Answers
Answer: C, B, A
Explanation:
C is the initial solution, because naoh has not been added yet
B is the midpoint of the titration. naoh has been added to the solution, but it has not fully reacted yet. You can tell that this one is the midpoint because there is still HF- in the diagram, which is not one of the products formed in the reaction.
A is the endpoint because the diagram shows that all products are fully formed. There is an increased amount of Na+ and H2O in the diagram and no HF- left.
PS. I tested this answer on the concentration of acetic acid post-lab (from mcgraw hill) earlier today and it said this was the right answer :) hope this helps
The correct sequence of diagram from initial solution to the solution at the equivalence point of the reaction is C → B → A.
What is the equivalence point of the titration?In the equivalence point of the acid-base titration, amount of acid will equal to the amount of base and no other ions withh present except water and salts.
In the given question there is a titration between an acid (HF) and a base (NaOH).
Diagram C shows the initial solution of the reaction as in that only HF acid is present.Diagram B shows the mid step of the reaction, after adding the base (NaOH) on the initial solution. As in this solution with the water molecules, sodium and flouride ions as well as HF is also present.Diagram A shows the equivalence point of the reaction as in this point equal number of ions of acid and base are present with the water molecule.Hence, correct sequence is C → B → A.
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Related Questions
which of the following substances will cross the cell membrance through osomosis
Answers
Answer:Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ).
Explanation:
The Temperature of the earth gets______ as you get closer to the _______ and ________ as you move towards the_____
Answers
Read the etymology entry.
antagonize
antagonize (v.) 1630s, "to compete with" (obsolete); 1742, "act in opposition to, struggle against continuously,"
from Greek antagonizesthai "to struggle against, oppose, be a rival," from anti "against" (see anti-) + agonizesthai
"to contend for a prize," from agon "a struggle, a contest" (see agony). Meaning "make antagonistic" is by 1882.
What original language did the word antagonize come from?
O Greek
O Latin
O Middle French
O Middle English
Answers
Answer:
latin
Explanation:
im not sure sorry if wrong
Answer:
Greek
Explanation:
Mid 17th century (in the sense 'compete with'): from Greek antagōnizesthai, from ant- 'against' + agōnizesthai 'struggle' (see agonize).
The small flag indicating wind direction on a station weather plot points in the direction that the wind is going.
True or False
Answers
Answer:
False
Explanation: The wind's direction is shown by a long shaft. it will point to the direction from which direction the wind is blowing.
What is the mass/volume percent of a solution containing 32.6g of CaCl2 in 375mL of water?
Answers
The reaction is: Fe2O3 (s) + 2Al (s) → 2Fe (l) + Al2O3 (s)
What mass, in grams, of iron (III) oxide reacted to produce 4.5 mol of Al2O3 ???
Answers
Answer:
718.6 gm
Explanation:
The reaction is: Fe2O3 (s) + 2Al (s) → 2Fe (l) + Al2O3 (s)
What mass, in grams, of iron (III) oxide reacted to produce 4.5 mol of Al2O3
1 mole of Fe2Os produces 1 mol of Al2O3
so 4.5 mols Fe2O3 would produce 4.5 mols Al2O3
the molecular mass of Fe2O3 is
(2 X 55.85) + (16 X 3) =
111.7 + 48 =
159.7
4.5 mols Fe2O6 weighs
4.5 X 159.7 =
718.6 gm
check:
718.6 gm of Fe3O2
1. Assume samples that emit radiation are placed on a table across the room. Which sample will produce the greatest damage to you? Alpha emitter Beta emitter? Gamma emitter? WHY?
Answers
A question like this is quite nuanced, so let’s dive in.
Radiation that is made of charged particles (like alpha and beta) behave differently than radiation that is made up of neutral particles (like gamma). Charged particles are characterized by their “range”, which describes how far that particle can go through a medium (like air) before they lose their kinetic energy and become harmless. Alpha particles are relatively heavy and have a range of 1-10 cm in air at atmospheric pressure, so a sample that is an alpha emitter placed on the opposite side of the room will have exactly zero potential of dealing damage to you. You’re simply too far away. For a beta emitter, the range of beta particles is about 4 meters per MeV (a measure of the particle’s energy). This means that a low energy beta can reach you from across the room, and higher energy betas can easily reach you.
Neutral particles are not characterized by ranges, as they interact with matter differently. Instead, they are characterized by “half-thicknesses” based on an exponential attenuation function. The half-thickness of a material is the thickness of the material needed to reduce the intensity of the gamma rays to one-half the original intensity. Because of this, a gamma emitting sample will easily be able to affect you just like a beta sample would be. We now have to use something else to determine which will be worse.
In radiative studies, there exists a parameter for radiation types called the “quality factor”, which adjusts the value for radiation doses to account for the biological impact of each type of radiation. For example, if you were exposed to two different types of radiation with the exact same dose but one had a quality factor of one and the other had a QF of ten, then the radiation with a QF of ten did essentially ten times more damage than the other. Gamma rays have a quality factor of 1, whereas beta rays can have a QF anywhere from 1-20 based on their energy (higher energy = higher QF). Because of this, the beta emitter will likely do more damage than the gamma emitter.
