving the VSEPR theory. I give 100 points.
Answer: Sulfite ion has a shorter
S-O
bonds.
Explanation:
The Lewis structure of
SO
3
is
SO3
SO3
(from chemistry.stackexchange.com)
It has a total of six σ and π bonds to the three
O
atoms.
The average bond order of an
S-O
bond is
6
3
=
2
.
The Lewis structure of
SO
2
−
3
is
It is a resonance hybrid, with a total of four σ and π bonds to the three
O
atoms.
The average bond order of an
S-O
bond is
4
3
≈
1.33
.
Since bond length decreases as bond order increases,
SO
3
is predicted to have the shorter bond length.
Sulfite
Sulfite
Explanation:
1. Balance the following equations:
(photo attached, just 1 a,b,&c)
Here are the answers
[tex]\\ \tt\hookrightarrow HCl+NaOH\longrightarrow NaCl+H_2O[/tex]
Already balanced[tex]\\ \tt\hookrightarrow H_2SO_4+2NaOH\longrightarrow Na_2SO_4+2H_2O[/tex]
[tex]\\ \tt\hookrightarrow 2HCl+Ba (OH)_2\longrightarrow BaCl_2+2H_2O[/tex]
Which statements about a sodium atom (22/11 Na ), are correct?
Does heat flow out of the atmosphere (Hout) change during a day?
Answer: The heat flows into Earth's atmosphere which changes as the Sun rises and sets, which increases during the day.
Explanation:
When atoms gain electrons, they can become larger, because the addition of an electron increases electrostatic repulsion.
True or false
Answer:True
Explanation: An anion has a larger radius than a neutral atom because it gains valence electrons. There are added electron/electron repulsions in the valence shell that expand the size of the electron cloud, which results in a larger radius for the anion.
hit the crown for me pls :)
Have a great day
how many molecules are in 1 mole of H2O
Answer:
A mole (mol) is the amount of a substance that contains 6.02 × 10 23 representative particles of that substance. The mole is the SI unit for the amount of a substance. There are, therefore, 6.02 × 10 23 water molecules in a mole of water molecules. Water (H2O) is made from 2 atoms of hydrogen and 1 atom of oxygen.
HELP!!
A friend notices that a nail that was left outside for a few months seems larger and heavier than it was before. He says it disproves the law of conser- vation of mass. Explain why he is wrong
Define atomic size(radius) :
1. Which of the following parts allow different activities of the cell to happen? A cytoplasm C vacuole B. lysosome D. vesicle 2. If the chloroplasts of a plant cell are damaged, which will it be unable to do? A protect the cell B. make food for the cell C. excrete waste materials D. give instruction for cell to reproduce
Answer: A. Cytoplasm
Explanation: Cytoplasm is a jelly, like material that fills up the remaining space in the cell. It is also responsible in making the shape of the cell. Without it, other parts of the cells or the organelles cannot make its function because it serves as the hallway of the transportation of the nutrients needed by each cell.
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What is the difference between the number of electrons on an atom of Magnesium (Mg) and an atom of Chlorine (Cl)? respond in numbers
The difference between the number of electrons on an atom of Magnesium (Mg) and an atom of Chlorine (Cl) is 5 electrons
Composition of MagnisiumMagnisium atom has the following composition:
Number of electrons = 12Number of protons = 12Number of neutrons = 12Composition of ChlorineChlorine atom has the following composition:
Number of electrons = 17Number of protons = 17Number of neutrons = 18Difference in electron number of magnesium and chlorineNumber of electrons in Chlorine atom = 17Number of electrons in Magnesium atom = 12Dinference =?Difference = Electron of Cl - Electron of Mg
Difference = 17 - 12
Difference = 5 electrons
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Do you think flowers are important to mankind? If yes explain why in your own words please
Answer:
Purity, power, and selflessness are all symbols associated with the flower. They aspire to lead the entire human species along the noble road. The receiver feels calmed and uplifted by the sight of lovely fresh flowers, which is why they have had a particular position in human history from ancient times.
Answer:
flowers are beauty of nature by the smell of flowers we fells something extraordinary something related to future ..
The graphs above show Maxwell-Boltzmann distributions for one-mole samples of Ar(g). Graph 1 shows the distribution of particle energies at 600 K. A student predicts that if the samples are combined in an insulated container and thermal equilibrium is attained, then the most probable particle energy will be between the most probable energy in graph 1 and the most probable energy in graph 2. Which of the following is the best justification for the student’s claim?
The Maxwell-Boltzmann distributions is a description of the speeds of different gases at the same temperature.
What is Maxwell-Boltzmann distributions?The Maxwell-Boltzmann distributions is a description of the speeds of different gases at the same temperature. Recall that at the same temperature, the relative speed of gas molecules is described by the Maxwell-Boltzmann distributions.
The question is incomplete hence we can not be able to show the exact relationship between the two graphs in order to arrive at a justification for the student's claim.
