How to prepare 0.2mol of iodine in 13gram of the solution
Answer:
Hope this helps
Explanation:
Consider the energy diagram below.
A graph with Reaction Progression on the x axis and Energy on the y axis. A line starts low on the y axis; this section runs horizontally and is labeled A. It rises sharply to a high round peak labeled C. A dotted line continues the initial line to a higher peak Over C, labelled B, and then falls back to the original line, which continues horizontally; this section is labeled D.
Which statement best describes the diagram?
The catalyzed reaction passes through C.
The energy of the catalyst is shown by A.
The reaction pathway through B is faster.
The energy of the reactants with catalyst is at D.
The statement best describes the diagram is the catalyzed reaction passes through C. Therefore, option A is correct.
What is an energy diagram ?An energy profile is a theoretical representation of a chemical reaction or process as a single energetic pathway as the reactants are transformed into products in theoretical chemistry.
The amount of relative potential energy in each step of a reaction is depicted by an energy diagram. Reactants, transition states, and products are typically depicted on energy diagrams. It may also include intermediates and activation energy, depending on the reaction.
There are two lines on the energy level diagram. The blue line denotes ground state energy, while the red line denotes excited state energy. The horizontal axis represents orbital energy, and the vertical axis represents total system energy.
Thus, option A is correct.
To learn more about an energy diagram, follow the link;
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which of the followinh compounds has the highest percentage of hydrogen atoms by mass
Answer:
water
. Of the compounds listed in the question, water has the highest percent mass of hydrogen.
Hope it helps
Can someone please solve this????? It's true or false
Answer:
True true false true true true flase, false
Explanation:
A gas occupying a volume of 656.0 mL at a pressure of 0.884 atm is allowed to expand at constant temperature until its pressure reaches 0.510 atm. What is its final volume?
Answer:
1.14 × 10³ mL
Explanation:
Step 1: Given data
Initial volume of the gas (V₁): 656.0 mLInitial pressure of the gas (P₁): 0.884 atmFinal volume of the gas (V₂): ?Final pressure of the gas (P₂): 0.510 atmStep 2: Calculate the final volume of the gas
If we assume ideal behavior, we can calculate the final volume of the gas using Boyle's law.
P₁ × V₁ = P₂ × V₂
V₂ = P₁ × V₁/P₂
V₂ = 0.884 atm × 656.0 mL/0.510 atm = 1.14 × 10³ mL
Which molecule does not obey the Octate rule of valence electrons .
BeCl2
FeCl2
CuCl2
ZnCl2
Answer:
C po Hope it helps salamat
Calculate the number of moles in 23.8 grams of Nitrogen, N.
Group of answer choices
a 1.70
b 1.43x10^25
c 333
d 3.95x10^-23
Answer:
n = 1.7 moles
Explanation:
Given mass, m = 23.8 grams
Molar mass of Nitrogen = 14 g/mol
Let there is n number of moles. We know that,
No. of moles = given mass/ molar mass
[tex]n=\dfrac{23.8}{14}\\\\n=1.7[/tex]
So, there are 1.7 moles in 23.8 grams of Nitrogen.
Please help I’ll mark you as brainliest if correct
Answer:
Explanation: Okay what do you need help with im sure i can help.
Answer:
A
Explanation:
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In order to murder somebody in the bathtub, police say that the suspect would need at least 50,000 grams of water. Was there enough water? Can Steve be the murderer? 2 H2 + O2 -------> 2H20 Police said that there were 5,000 grams of H2 in the room. Convert grams of hydrogen into grams of water and see if there was enough.
Answer:
um, not sure how to answer this haha
Explanation:
How many Hg atoms are in 1.2mol Hg?
Plz tell me how you got it
Answer:
12
Explanation:
12
How many moles of the Htion in 395 mL of 1.325 M sulfuric acid (H2SO4).
Assume the acid fully dissociates.
Answer:
1.05 mol
Explanation:
Step 1: Given data
Molarity of sulfuric acid (M): 1.325 M (1.325 mol/L)Volume of solution (V): 395 mL (0.395 L)Step 2: Calculate the moles of sulfuric acid (n)
We will use the following expression.
M = n/V
n = M × V
n = 1.325 mol/L × 0.395 L = 0.523 mol
Step 3: Calculate the moles of H⁺
H₂SO₄ dissociates completely according to the following equation.