Hope this helps!
The damage caused by the radiations has been maximum for the gamma radiations.
What are charged radiations?The charged radiations are comprised of the molecules that have been comprised of the charged particles. The charged particles have been alpha, beta or gamma radiation.
The damage that has been caused by the radiation has been found with the intensity of the quality factor and the thickness of the molecule that comprises the amount of damage formed.
The maximum quality factor has been for the gamma radiation. Thus, gamma radiations form the basis for the maximum damage.
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ARTICLE:
When Olafur Eliasson and Frederik Ottesen heard that more than 1 billion people on Earth don’t have access to electricity, they wanted to help. In many places, lack of electricity means students can’t study after dark and families can’t cook after the sun goes down. It’s also harder for doctors and nurses to treat patients without good lighting. Eliasson and Ottesen decided to invent a solar lamp that would provide light without costing a lot of money, polluting the air, or causing fires.
Their solution? The Little Sun lamp is a sun-shaped light with a light bulb on one side and a solar panel on the other. The Little Sun lamp uses energy to provide light to people who need it, but the Little Sun doesn’t make its own energy. To run, the lamp needs to get energy from somewhere else. In this case, that source of energy is the sun. The solar panel on the back of the lamp converts light energy from the sun into potential energy that can be stored in a battery and used later to make the light bulb shine. Little Sun lamps charge in the sun during the day and provide light at night, allowing people to study, cook, work, and take care of other things even after the sun sets. They’re inexpensive, don’t pollute, and don’t cause fires.
questions: 2) How does the Little Sun Lamp help people around the world get light?
3) How does the Little Sun Lamp use energy from the sun to make the light bulb shine?
Answers
Answer:
got light to charge from the sun
Explanation:
they did it so that people don't pollute the ozone layer and thats why they invent that and it help them in every way
. Why do we experience night and day? A. The moon blocks out the Sun during the night. B. The moon blocks sunlight from getting to one side of Earth. C.The side of Earth facing the Sun receives the sunlight. D.the side of Earth facing the Sun does not receive sunlight.
Answers
Hello Darling, it's because (C) The side of the Earth facing the Sun receives sunlight.
Hope this help~ ^^
Answer: C
The side facing the Sun receives the sunlight. The side that doesn’t face the sun downs’t recieve sunlight. The side that receives the sunlight experiences day, and the side that doesn’t receive sunlight experiences night.
:)
Please help I’m so lost!! Chemistry
Answers
Answer:
i will help you
Explanation:
if the reactions have more energy than the products this means that there is some energy that given outside and this reaction will called an exothermic reaction.
But if the reaction have less energy than the products this means that there is some energy that taken from outside and this reaction is called an endothermic reaction.
You are given a water-soluble compound X. Describe how you would determine whether it is an electrolyte or a nonelectrolyte. If it is an electrolyte, how would you determine whether it is strong or weak?
Answers
If the compound contains a metal cation or an ammonium cation, then the compound is ionic. Otherwise it is a molecular compound. Ionic compounds that dissociate completely in water are strong electrolytes. ... Molecular compounds that are weak acids are weak electrolytes.
CORRECT ME IF IM WRONG
HOPE IT HELPS:(
An electrolyte substances which, when dissolved in aqueous solution, dissociates into cations (+ ions) and anions (- ions).
Electrolytes can either be a weak or strong electrolyte depending on whether they can dissociate partially or completely.
Therefore, regarding the water-soluble compound X:
it is an electrolyte if it dissociates into its respective ions in an aqueous solutionThe compound is a weak or strong electrolyte depending on whether it dissociates partially or completely.Learn more about electrolytes at: https://brainly.com/question/14566383
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What are the causes and consequences of climate change
Answers
Answer: Humans are increasingly influencing the climate and the earth's temperature by burning fossil fuels, cutting down forests and farming livestock.
Explanation: This adds enormous amounts of greenhouse gases to those naturally occurring in the atmosphere, increasing the greenhouse effect and global warming.
PLEASE HELP IM FINNA GIVE POINTS AND BRAINLIEST ASSAPPPP
Answers
Answer:
it isn't clear for viewing
Why are coal, oil and natural gas called fossil fuels
Answers
The electron configuration of an element is shown below.
1s22s22p63s23p6
Name the group this element belongs to in the periodic table and explain your answer.
Based on the electron configuration, write one chemical property of this element.
Answers
The element belongs to group 18 and the element is chemically inert.
What is electron configuration?The term electron configuration refers to the arrangement of electrons in an atom. The electron configuration of an atom can show the group to which it belongs in the periodic table.
Given the configuration, 1s22s22p63s23p6 the element belongs to group 18 and the element is chemically inert.
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How does the Earth move within the Milky Way?
Answers
Answer:
The answer is in the explanation
(PLS VOTE ME AS BRAINLIEST!!!!!!!!!!!!!)
