5. A solution has a pH of 9. The solution is best described as:

Answers

Answer 1

Answer: Basic

Explanation:

A solution with a pH of more than 7 is considered basic.


Related Questions

(0904) How many atoms are there in 56.2 grams of Krypton, Kr?

Answers

Answer:

56.2÷6.02×10^23

=9.34×10^23

Explanation:

Divide the given mass of the atom by the mass of an Atom (the avogadro's constant) to find the number of atoms in the given mass.

HELP ASAP 30 POINTS
IS THIS CORRECT?

Answers

answer: yes I believe so

explain: I just think it is I have done this before

yes, it is correct . hope i helped

Things people think bad about them self
1. I'm to fat/skinny
2.I'm to ugly
3.I don't love myslef
4.why doesn't anyone like me
5. Im gonna hurt myslef


stay strong

Answers

1 2 3 4 5 and how the question ask

Select the correct answer.
What data points do we combine to make the integrated rate law?

a) initial concentration and time

B) concentration at some later time, time, and rate constant

C) initial concentration, concentration at some later time, and time

D) initial concentration, concentration at some later time, time, and rate constant

Answers

Answer:

b???

Explanation:

Answer:

Pretty sure it A.

Explanation:

I just thought that cause what exactly does 'some later time' mean?

The colision of two plates causes the fomation of _____
mountain

Answers

The collision of two plates causes the formation of fold mountains.

Why do girls like boys who act rude more than boys that are actually nice!

Answers

Answer:

When a guy who shows a girl to much emotion, they get turned off.

Explanation:

A piece of metal of mass 23 g at 100 ◦C is
placed in a calorimeter containing 55.4 g of
water at 25◦C. The final temperature of the
mixture is 63.4
◦C. What is the specific heat
capacity of the metal? Assume that there is
no energy lost to the surroundings.
Answer in units of J
g ·
◦ C
.

Answers

Answer:

10.58 J/g-°C

Explanation:

To find the specific heat capacity of the metal, you need to know how much heat was lost when it reacted with water.

You know that there are 55.4 g of water, the initial temp. of water is 25°C, and the final temp. (the mixture's temp.) is 63.4°C.

You should also know that the specific heat capacity of water is 4.186 J/g-°C.

Plug this into the equation the q=mcΔT.

q = (55.4 g)(4.186 J/g-°C)(63.4°C - 25°C)

q = 8905.12896 J

If 8905.12896 J was gained by the water, then 8905.12896 J must have been lost from the metal.

You know that there are 23 g of the metal and that its initial temp. is 100°C.

Plug this information into q=mcΔT.

8905.12896 J = (23 g)(C)(63.4°C - 100°C)

C = 10.58 J/g-°C

*When you plug all of this into the calculator, it will result in a negative number but keep in mind that heat was LOST by the metal so 8905.12896 J  is essentially negative. So the negative cancels out.*

what is the difference between an enzyme and an inhibitor?​

Answers

Enzyme- a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction
Inhibitor- a thing which inhibits someone or something

which of the following elements has the lowest first ionization eneygy A, potassium B, sodium C, calcium D, Argon​

Answers

Answer:

Argon

Explanation:

Because, it is positioned down on the periodic table

Answer:

Argon

Explanation:

Name the compound and determine the number of moles present. SHOW YOUR WORK.


60.0g Na2SO4

Answers

Answer:

60.0g Na2SO4

Na2SO4 molar mass 142.04g

divide 60.0 by 142.02

And you get the answer .422moles Na2SO4

let me know if you need more explanation

The heat capacity of aluminum is 0.900 J/gºC. a. How much energy is needed to raise the temperature of an 8.50 x 102g block of aluminum from 22.8°C to 94.6°C? ​

Answers

Recall the heat capacity equation:

q = mc∆T

We're given mass, specific heat capacity, as well as the change in temperature. All we need to do is plug the numbers into the variables and we'll have our answer!

Although this question doesn't try to trick you, more often than not questions regarding energy change will attempt to throw you off with specific heat capacity. It's extremely important to note the units of the specific heat capacity and ensure that the numbers you use are in those units. As an example, the specific heat capacity might be given to you in J/mol*K - in this case, you'd have to do some unit conversions with your given data in order to fit all the numbers. In this question, we're given the specific heat capacity in J/gºC, so we don't need to change anything since all of our data is already in these units.

Anyways, back to the actual question:

q = mc∆T

q = (8.50 * [tex]10^{2}[/tex]) * (0.900) * (94.6 - 22.8)

q = 54927 (J)

Remeber to include significant figures:

54927 = 5.49 * 10^4 (J)

The required energy is 5.49 * [tex]10^{4}[/tex] Joules, or 5.49 * [tex]10^{1}[/tex] kJ

Let me know if you need any of my work to be explained!

- Breezeツ

A chalice contains a 2.01M solution of ammonium chlorite in 2.36 liters of solvent - calculate the number of moles.

