Answer:
hy do C-C bonds and C-H bonds have high potential energy levels? ... electronegativity so the electrons in the covalent bond are equally shared. Term. Which functional groups are commonly found on a carbohydrate? ... few organisms have the specific enzymes needed to break the bond in the B-form ...
Explanation:
Write the information provided by a balanced equation.
Answer:
2 Fe 2O 3 + 3 C → 4 Fe + 3 CO 2
Explanation:
yeap
Consider the following representation of a reaction mechanism.
Step 1: A+A → C+E (slow)
Step 2: E + B → A+D (fast)
Overall reaction: A + B → C + D
What should appear in the rate law for the reaction above?
A) only A and B because they are reactants in the overall reaction
B) only C and C because they are products in the overall reaction
C) only A because it is the reactant in the rate-determining step
D) only E and B because they are the reactants in the rate-determining step
Answer:
The rate determining step is step 1
Explanation:
In the rate law for the given reaction,
only A appears because it is the reactant in the rate-determining step.So, option C is correct one.
Which step is rate determining steps?The slowest steps is rate determining step of the reaction.It is because in rate determining step the intermediate is formed.What is intermediate ?The short lived species formed in the mechanism of reaction is called intermediate.The intermediates is formed in slowest step because it is unstable species.What is rate law for the reaction?The rate law is also known as rate equationIt is the expression that provides relationship between rate and concentration of the reaction in a chemical reaction.The rate law is determined by the experimentally.If the reaction occurs in multi steps then the rate of the reaction is depends upon slowest step of the reaction.learn about rate law,
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Are humans more similar to trees or bacteria? How do you know?(1 point)
A
Humans are more similar to bacteria because trees cannot move around their environment.
B
Humans are more similar to trees because bacteria are too small to see.
C
Humans are not similar to trees or bacteria. Humans are a special species that is not related to any other species on Earth.
D
Humans are more similar to trees because all plants and animals are part of the same domain.
Answer:
Humans and trees are interdependent - we breathe in oxygen and breathe out carbon dioxide, while trees take in carbon dioxide and release oxygen.
Humans have about a thousand genes similar to those of bacteria, presumably because the genes are so vital that their DNA structure has remained much the same over millions of years of descent from a common ancestor.
Explanation:
Where are most algae found?
on the surface of lakes
growing on the ocean bottoms
floating on water world-wide
in forests around the world
Answer:
on the surface of lakes
Explanation:
Why is balance important in organisms?
How many molecules are in 5.60 L of oxygen gas
Answer:
5.6L of O2 means we have 0.25 moles of O2. and as 1 molecule of O2 has 2 atoms, so, 1.50575*10^23 molecules will have 2*1.50575*10^23 atoms=3.0115*10^23 atoms of O.
Solve and show work. Li2S + 2 HNO3 --> 2 LiNO3 + H2S (a) Calculate the mass of lithium sulfide that will react with 250 mL of 0.65 M nitric acid (b) How many mL of 9.6 M HNO3 are needed to make 250 mL of 0.65 M HNO3 solution? (c) How many grams of nitric acid are needed to make 750 mL of 9.6 M HNO3.
Li2S + 2 HNO3 --> 2 LiNO3 + H2S
Li2 S + H2 N2 O2 --> Li2 N2 O5 + H2 S
Li S + H2 N2 O5 -> Li N2 O5 + H2 S
Li2 S2 + H4 N4 O10 --> Li2 N4 O10 + H4 S2
Li^2 S^2 + H^4 N^4 O^10 --> Li^2 N^4 O^10 + H^4 S^2
6) What causes the stars to give off light when ignited?
Answer:
When fireworks explode in the sky, the gunpowder reactions create a lot of heat, causing the metallic substances pres- ent in the stars to absorb energy from the heat and emit light. ... These electrons absorb energy from the heat, which causes them to move from their original ground-energy state to an excited state.
