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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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.
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One kilometre equals to what centimeter
Answer:
100,000
Explanation:
1 kilometer equals 100,000 centimeters
You multiply the length value by 100,000
Answer:
One kilometre is 100,000 centimeters
Explanation:
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
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.
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.
Explain in writing how ionic bonds work using Sodium Chloride as an
example.
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.
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 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.
10. As part of the calibration of a new laboratory balance, a 1.000-g mass is weighed with the following
results
Trial
MS
1. 1.201 +0.001
2. 1.202 +0.001
3. 1.200 +0.001
The balance is???
Answer:
3
Explanation:
A structure that can lessen erosion is
Answer:
A structure that can lessen erosion is a plant cover :3
Explanation:
:3
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]
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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
Calculate the number of molecules in 4.0 mol H2O.
Answer:
the h20 of water if us water is for us which is for water and trees
Explanation:
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.
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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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
A balloon is filled at 0°C to a volume of 3.45L. The balloon then expands to 4.25L when placed in a 44°C room at a pressure of 0.97 atm. At what pressure was the balloon originally?
Answer:
1.0 atm
Explanation:
Step 1: Given data
Initial pressure (P₁): ?Initial volume (V₁): 3.45 LInitial temperature (T₁): 0°CFinal pressure (P₂): 0.97 atmFinal volume (V₂): 4.25 LFinal temperature (T₂): 44°CStep 2: Convert the temperatures to the Kelvin scale
We will use the following expression.
K = °C + 273.15
T₁: K = 0°C + 273.15 = 273 K
T₂: K = 44°C + 273.15 = 317 K
Step 3: Calculate the initial pressure of the balloon
We will use the combined gas law.
P₁ × V₁ / T₁ = P₂ × V₂ / T₂
P₁ = P₂ × V₂ × T₁ / T₂ × V₁
P₁ = 0.97 atm × 4.25 L × 273 K / 317 K × 3.45 L = 1.0 atm
what liquid is sour and can dissolve metal
if you don't understand that then you can use this sentence a liquid that is sour and can dissolve metal is considered a(n)
Answer: In essence, Boyle defined alkalies as substances that consume, or neutralize, acids. Acids lose their characteristic sour taste and ability to dissolve metals when they are mixed with alkalies. Alkalies even reverse the change in color that occurs when litmus comes in contact with an acid.
Explanation:
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
Fossilized remains of similar plant species were found in all four layers of the rock in the diagram above. Which of the following species would be MOST closely related?
A. species found in layer A and species found in layer D
B. species found in layer B and species found in layer D
C. species found in layer C and species found in layer D
D. species found in layer A and species found in layer C
Answer:
A and C
Explanation:
so D
What is the luminosity of a star?
A.
the measure of absolute magnitude
B.
the measure of its distance from the Earth
C.
the measure of radius of a star
D.
the measure of total energy output
E.
the measure of its surface temperature
Answer:
The correct answer would be:
D.
the measure of total energy output
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Have a nice day!
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!
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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how many grams of hydrogen gas will be produced if you start with 15.0 grams of zinc and an excess amount of HCl?
Answer:
1.8
Explanation:
In pea plants the allele for tall is dominant to the allele for short. What would be the phenotype of the parents of this cross?
A. short
B. One parent tall, one parent short
C. tall
D. medium
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
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what physical changes might happen in the aquaponic system
what is the function of eyepiece lens
Answer:
Eyepiece: The lens the viewer looks through to see the specimen. The eyepiece usually contains a 10X or 15X power lens. Diopter Adjustment: Useful as a means to change focus on one eyepiece so as to correct for any difference in vision between your two eyes.
Explanation:
plzzzzzz give brainly cuz
Answer:
some of them help with your vision and some help with eye problems like irritated