Explanation:
octet is an atom or an ion having a maximum of eight electrons in the outermost shell while duplet is an atom having the maximum of two electrons in the outermost shell
If the [H3O+] of a solution is less than the [OH-], what can be said about the solution?
(A) The solution would have a higher pH than its pOH.
(B) The solution could still have a neutral pH.
(C) The solution would have a higher pOH than its pH.
(D) The solution would be basic only if the solution contained a weak acid.
Answer:
I was looking for this same answer.
Explanation:
If the [H₃O⁺] of a solution is less than the [OH⁻], then the solution would have a higher pH than its pOH.
How pOH is define?pOH is define as the negative logarithm of the concentration of OH⁻ ion and for a basic solution its value should be less than 7.
In the question it is clear that concentration of H⁺ ion is les than the concentration of OH⁻ ion, so the given solution is basic in nature. Basicity of basic solution is calculated by using the pOH scale and for this solution value of pOH is less than 7, because more than 7 shows the acidic character. And according to the pH scale value of this solution should be more than 7.
Hence, option (A) is correct i.e. The solution would have a higher pH than its pOH.
To know more about pOH scale, visit the below link:
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What change releases energy.
Answer:
When a substance changes states, it requires energy when it goes to a higher energy state and releases energy when it goes to a lower energy state. Gas has a higher energy than liquid and liquid has a higher energy than solid. The three state changes from a lower energy to a higher energy are: solid to liquid: fusion. liquid to gas: vaporization
Please help with q2
A) Vinegar is an Acid solution while, Ammonia is a basic solution, so when they react they form a neutral solution,
Therefore this is a neutralization reaction
B) The lower the pH value of a solution, the more acidic it is, and vise versa for basic,
In the table Vinegar has the lowest pH value, of 3. Therefore Vinegar is the most acidic in the table
C) The higher the pH value of a solution, the more basic it is
In the table Ammonia has the highest pH value of 12. Therefore Ammonia is the most basic in the table
Happy to help :)
If you need any more help, you can ask me
What is one way that the kidneys help maintain homeostasis in the body?
A They regulate the temperature of the body
B They regulate the distribution of energy in the body
C They regulate the amount of oxygen in the body
D They regulate the amount of water in the body
Answer:
they regulate the amount of water in the body.
Explanation:
The kidneys help maintain homeostasis by regulating the concentration and volume of body fluids. For example, the amount of H+ and HCO3 - secreted by the kidneys controls the body's pH.
Find the final product for: Li + Br and show work.
Lithium is atomic number 3, so it has valency 1
While, Bromine is atomic number 35, and has valency 1
Lithium has an extra electron while Bromine need an electron, since they both need and have one electron, the form
LiBr (Lithium Bromide) where Li is +ve charged and Br is -ve charged
Happy to help :)
Your opinion on chocolate
What is your opinion on chocolate, any kind like white chocolate dark, etc. also what do you think is the bad side of chocolate?
Answer:
Milk Chocolate
Explanation:
Some chocolates contain lots of sugar, but for Dark chocolate its healthy
Answer:
Milk chocolate the bad side of chocolate is getting fat
Explanation:
have u ever tried shreks snickers before?
Which statement is correct?
A. Physical changes produce new substances; chemical changes do not.
B. Chemical changes produce new substances; physical changes do not.
C. Both physical changes and chemical changes produce new substances.
D. Neither physical changes nor chemical changes produce new substances.
Answer:
B. Chemical changes produce new substances; physical changes do not.
Explanation:
Physical changes only alter appearances, while chemical changes are interactions that create new chemical formulas.
The enzyme amylase will affect the breakdown of carbohydrates, but it will not affect the breakdown of proteins. The ability of an enzyme molecule to interact with specific molecules is most directly determined by the
Answer:
Shape of the enzyme and its active site
Explanation:
I need help ASAP please
Calculating pH
See chart below
Answer:
12, basic, 9, basic
Explanation:
pH = -log[H+]
Using the data in the table, you can calculate the pH:
-log[1e-12] = 12
-log[1e-9] = 9
To find out whether it is acidic, basic, or neutral, use a pH scale. Anything less than 7 is acidic, anything over is basic. Knowing this, both will be basic.