Explanation:
:))
The process which generates energy in sun and other stars is nuclear fusion. The emission of light energy is thus the result of fusion reaction taking place in stars.
What is nuclear fusion?Nuclear fusion is a chemical process in which two light nuclei or isotopes of an atom fuse together to form a heavy nuclei with the release of million tons of energy.
The process in which a heavy atom breaks into lighter atoms is called nuclear fusion and it is also releasing massive energy but less than the from fusion because, the breaking of chemical bonds needs some energy to absorb.
Fusing two chemical bonds is needs no more energy and it is an energy releasing process. Millions of hydrogen atoms and its isotopes fuse together in several steps and form helium atoms.
This process of release million tons of heat energy and light energy. This will make the stars glow.
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Give one safety precaution should take during carbon and lead oxide experiment
Answer:
use safety goggles
Explanation:
plz give me brainleist
Which type of molecule is shown below?
The type of molecule is to be considered as the option a. Alkyne. And, the same is to be considered.
What is alkyne?In terms of the chemical compound, Alkynes refer to Molecules which comprise of the triple bond that arise between 2 carbon atoms.
Also, the triple bond should be made up of one σ bond and two π bonds.
hence, The type of molecule is to be considered as the option a. Alkyne. And, the same is to be considered.
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4 Which pair of ions is isoelectronic?
A Ca2+ and 02-
B Na+ and 02-
OC Lit and Cl-
OD Mg2+ and CI-
Answer:
B. Na+ and O2-
Explanation:
Na+ plus has 10 electrons and O2- also has 10 electrons
Give 3 examples of a solution
Answer:
Comrade, figures, and sad
Explanation
The solution of sugar, salt etc in water.
Sublimation of substances like iodine, camphor etc into the air.
Hydrated salts, mercury in amalgamated zinc,
Alcohol in water, benzene in toluene
Plz help guys ASAP!
Thanks in advance
Answer:
3.6 moles
Explanation:
The balanced equation for the reaction is given below:
N₂ + 3H₂ —> 2NH₃
From the balanced equation above,
1 mole of N₂ reacted with 3 moles of H₂ to produce 2 moles NH₃.
Next, we shall determine the limiting reactant. This can be obtained as follow:
From the balanced equation above,
1 mole of N₂ reacted with 3 moles of H₂.
Therefore, 3.2 moles of N₂ will react with = 3.2 × 3 = 9.6 moles of H₂.
From the calculation made above, we can see that it will take a higher amount (i.e 9.6 moles) of H₂ than what was given (i.e 5.4 moles) to react completely with 3.2 moles of N₂.
Therefore, H₂ is the limiting reactant and N₂ is the excess reactant.
Finally, we the greatest quantity of ammonia, NH₃ produced from the reaction.
In this case, the limiting reactant will be use because all of it is consumed in the reaction.
The limiting reactant is H₂ and greatest quantity of ammonia, NH₃ produced can be obtained as follow:
From the balanced equation above,
3 moles of H₂ reacted to produce 2 moles NH₃.
Therefore, 5.4 of H₂ will react to produce = (5.4 × 2)/3 = 3.6 moles of NH₃
Thus, the greatest quantity of ammonia, NH₃ produced from the reaction is 3.6 moles
HELP IS IT:
A.
Model 2 is an isotope; Model 3 is an ion
B.
Model 1 is an ion; Model 3 is an isotope
C.
Model 1 is an isotope; Model 2 is an ion
D.
Model 1 is an ion; Model 2 is an isotope
Answer:
i thjink its b
Explanation:
If a 60 kg object is moving at a velocity of 10 m/s and it's 25 meters high off the ground what would if mechanical energy be?
Answer:
Like all questions in this sublevel, the work done by non-conservative forces must be related to the changes in energy of the object (see Physics Rules section above). In the case of the car skidding to a stop, the kinetic energy equation (see Formula Fix section below) can be used to determine the initial and final kinetic energy of the car. Since the car is on the ground, the height and potential energy can be regarded as zero.