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Help me with 4 and 5. Its easy but i dont get it for 50 points
Answer:
You're analysing the G.H.E.D. system. It is a type of conjunctural process of making the formula of what is or why is the object making the reaction possible.
What are the negative aspects of using nuclear energy? Select all that apply.
A.risk of danger at reactor sites
B.adds waste heat to air and water
C.produces a great deal of air pollution
D.it creates solid radioactive waste that has to be stored safely over the long term
Answer:
D
Explanation:
Because chemicals like uranium are created as wastes which is not good for the environment
At Christmas time, I like to burn scented candles that smell like sugar cookies. How does the candle in one location change the scent in an entire room or space? What is this called?
Answer:
its called diffusion
Explanation:
so the air is a substance and then it mixes with another substance which is the scent of the candle then the particles mix together to make a mixture
Help I don’t understand it and I need the answers
Answer:
Demonstration 1 showed a chemical change because a new gaseous substance was formed, and demonstration 2 showed a physical change because liquid water became water vapor.
Explanation:
Chemical changes alter the chemical makeup of a subject, and a physical change only alters the appearance of a subject, not the chemical makeup.
1.which objects are in motion in this picture?
2. what is the unbalanced force in this picture?
3.what happened to the sledder in this picture?
Answer:
Object 1 and 3 are in motion.
Object 3 is in unbalanced form.
It is being snow rain and object 1 is sliding on water. Object 2 is in rest and object 3 is in motion blowing by air.
Object 1 and 3 are in motion , the unbalanced force is the force acting on object 3 and sledder is being acted upon by an external force.
What is motion?Motion is defined as a phenomenon which is described with respect to change in object's position with respect to time.It is given in terms of displacement,velocity,distance ,acceleration,speed.
Branch of physics which deals with motion of objects without any reference to it's cause is called kinematics while the branch which studies forces and their effects on motion is called as dynamics.
Motion applies to various systems like objects,bodies, matter particles ,radiation ,curvature.There are three laws of motion which are proposed by Newton.Classical mechanics is based on Newton's law of motion.Relativistic mechanics is based on modern kinematics.
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What should be done if acid is accidentally splashed on bare skin.
Answer:
she has to get a doctor to treat the acid from burning or going through the skin
Explanation:
What should you do after finishing work with a reagent bottle?.
Answer: What should you do after finishing work with a reagent bottle? Return the bottle to its proper storage location. Close the bottle. Which steps are necessary for cleaning a spill involving broken glass?
After finishing work with a reagent bottle, you should close the bottle and return the bottle to its proper storage location. The correct options are A and C.
What is a reagent bottle?Reagent bottles are bottles used for storing powders and chemical liquids. They are made up of plastic, glass, or borosilicate. They are also UV or light protective, with a tint of red color in the glass.
Now, they are light protective because of some chemicals each with light and causing an explosion. They should be kept in dark bottles and in kept in cupboards.
Reagent bottles should be kept closed always after use. They should be handled carefully, as they contain chemicals. These bottles are used in chemistry labs and other labs in schools and big laboratories.
Thus, the correct options are A, Close the bottle, and C. Return the bottle to its proper storage location.
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The question is incomplete. Your most probably complete question is given below:
Select one or more:
Close the bottle.
Place the bottle in the Solid Waste container.
Return the bottle to its proper storage location.
Leave the bottle open in case someone else needs
What's the chemical name of paracetamol?
Answer:
the chemical Name which paracetamol haveing is. N-(4hydroxyphenlyl)acetamide
Explanation:
thanks for question
What are the number of protons, electrons, and neutrons in one atom of titanium?.
Answer:
Protons: 22
Neutrons: 26
Electrons: 22
Explanation:
Titanium's atomic number is 22, meaning that the number of protons it has in its nucleus is also 22. # of electrons = # of protons, so the number of electrons is also 22. Titanium has an atomic mass of 47.867, but we can round up to 48. To find the atomic mass, we add up number of protons and neutrons. We know the number of protons as 22, so we subtract 22 from 48 and get a number of 26. Thus, the number of neutrons is 26.
Have a lovely rest of your day/night, and good luck with your assignments! ♡
Which compound contains ionic bonds?
1) N2O
2) Na2O
3) CO
4) CO2
Answer:
The ionic bond present between CaO molecule
Explanation:
By sprouting in the rainforest canopy, the strangler fig seedling is exposed to more
Answer:
Waxy leaves protect the strangler fig from drying winds and sunlight that it is exposed to high in the canopy. Perhaps the most amazing part of this extraordinary tree is its flower. What we think of as the fruit is really a hollow, flower-bearing structure called a cyconia.
What is the Hercules beetle’s scientific name?
Answer:
Hercules beetles, Dynastes hercules, occur in the new world tropics of Central and South America.
Explanation:
The southern Mexican border to west central Bolivia represent the species' northern and southern limitations, respectively.
