what is the ph of a 8.4x10^-6 M H+ solution?

Answers

Answer 1
pH=-log[H+]
pH=-log8.4x10^-6

Related Questions

How many grams of gas are present at 221 mL of Ar and 253 torr at -27 degree Celsius

Answers

Answer:

immma send you the link friend me on hereExplanation:

If a balloon expands to occupy a volume of 5.25 Liters going from 15 atm to 25 atm, what was the initial volume?
03.15L
O 7.75L

Answers

Answer:

V₁ = 8.75L

Explanation:

P₁ × V₁ = P₂ × V₂

15atm × V₁ = 25atm × 5.25L

V₁ = 8.75L

What type of reaction is illustrated?
C3H8 +502 + 3C02 + 4H2O
А
B
decomposition
combustion
single
replacement

Answers

Answer:

Combustion

Explanation:

Draw the major organic product(s) of the reaction of p-bromoaniline with HNO2, HCl.

Answers

Answer:

The major product from this reaction is 4-bromobenzene diazonium chloride.

Explanation:

The reaction of p-bromoaniline with HNO2 and HCl produces diazonium salt. When primary aromatic amines are nitrosated with nitrous acid in the presence of a strong acid such as HCl, diazonium salts are frequently formed. The diazonium salts are a crucial step in the production of halides and azo compounds. The necessary reaction mechanism is depicted in the illustration in the diagram below.

Hi, can someone plz help me with how to answer this: The conservation of energy?
Thank You :)

Answers

total energy of an isolated system remains constant throughout time; this is referred to as conservation of energy.

mplete the following Charles' Law calculations. If the current temperature is 25 degrees C and you have a 2L balloon, identify the new volume of the balloon if you increase the temperature to 30 degrees C. Remember to change Celsius to Kelvin: K= C + 273.​

Answers

Answer:

New volume = 2.03 L

Explanation:

Given that

Initial temperature, T₁ = 25°C = 298 K

Initial volume, V₁ = 2L

Final temperature, T₂ = 30°C = 303 K

We need to find the final volume. The mathematical form of Charle's law is given by :

[tex]\dfrac{V_1}{V_2}=\dfrac{T_1}{T_2}\\\\V_2=\dfrac{V_1T_2}{T_1}[/tex]

Put all the values,

[tex]V_2=\dfrac{2\times 303}{298}\\\\V_2=2.03\ L[/tex]

so, the new volume is equal to 2.03 L.

A solution is prepared by mixing 2.50g of CaCl2 with 50.0g H2O, what is the mass percent of CaCl2?
A. 3.76%
B. 4.76%
C. 5.76%
D. 6.76%

Answers

A. 3.76 is the answer

how long did it take for the moon to go around earth

Answers

Answer: about one month

Explanation:

Helpppooo give answer thanks

Answers

Answer:

625 mL

Explanation:

From the question given above, the following data were obtained:

Volume of stock solution (V₁) = 250 mL

Molarity of stock solution (M₁) = 5 M

Molarity of diluted solution (M₂) = 2 M

Volume of diluted solution (V₂) =?

The volume of the diluted solution can be obtained by using the dilution formula as illustrated below:

M₁V₁ = M₂V₂

5 × 250 = 2 × V₂

1250 = 2 × V₂

Divide both side by 2

V₂ = 1250 / 2

V₂ = 625 mL

Therefore, the volume of the diluted solution is 625 mL.

A substance has a pH of 4. Is it an acid or a base?

Answers

acid; a ph less than 7 is acidic and more than 7 is a base
Acid if it’s more that 7 then it is a base.