This is agree or disagree I need help ASAP!!
Write a balanced equation for the complete combustion of propane gas, C3H8, with
oxygen, O2, to form carbon dioxide, CO2, and water, H2O?
Answer:
Explanation:
Balancing Carbon atoms on the right side,
Balancing Hydrogen atoms on the right side,
Balancing Oxygen atoms on the left side,
The reactants are on the left side of the reaction:
Propane and oxygen are the reactants.
The products are on the right side of the reaction:
Carbon dioxide and water are the products.
forgive me if im incorrect or leaving things out
If you have 730 moles of a gas at 304 Kelvin in a 4.50 Liter container what
is the pressure of that eas in atmospheres?
Answer:
4046atm
Explanation:
For this question you can use the ideal gas law,
[tex]PV=nRT[/tex]
Where P is pressure, V is volume, n is moles of substance, R is the constant, and T is the temperature.
Because of the units given, R will equal .08026[tex]P=4046 atm[/tex]
Rearrange the equation to solve for pressure:[tex]P=\frac{nRT}{V}[/tex]
Then, plug in the values (I'll be excluding units for simplicity, but they all cancel out for pressure in atm):
[tex]P=\frac{(730)(.08206)(304)}{4.5}[/tex]
This will give you:
[tex]P=4046atm[/tex]
Which statement best describes the relationship between temperature and
solubility of carbon dioxide in the ocean? When Earth's ocean temperature is
higher *
a. less carbon dioxide can be dissolved in the ocean.
b. more carbon dioxide can be dissolved in the ocean.
c. there is no effect on the amount of carbon dioxide that can dissolve.
Answer:
less carbon dioxide can be dissolved in the ocean.
Explanation:
What does the nucleus of the cell control?
Answer:
Image result for What does the nucleus of the cell control?
The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus.
Explanation:
Answer:
Life functions
Explanation:
hope this helps <3
Which component of the universe contains all of the other components listed below and would have the
greatest mass?
The galaxy is the component of the universe which contains all of the other components and would have the greatest mass.
What is a galaxy?A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity.The word is derived from the Greek galaxias , literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. Galaxies, averaging an estimated 100 million stars, range in size from dwarfs with less than a hundred million stars, to the largest galaxies known – supergiants with one hundred trillion stars,each orbiting its galaxy's center of mass.
Most of the mass in a typical galaxy is in the form of dark matter, with only a few percent of that mass visible in the form of stars and nebulae. Supermassive black holes are a common feature at the centres of galaxies.
Learn more about galaxy,here:
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Does the variable increase(1) or decrease(1) under the described conditions?
1. What happens to pressure as volume
increases?
2. What happens to pressure as temperature decreases?
3. What happens to volume as temperature decreases?
4. What happens to volume as the number of moles increase?
Answer:
Explanation:
Decreasing the volume of a contained gas will increase its pressure, and increasing its volume will decrease its pressure. In fact, if the volume increases by a certain factor, the pressure decreases by the same factor, and vice versa. Volume-pressure data for an air sample at room temperature are graphed in Figure 5.
Because the volume has decreased, the particles will collide more frequently with the walls of the container. ... When the volume decreases, the pressure increases. This shows that the pressure of a gas is inversely proportional to its volume. This is shown by the following equation - which is often called Boyle's law.
The kinetic energy of the gas molecules increases, so collisions with the walls of the container are now more forceful than they were before. As a result, the pressure of the gas doubles. Decreasing the temperature would have the opposite effect, and the pressure of an enclosed gas would decrease.
For a fixed mass of gas at constant temperature, the volume is inversely proportional to the pressure. That means that, for example, if you double the pressure, you will halve the volume. If you increase the pressure 10 times, the volume will decrease 10 times.
Temperature, pressure, volume and the amount of a gas influence its pressure.