Answers

Answer:

4.74 mol

Explanation:

Molarity = [tex]\frac{mol}{L}[/tex]

2.01 M = [tex]\frac{mol}{2.36 L}[/tex]

(2.01 M)(2.36 L) = 4.74 mol

URGENT LOOK AT PICTURE
look at the thing and choose all that matches ​

Answers

Answer:

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

BRAINLIEST PLEASE

calculate the molecular mass of N2O3​

Answers

the answer is 76.01g/mol

and the density:1.4g/cm³

2. How many moles of salt are present in 1.5L of a 5.OM salt water solution?

Answers

Answer:

There are 7.5 moles of salt

Explanation:

5.0M means that in every liter of solution, there are 5 moles of salt. So, 1.5L of solution times 5 moles per liter equals 7.5 moles

What is a buffer used for?

A. To limit the pH change in a solution
B. To prevent an acid from dissociating
C. To neutralize the pH of a solution
D. To prevent a salt from dissolving

Answers

A, a buffer is used to limit or to stop any change to the pH in a solution.

A buffer is primarily used to limit the pH change in a solution. Option A is correct.

A buffer is the solution which contains the weak acid and its conjugate base or weak base and its conjugate acid. It is designed to resist changes in pH when small amounts of acid or base are added to it.

When an acid or base is added to a buffer solution, the buffer components react with the added ions to minimize the impact on the solution's pH. If an acid is added, the buffer will react with the acid by accepting the H⁺ ions. If a base is added, the buffer will react with the base by donating H⁺ ions. In both cases, the buffer helps maintain the pH at a relatively stable level.

To prevent an acid from dissociating, is not accurate. A buffer does not prevent an acid from dissociating. In fact, the acid in a buffer solution is necessary to provide the conjugate base and maintain the buffer's pH buffering capacity.

To neutralize the pH of a solution, is also not accurate. A buffer does not neutralize the pH of a solution to a particular value. Instead, it resists significant changes in pH when small amounts of acid or base are added.

To prevent a salt from dissolving, is unrelated to the purpose of a buffer. A buffer is not used to prevent the dissolution of salts.

Hence, A. is the correct option.

To know more about buffer here

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HELP ME WOTH QUESTION BELOW PLEASE​

Answers

tip

this is just a tip not the true answer but try to add the given number

Sometimes the number of electrons in an atom changes. These atoms are called what

Answers

Answer:

ions

Explanation:

When you add an inert gas, the reaction

Answers

Answer: When an inert gas is added to the system in equilibrium at constant pressure, then the total volume will increase.

Explanation:

How is enthalpy related to the spontaneity of a reaction?
A. AH=0 contributes to spontaneity.
B. AH<0 contributes to spontaneity.
C. AH> 0 contributes to spontaneity.
D. AH does not affect spontaneity.

Answers

Answer:

D

Explanation:

Gibb's free energy change(∆G) and Standard electrode potential of electrochemical (Ecell) determine the spontaneity of a reaction.

when ∆G > 0, the reaction is not spontaneous

∆G < 0, the reaction is spontaneous

∆G = 0, the reaction is in equilibrium

when Ecell > 0, the redox reaction is spontaneous

Ecell < 0, the redox reaction is not spontaneous

Ecell = 0, the redox reaction is in equilibrium.

ΔH < 0 contributes to spontaneity.

What is a spontaneous reaction?A spontaneous reaction is one that takes place naturally under a certain set of circumstances. The general entropy, or chaos, of the system increases in the presence of spontaneous reactions.

How can we determine if a reaction is spontaneous or not?

We can determine it by calculating Gibb's free energy.

How do we calculate Gibb's free energy?

It is calculated by the formula:

ΔG = ΔH - TΔS

ΔG is the change in Gibb's free energy,ΔH is the change in the enthalpyΔS is the change in entropy.

How does ΔG tells if a reaction is spontaneous or not?If ∆G > 0, the reaction is not a spontaneous reaction∆G < 0, the reaction is a spontaneous reaction∆G = 0, the reaction is in equilibrium

How does ΔH contribute to the spontaneity of the reaction?For a reaction to be a spontaneous reaction, ∆G < 0.Consider a reaction, ΔG will be calculated as ΔH - TΔSIf ∆H < 0 then the ΔH - TΔS will be a lesser value ( more negative) than it would have been when ∆H = 0 or ∆H > 0.Therefore  ∆H < 0 contributes to spontaneity.

To learn more about ΔH, spontaneous reaction, enthalpy, and entropy here,

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Matthew was cleaning his car on a very hot summer day. He left the cleaning spray he had bought, and was using, on the driveway in the intense heat and the can exploded. Why did this happen?

Answers

Answer: The cleaning spray might have containing alcohol.

Explanation:

Some alcohol have the tendency to give an explosive effect on heating. According to the given situation, if the cleaning fluid is containing alcohol and when it had been exposed to air, oxygen and sun heat it will become unstable by producing peroxides which can explode the can in which they have been stored. So, in the given situation, the cleaning spray containing alcohol will explode due to intense heat.