Determine la temperatura Kelvin de 2.49 moles de gas contenido en un
recipiente de 1.0 L a una presión de 143 kPa. *

Answers

La temperatura del gas contenido en el recipiente es de -259,35 ° C
Explicación:
Para encontrar la unidad de grados en Celsius (° C) en este caso, se usa la ecuación de la ley de los gases ideales.
PV = nRT
Donde P es la presión, V es el volumen, T es la temperatura, n es el número de moles y R es la constante universal de los gases.
P = 143 kPa = 1,4113 atmósferas
V = 2,00 L
n = 2,49 mol
R = 0.08205746 atm * L / mol * K
Resolver para T sería: PV / nR
T = (1.4113 atm * 2.00 L) / (2.49 mol * 0.08205746 atm * L / mol * K)
T = 2,8226 / 0,2043
T = 13,8 K = -259,35 ° C

PLZ HELP ON TIMER WILL GIVE BRAINLIEST
How does technology limit the future of space exploration?

There are too many devices in space interfering with taking correct measurements.

Scientists cannot make contact with older satellites in outer space.

Scientists are able to work both with current and future technology.

Scientists must first develop certain technologies before missions can be completed.

Answers

Answer:

I would put the final answer choice: "Scientists must first develop certain technologies before missions can be completed"

Explanation:

The first option is partially true, but we have ways around it.

The second option is straight-up false.

The third option doesn't make much sense, how can one work with technology that will be developed in the future and doesn't yet exist?

Therefore, the fourth option is the best.

Hope this helps

-cyber

Bananas Foster is an example of a dessert that is flambéed. A Bananas Foster label states the accepted number of Calories to be only 300 calories, but a calorimetry experiment measured there to be 318 calories. Calculate the percent error.

Answers

Answer:

6.00%

Explanation:

Step 1: Given data

Accepted value for the number of calories in a Bananas Foster: 300 calories

Measured value for the number of calories in a Bananas Foster: 318 calories

Step 2: Calculate the percent error in the measure

We will use the following expression.

%error = |accepted value - experimental value|/ accepted value × 100%

%error = |300 cal - 318 cal|/ 300 cal × 100% = 6.00%

HELP!!!!!! PLEASE!!!

Answers

Answer:

C

Explanation:

sorry if im wrong!!

14. Simply, explain the role of both the nucleus and the ribosome in protein synthesis.

Answers

Answer:

Eukaryotic cells have a true nucleus, which means the cell's DNA is surrounded by a membrane. Therefore, the nucleus houses the cell's DNA and directs the synthesis of proteins and ribosomes, the cellular organelles responsible for protein synthesis.

Ribosomes are the sites in a cell in which protein synthesis takes place. ... Within the ribosome, the rRNA molecules direct the catalytic steps of protein synthesis — the stitching together of amino acids to make a protein molecule.

Calculate the freezing point of a solution made by dissolving 13 g potassium sulfide in 150 g H2O Kf for water = 1.86 C/m

Answers

Answer:

[tex]T_F=-4.4\°C[/tex]

Explanation:

Hello there!

In this case, according to the given information, it is possible for us to calculate the freezing point of an aqueous solution of potassium sulfide by using the following equation:

[tex]T_F=T_{solv}-i*m*Kf[/tex]

In such a way, we firstly calculate the molality of this solution according to:

[tex]m=\frac{\frac{13g}{110.262 g/mol} }{0.150kg} =0.79m[/tex]

Finally, since the Van't Hoff's factor for K2S is 3, the freezing point of the solution turns out to be:

[tex]T_F=0\°C-3*0.79m*1.86\°C/m\\\\T_F=-4.4\°C[/tex]

Regards!

2L of hydrogen has an initial pressure of 750 mmHg, what is the final pressure in mmHg if the volume increases to 20 L with a constant temperature of 37 degrees C?​

Answers

Answer: The final pressure is 75 mm Hg.

Explanation:

According to Boyle's law, at constant temperature the pressure of a gas in inversely proportional to volume.

Since, it is given that the temperature is constant. Hence, formula used is as follows.

[tex]P_{1}V_{1} = P_{2}V_{2}[/tex]

Substitute the values into above formula as follows.

[tex]P_{1}V_{1} = P_{2}V_{2}\\750 mm Hg \times 2 L = P_{2} \times 20 L\\P_{2} = \frac{750 mm Hg \times 2 L}{20 L}\\= 75 mm Hg[/tex]

Thus, we can conclude that the final pressure is 75 mm Hg.