H₂SO₄ ⇒ 2 H⁺ + SO₄²⁻
The molar ratio of H₂SO₄ to H⁺ is 1:2. The moles of H⁺ are 2/1 × 0.523 mol = 1.05 mol.
Which of the following is the BEST title for the concept map shown above?
A. sexual reproduction in humans
B. mitosis in humans
C. meiosis in humans
D. sex cell formation in humans
Answer:
the answer is b mitosis in humans
Electric charges that build up in the clouds and on the ground result in what?
Question 1 options:
A.) Friction
B.)Rain
C.)Lightening
D.)Static Hair Syndrome
Answer:
C. Lightening
how many mols of K+ ions in 1.75 mol of K2SO4
Answer:
[tex]3.5 mol K^+[/tex]
Explanation:
Hello there!
In this case, since the mole-mole rations consider the amount of the specific ion in the whole compound, we can evidence that the potassium sulfate has two potassium ions in the molecule; in other words, there is a 1:2 mole ratio of the former to the latter; in such a way, we can perform the following proportional factor:
[tex]1.75molK_2SO_4*\frac{2molK^+}{1molK_2SO_4}[/tex]
So we cancel out moles of potassium sulfate to obtain:
[tex]3.5 mol K^+[/tex]
Best regards!
A structure that can lessen erosion is
Answer:
A structure that can lessen erosion is a plant cover :3
Explanation:
:3
list 5 of the signs that can identify the evidence of a chemical change.
Answer:
here are some ideas <3
Explanation:
burning of paper.
cooking of food
burning of wood
rotting of fruits.
frying egg
rusting of iron
mixing acid and base.
burning of candle
leaves changing color
melting of sugar.
baking
explosion of fireworks.
souring milk
digestion of food
fermentation
lighting matchstick
photosynthesis
decomposition of waste
How can you determine the number of protons and neutrons in an isotope when given the symbol and mass number?
What is an “eye spot”
Answer:
Usually small spot of color (as on the wing of a butterfly) that resembles an eye.
a light-sensitive pigmented spot on the bodies of invertebrates such as flatworms, starfishes, and microscopic crustaceans, and also in some unicellular organisms.
the best example of unbalanced forces is?
PLEASEEE HELP !!!!
what physical changes might happen in the aquaponic system
Calculate the pH of a 0.187 M solution of a base that has a Kb = 5.86x10^-6
Answer:
[tex]pH=11[/tex]
Explanation:
Hello there!
In this case, since the ionization of the described base is:
[tex]base+H_2O\rightarrow OH^-+baseH^+[/tex]
Thus, the equilibrium expression in terms of the reaction extent is:
[tex]Kb=5.86x10^{-6}=\frac{x^2}{0.187-x}[/tex]
Thus, by solving for x we obtain:
[tex]5.86x10^{-6}({0.187-x})=x^2\\\\1.10x10^{-6}-5.86x10^{-6}x-x^2=0[/tex]
So the values of x are:
[tex]x_1=0.0010M\\x_2=-0.0010M[/tex]
So the feasible answer is 0.0010 M, thus we compute the pOH:
[tex]pOH=-log(0.0010M)=3[/tex]
And therefore the pH:
[tex]pH=14-pOH=14-3\\\\pH=11[/tex]
Best regards!
According to one definition, what do bases do in solution?
A. They decrease the pH.
B. They increase the [OH-].
C. They donate protons.
D. They form conjugate bases.
Answer:
B. They Increase the [OH-]
Explanation:
Have a great day! :)
Taking into account the definition of the Arrhenius theory of acids and bases, the correct answer is option B. "Bases increase the concentration of hydroxide ions [OH⁻]"
Arrhenius theory of acids and basesAn Arrhenius acid is defined as chemical substances that contain hydrogen, and that when dissolved in water produce a concentration of hydrogen ions or protons (H⁺), increasing the concentration of H⁺ in the solution.
That is, according to Arrhenius theory, an acid is a substance that dissociates H⁺ ions in aqueous solution.
On the other hand, according to this Theory, a Arrhenius base is any substance that, when dissolved, releases hydroxyl ions (OH⁻).
SummarySo, the correct answer is option B. "Bases increase the concentration of hydroxide ions [OH⁻]"
Learn more about Arrhenius Theory:
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Black cloth will appear red through a red glass.
True or False
Answer:
false.