Gay Lussac's Law - states that the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature. If you heat a gas you give the molecules more energy so they move faster. This means more impacts on the walls of the container and an increase in the pressure.
i really hope some of this helped i would put more but its a lot too type
What does a wave carry
A.Energy B.Matter C.Molecule D.Particle
Answer:
Energy
Explanation:
As waves move from one place to another, they carry energy. Generally, the medium itself doesn't move much as it is the disturbance that is being transmitted
Answer:
energy because a wave isnt like a physical thing so it isnt gonna have matter or particles or molecules its just a movement of energy like a sound wave has no matter so it doesnt have particles and stuff
Explanation:
i know i sound very scientific XD
Are viruses alive. What makes something alive?
Statement: No cell membrane or other organelles.
Statement: Most viruses do not have the fools to copy their own DNA
Statement: Outside of a host cell viruses do not use energy.
Statement: viruses don't appear to have active processes that respond to the environment
what
Which of these do NOT show malleability a) Iron
b) Sulfur
c) Copper
d) Aluminum
Answer:Sulfur
Hope this helps!
Explanation:
When liquid H2O is chemically separated in a scientific investigation it forms H2 gas and O2 gas. If the number of hydrogen and oxygen molecules does not change through the equation, then the mass will
Select one:
decrease from reactants to products.
stay the same from reactants to products.
increase from products to reactants.
increase from reactants to products.
The large number before a molecule in a chemical formula is called a _______________.
O subscript
O coefficient
O equation
Answer:
Subscript
Explanation:
The little number you see to the right of the symbol for an element is called a subscript. That number indicates the number of atoms of that element present in the compound. When balancing an equation, you can change the coefficients but not the subscripts.
hope this helps! if not, it's got to be coefficient or equation
Mark brainly if answered correctly
ROW - ( 3 ) is correct
SYSTEM (A)
Respiratory system - here gaseous exchange takes place.
SYSTEM (B)
Digestive system - here nutrients from food is absorbed and assimilated .
SYSTEM (C)
Excretory system - removal of waste occurs
Density can be dasdied as a
A physical property of matter
B. chemical property of matter
C. physical change
D. chemical change
Answer:
A
Explanation:
physical property of matter
- no chemical reaction involved
- involves the measurements of mass and density
If greenhouse gases in the atmosphere act like a blanket around the Earth, how is this "blanket" being changed by human activities?
Answer:
c on edg
Explanation:
i dont know for sure so sorry if i am wrong.
and have a good day <3
4. The volume of a gas is 2.5 L when the pressure is at standard pressure (101.325 kPa). What is the
volume of the gas if the pressure decreases to 85 kPa and the temperature of the gas if the pressure is constant?
Answer:
18.32L
Explanation:
sana makatulong
Determine the representative particles of
0.075 mol Ti
2.10 mol CO2
Answer:
0.o75 mol Ti = 4.5x10∧22
2.10 mol CO2 = 1.26x10∧24 molecules
hope this helped
is Radon an elementary substance or a compound?
Answer:elementary substance
Explanation:
What is the charge of the atom in the diagram below?
A. -3
B. +1
C. 0
D.+3
Answer:
D. +3
Explanation:
have a wonderful day!!
Savvas Realize. Investigation 8 Experiment 1
Answer:
–1065.25 KJ of energy.
Explanation:
From the question given above, the following data were obtained:
4FeO + O₂ —> 2Fe₂O₃ ΔH = –560.66 kJ
From the balanced equation above,
The formation of 2 moles of Fe₂O₃ released –560.66 kJ of energy.
Finally, we shall determine the amount of heat energy released when 3.8 moles of Fe₂O₃ are produced. This can be obtained as follow:
From the balanced equation above,
The formation of 2 moles of Fe₂O₃ released –560.66 kJ of energy.
Therefore, the formation of 3.8 moles of Fe₂O₃ will release
= (3.8 × –560.66)/2 = –1065.25 KJ of energy.
Thus, –1065.25 KJ of energy is released from the reaction.
Which one of the following compounds is insoluble in water?
a) Na2CO3
b) K2SO4
c) Fe(NO3)3
d) ZnS
Answer:
The answer is Na2CO3.Option a