Explanation:
As Earth rotates on its axis, it orbits the sun, which orbits the center of the Milky Way, which itself is barreling through space.
what are the products of the reaction: Be(s)+ Cl2(g)⟶
Answers
Answer:
BeCl2
Explanation:
Be+Cl2=BeCl2
A balloon contains 0.76 mol O2, 0.18 mol Ne, 0.031 mol Xe and 0.026 mol CO2 at 749 mm Hg. What is the partial pressure of Ne
Answers
Answer:
ans given below
Explanation:
To keep simplicity, let's assume these gases behave ideally so we can use the equations for ideal gas. One of these equation is the Raoult's Law written below.
P* = xP
This is another form of the Raoult's Law where x is the mole fraction. Let's find x for O2.
x = 0.18/(0.76+0.18+0.031+0.026) = 0.1805
Partial Pressure = (0.1805)(749 mmHg) = 135.23 mmHg
Compuesto organico que no existe como alqueno ni alquino?
Answers
Answer:
Susssssssssssssssy
Explanation:
Sup
What happened a when you try to layer a more-dense solution on top of a less-dense solution
Answers
Answer:
the more dense solution will sink to the bottom the less dense solution will go to the top
Answer:
Explanation:The density of a liquid determines whether it will float on or sink in another liquid. A liquid will float if it is less dense than the liquid it is placed in. A liquid will sink if it is more dense than the liquid it is placed in.
Density of a liquid determines how it will layer (heaviest to lightest). If the liquid us least dense it float to the bottom. Layers will remain separated because each liquid is actually floating on top of the more dense liquid beneath it.
in metallurgy hydrogen reduce metal oxides to
Answers
Answer:
Considering the above series we can say that hydrogen can reduce only oxides of copper, mercury, silver and gold as these metals are less reactive than hydrogen.
What happens to the pH of a solution is the concentration of hydronium ions decrease
Answers
Aanlyze the potential energy diagram of the
reaction shown.
Which statements about the reaction are true?
Select all that apply.
The reaction is exothermic
The reaction is endothermic
The equation shows that 891 kJ of energy are
released as a product.
The equation shows that 891 kJ of energy are
absorbed as a reactant.
The graph shows that the reactants have greater potential energy than the products.
The answer is a,c,e
Answers
Answer:
A: The reaction is exothermic
C: The equation shows that 891 kJ of energy are released as a product.
E: The graph shows that the reactants have greater potential energy than the products.
Explanation:
The statement about the reaction is true:
A: The reaction is exothermic
C: The equation shows that 891 kJ of energy is released as a product.
E: The graph shows that the reactants have greater potential energy than the products.
What is potential energy?Potential energy is the energy that is saved in the body. It is used in the work and when convert into kinetic energy.
A moving item fundamentally possesses kinetic energy. Kinetic energy would therefore be created as a result of an object moving or an elastic band being released since the released object exhibits motion.
Therefore, the correct option is A: The reaction is exothermic, C: The equation shows that 891 kJ of energy is released as a product, and E: The graph shows that the reactants have greater potential energy than the products.
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what i compound is
FeI2
Answers
Answer:
iodide
Explanation:
Answer:
Iron(II) iodide
Explanation:
Pls answer.............
Answers
Answer:
Ductile
Explanation:
The metal is ductile, and that is why it can be stretched into wires.
What is the answer to this question
Answers
Answer:
(i) of protons
(ii) total number of both protons and neutrons
(b)they are neutral or have no overall charge because there are equal numbers of negative electrons to positive protons
Explanation:
Since both charges are equal, the number of positive protons cancels the number of negative electrons, thereby making the atom neutral
Write the equation that represents what happens when barium hydroxide dissolves in water. You do not need to include water as a reactant in the equation.
Answers
Barium hydroxide dissolves in water according to the equation: [tex]Ba (OH)_2 (aq) ---> Ba^2^+(aq) + 2OH^-(aq)[/tex]
When barium hydroxide is dissolved in water, it dissociates into its component ions completely. In other words, barium hydroxide dissociates into barium and hydroxyl ions just like every other strong base.
The equation for the dissociation in water is as follows:
[tex]Ba (OH)_2 (aq) ---> Ba^2^+(aq) + 2OH^-(aq)[/tex]
More on barium hydroxide can be found here: https://brainly.com/question/10094403
Answer:
Ba(OH)2 (s) --> Ba2+ (aq) + 2OH- (aq)
Explanation:
Barium hydroxide is a solid before it dissolves in water, and then becomes an aqueous solution during the reaction.
Which of the following corresponds to an alpha particle?
A. 1/4He
B. 3/2He
C. 2/2H
D. 4/2He
Answers
Answer:
D. 4/2 He corresponds to an alpha particle.
The molarity of an aqueous solution of CaCl is defined as the
Answers
Answer:
Molarity of aqueous solution of CaCl2 can be defined as moles of CaCl2 per litre of solution
what is the functional group and homologous series of ethyl butyrate?
Answers
Answer:
Functional group: ROR'
Homologous series: ester [C6H12O2]
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