Explanation:
10 points
What is the molar mass of argon?
Answer:
39.948 u
Explanation:
Please Help!
How is a pure sample of cobalt obtained
1. waves that use matter to transfer energy
2. rhythmic disturbance that carries
energy
3. waves in which matter in the medium
moves in the same direction as the wave
4. example of a compressional wave
5. example of a mechanical wave
6. The matter in the medium moves up
and down or back and forth at right
angles to the direction the wave travels.
7. waves that do not require matter
to carry energy
8. ripples on the surface of a pond
9.the matter though which a mechanical wave travels
10.vibration of vocal chords creates this
Definitions: a. Water wave
b. Compressional waves
c. Transverse wave
d. wave
e.mechanical wave
f. electromagnetic wave
g. Sound wave
h. medium
Please match all the terms in the right spot and btw you will be able to use the same term more then once’s
Answer:
1. e
2. d
3. b
4. g
5. g, a both work
6. c
7. f
8. a, d both work
9. h
10. g
Explanation:
Calculate the reaction rate given the following:
After 2 minutes (120 seconds), the concentration of a product was measured to
increase from 0.0012 M to 1.48 M.
1.48 M/s
0.0123 M/s
0.0012 M/s
-0.0123 M/s
Answer:
0.0123 M/s
Explanation:
The reaction rate is the rate at which the reaction takes place and results in an increased concentration of the products. The rate of the reaction is 0.0123 M/s.
What is the reaction rate?
The reaction rate is the increase of the concentration of the product with respect to time in seconds. The rate of reaction is given by,
[tex]\rm rate = \rm \dfrac {\Delta C}{\Delta t}[/tex]
Given,
Change in product concentration = 1.478
Time period = 120 seconds
Substituting values in the above equation:
[tex]\begin{aligned} \rm rate &= \rm \dfrac {\Delta C}{\Delta t}\\\\& = \dfrac{1.478}{120}\\\\&= 0.0123 \end{aligned}[/tex]
Therefore, option B. 0.0123 M/s is the reaction rate.
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PLSSS HELP
How is a balanced chemical reaction, like N2 +
3H2 --> 2NH3, similar to a recipe?
Answer: With each input, there is an output, a recipe requires certain ingredients, and certain amounts of each. A recipe calls for measurements, missing something can ruin it, just like a chemical formula, take something out or add something else, you get something completely different. when putting things together to make something you have to make sure what your putting in, will give you the product you want as the output.
Explanation:
What are 2 facts about neon
Which of the following is the correct chemical equation and is properly balanced for:
Iron III oxide reacts with potassium iodide to produce iron III iodide and potassium oxide
Answer:are there any abc or do you have to make an answer?
Explanation:
please help as soon as possible!
Answer:
1st one
Explanation:
Answer:
B
Explanation:
chlorine 2×3= 6 not sure
True or False: Different substances, like shortening and soap, will melt at the same temperature. True False
Answer:
false
Explanation:
different things will have different melting points
How many neutrons does calcium have?
.20. 60. 79. 40
Answer:
20
Explanation:
Atomic number/proton number = 20 (protons in nucleus)
Atomic mass number = 40 (protons + neutrons in nucleus)
40 - 20 = 20
What is the molarity of a solution with a 10.0 g AgNO3 dissolved in 0.5 L of solution ?
HELP ASAP Will Give Brainlist
The correct answer is actually
D. requires a lot of energy to become hot.
As the definition of specific heat is "the heat required to raise the temperature of the unit mass of a given substance by a given amount."
Which is the mass of 0.13 moles of potassium chloride, KCl
Answer:
9.69 grams
Explanation:
e
Answer:
9.69g KCl
Explanation:
[tex]0.13 molesKCl\frac{74.55gKCl}{1moleKCl} =9.69gKCl[/tex]
what dose the atomic number of an element represent
Answer:
No. of electrons of the element
366 Cal to kilowatt-hours, how to convert?
Answer:
0.000425 kilowatt hour