Explanation:
black overlays any color.
which of the following processes within the water cycle is responsible for changing water from a gas to a liquid
A. evaporation
B. condensation
C. precipitation
D. vaporization
Answer:
condensation is the process from which gas changes to liquid
What has more force? A semi truck traveling at 60mph or a minivan traveling at 60mph?
Answer:
Semi truck
Explanation:
Answer:
Minivan.
Explanation:
The answer seems like an obvious pick for the semi truck, but it's most likely the minivan. Let's compare them like this;
Let's say a 5'10, 160 pound man tackles you. His wide-spread body is hitting you all at once. Or the semi truck comparison. The hit is spread out and it has more weight along with it.
Now, the same guy punches you in your stomach. The punch will most likely hurt more because it's more concentrated on one spot. That's the minivan comparison. The minivan, being smaller, can only concentrate on one spot of the victimized target.
The semi truck may destroy it worse than the minivan, yes, but the minivan will have more force against the object due to the one concentrated point instead of the hit being spread out along the entire target.
Sometimes, the semi truck may be a greater foe, but the minivan would apply more force in more situations.
Hand lighters contain butane gas. If a hand lighter contains butane gas at 2.50 atm of
pressure at 293°K, then what would be the new pressure of the lighter if it were left in a
hot car at 393°K? If the lighter was designed to hold only 3.00 atm of pressure, would
it explode? Assume the volume does not change, until it possibly explodes!
Answer:
3.35 atm
Since P₂ > 3.00 atm, the lighter would explode.
Explanation:
Step 1: Given data
Initial pressure of butane gas (P₁): 2.50 atmInitial temperature of butane gas (T₁): 293 KFinal pressure of butane gas (P₂): ?Final temperature of butane gas (T₂): 393 KStep 2: Calculate the final pressure of butane gas
If we assume ideal behavior, we can calculate the final pressure of butane gas using Gay Lussac's law.
P₁/T₁ = P₂/T₂
P₂ = P₁ × T₂/T₁
P₂ = 2.50 atm × 393 K/293 K = 3.35 atm
Since P₂ > 3.00 atm, the lighter would explode.
Calculate the number of moles of NaCl contained in .5000 L of a 1.5 M (Molarity) solution.
Answer:
The number of moles of NaCl contained in 0.5000 L of a 1.5 M (Molarity) solution is 0.75 moles.
Explanation:
Molar concentration is a measure of the concentration of a solute in a solution, be it some molecular, ionic, or atomic species.
Molarity M is the number of moles of solute that are dissolved in a given volume.
The Molarity of a solution is determined by the following expression:
[tex]Molarity=\frac{number of moles of solute}{volume}[/tex]
Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].
In this case:
Molarity= 1.5 Mnumber of moles of solute= ?volume= 0.5 LReemplacing:
[tex]1.5 M=\frac{number of moles of solute}{0.5 L}[/tex]
Solving:
number of moles of solute= 1.5 M* 0.5 L
number of moles of solute= 0.75
The number of moles of NaCl contained in 0.5000 L of a 1.5 M (Molarity) solution is 0.75 moles.
How Many moles of oxygen(02) are needed to produce 4.6 g of nitrogen monoxide (NO)?
3.36 mol
0.768 mol
0.233 mol
0.192 mol
Answer: .768
Explanation:
I didn’t get this one right but that’s the answer.
Samantha plants some flowers in a flower bed and then ignores them. Soon weeds grow and the flowers die. The weeds had been able to get
enough resources to survive, while the flowers had not. This is an example of
O A) competition
OB) population size
OC) habitat
O D) community
Answer: The answer is actually competition
Explanation:
So she plants the flowers, then ignores them, not taking care of them. So when the weeds start to grow, and if they aren't pulled out, they start to steal the water from the flowers. So the flowers would try to take it back, but the weeds, because Samantha isn't taking care of them and pulling them out, keep growing. This lets the weeds take more water, causing the flowers to die.
100cm³of a solution of potassium hydroxide contains 0.56g of the dissolved solute. What is the molar concentration of this solution?
Answer:
[KOH] = 0.10M in KOH
Explanation:
Molar Concentration [M] = moles solute/volume solution in liters
moles KOH = 0.56g/56g/mole = 0.01mole
Volume of solution = 100cm³ = 100ml = 0.10 liter
[KOH] = 0.01 mole KOH / 0.10 liter solution = 0.10M in KOH