Mass = 22g Volume = 2cm3 What is the Density?​

Answers

Answer:

11g/cm^3

Explanation:

The density of a substance can be found By

density= Mass/volume

From the question

mass = 22 g

volume = 2 cm³

22/2=11

We have the final answer as

11 g/cm³

Answer:

11g/cm^3

Explanation:

It is because the constant formula density is

Density=Mass/ Volume.

Therefore we have

Density=22g/2cm^3

Which is = 11g/cm^3

Define respiration in plants:


Define Transpiration in plants:

( Can’t be short has to at least be long or medium sized )

Answers

Answer:

Respiration in plants: The process of respiration in plants involves using the sugars produced during photosynthesis plus oxygen to produce energy for plant growth. In many ways, respiration is the opposite of photosynthesis. ... As with photosynthesis, plants get oxygen from the air through the stomata.

Transpiration in plants: The water eventually is released to the atmosphere as vapour via the plant's stomata — tiny, closeable, pore-like structures on the surfaces of leaves. Overall, this uptake of water at the roots, transport of water through plant tissues, and release of vapour by leaves is known as transpiration.

Sources (jic)

https://www.usgs.gov/special-topic/water-science-school/science/evapotranspiration-and-water-cycle

https://www.pthorticulture.com/en/training-center/basics-of-plant-respiration/

Good luck!!

1. Respiration in plants involves using the sugars produced during photosynthesis plus oxygen to produce energy for plant growth.

2.Transpiration is the process of water movement through a plant and its evaporation from aerial parts.

When CuCl2 reacts with NaNO3, copper (II) nitrate and sodium chloride are formed.
a) Write the balanced equation for the reaction given above:
CuCl2 + NaNO3 à Cu(NO3)2 + NaCl

Answers

Answer:

CuCl2 + 2NaNO3 -------> Cu(NO3)2 + 2NaCl

hope this helps

good day mate

Waves made by the breeze were very different than wave created by speedboat. describe the difference

Answers

Answer:

The amplitude of the speedboat waves were larger then the Breeze waves. The frequency of the speedboats waves were lower than the breeze waves. the speedboat waves had more of an effect on the boat, which tells us the speedboat waves had more energy.

Explanation:

plz can i get brainliest:)

Answer:

speedboat waves artificail and waves by breezes natural

Explanation:

TRUE OR FALSE?

It is not possible for wind can push an air parcel even higher in the troposphere, causing the parcel to cool and lose more energy, which will lead to more rainfall.

Answers

Answer:

The more water vapor in the air parcel, the more condensation can occur, and therefore, more rain. ... The air parcel then loses more energy, causing more rainfall. Wind pushes air parcels even higher in the troposphere, where it is colder. The air parcels will then lose more energy and more rain can happen.

I think is FALSE, is that right?

(PLS HELP ASAP <3)
a sample of oxygen gas occupies 600mL when the pressure is 900 mmHg, what is the pressure if the volume is increased to 800 mL​

Answers

Answer:

675 mmHg

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

[tex]P_1V_1 = P_2V_2[/tex]

Since we're finding the new pressure

[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]

We have

[tex]P_2 = \frac{900 \times 600}{800} = \frac{540000}{800} \\ = 675[/tex]

We have the final answer as

675 mmHg

Hope this helps you

How does the way in which the solar system formed explain the orbits, sizes, and compositions of the planets?

Answers

Answer:

DUE TO GRAVITATIONAL COLLAPSE SOLAR SYSTEM IS FORMED , ORBITS ARE CURVED TRAJECTORIES AND SIZE AND COMPOSTION OF PLANET ARE VERY UNIQUE AND COMPOSED OF ROCKS AND METALS and evolution of solar system has began 4.5 billion years ago,due to gravitational collapse of a small particle from a giant cloud.

Which claim about the universality of gravity is not supported by evidence?

Answers

Answer:

b because  i said so

Explanation:

What would be the effect on this reaction of increasing the temperature?
2H2 + O2 = 2H20 + energy
A) the rate of formation of H2O would increase
B) The forward reaction would be favored
C) Increasing the temperature would not have an effect on this reaction
D) The rate of the forward reaction would decrease

Answers

Answer:

D) The rate of the forward reaction would decrease

Explanation:

The statement that describes effect on the reaction of increasing the temperature is "the rate of the forward reaction would decrease."

What is temperature?

Temperature is the measurement of a body's level of hotness or coolness.

The average kinetic energy of the system is measured by temperature. The kinetic energy of particles in a matter raises as they move faster, which boosts the temperature of the system. When two bodies of differing temperatures come into touch, heat is the energy exchanged between them.

The term "exothermic reaction" refers to a reaction that releases energy. An exothermic reaction, in other words, produces heat. The temperature of the reaction will rise unless it is cooled in some way. When you use an external heater to raise the temperature, it slows or reverses the reaction, reducing the number of products while increasing the amount of reactants.

Hence the correct answer is D.

Learn more about temperature here,

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