What are some of the common characteristics for the elements in a group? Use examples to support your explanation.

Answers

Answer:

The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements

Explanation:

Elements are the simplest complete chemical substances. Each element corresponds to a single entry on the periodic table. An element is a material that consists of a single type of atom. Each atom type contains the same number of protons.

Can someone please help me with this question

Answers

Explanation:

a) 3Pb(NO3)2 + Al2(SO4)3 ---> 3PbSO4 + 2Al(NO3)3

Double displacement

b) 2Cl2 + 3O2 ---> 2Cl2O3

Synthesis

c) 2Fe2O3 + 3C ---> 4Fe + 3CO2

single displacement

HELP ME PLEASE I AM STRUGGLING

Answers

maybe umm think so pick think so

When a liquid is cooled kinetic energy of the particles remain the same, increase or decrease

Answers

Answer:

Decreases.............

Answer:

kinetic energy of the particles decreases

Explanation:

just remember, cold = decrease and hot = increase

Which of the following statements explains how concentration of a solution affects the rate of a reaction? (5 points)
O a
When concentration decreases, kinetic energy increases.
Ob
When concentration increases, particles collide less often.
When concentration increases, particles collide more often.
Oc
Od
When concentration decreases, collision of particles increases.

Answers

Answer:

when concentration increases, particles colide more often

The statement "When concentration increases, particles collide more often" is correct.

What is concentration?

A constituent's abundance divided by the entire volume of a combination is known as concentration. Mass concentration, molar concentration, number concentration, and volume concentration are all examples of mathematical descriptions.

There are much more reactant particles travelling together as the concentration of reacting species increases. Because there would be more collisions, the reaction rate will be faster. The rate of a reaction increases as the concentration of reactants increases.

To know more about concentration click here.

https://brainly.com/question/10725862.

#SPJ2

what is the most well known supercontinent?

Answers

Answer:

Pangaea

FILLER FILLER FILLER

Measure the volume of the gas in the syringe.
Estimate it to the nearest 0.5 mL. mL

30.5
Intro
32.5
37.5
40.0

Answers

Answer: 47.5

Explanation:

Answer: 47.5 is your answer

Explanation:

good luck on the rest XoXo

how many moles of CO2 are in 35.0 liters of CO2 at STP?

Answers

Answer:

75300g ..........................

Sea turtles use the earths geomagnetic filed to navigate their way home. What is the reason earth has a geomagnetic filed?

Answers

Answer:

Due to the iron inside the earth.

Explanation:

Imagine a sphere of Iron, as big as two-third the size of the moon and as hot as 5700 Kelvin. That is the Earth’s core.

The iron core isn't in its liquid form even at that temperature because it is crushed under immense gravity. This core is surrounded by 2000 km of other metals like iron and nickel which are in their molten state.

The temperature is not the same at every point in this molten layer. The hotter and less dense matter rises up, and the warm denser matter sinks. This causes convectional currents in the interior of the Earth.

Because of the Earth’s spin, there is a force that is established called the Coriolis force which causes swirling whirlpools here too.

This flow of molten metals produces electric currents which generate self-sustaining magnetic fields. And as a result of the Coriolis force, all these combined effects add up to produce one big magnetic field engulfing the Earth aligned in one direction.

How many valance electrons does He need to get to 8

Answers

Answer:

Any element in group 18 has eight valence electrons (except for helium, which has a total of just two electrons

Which statement best describes thermodynamics?
A. The study of how energy changes and moves
B. The study of physical laws acting on matter
C. The study of electricity at low temperatures
D. The study of intermolecular forces in liquids

Answers

That person was right it is A

Answer:

a

Explanation:

Which represents the greatest number of phosphorous
atoms?

Answers

Answer:

Helium has the most number of mol out of all the options and will thus have the highest number of atoms.

Explanation:

The main biochemical components of living things are ___

Answers

Answer:

Amines ketones aldehydes and aromatic

Explanation:

my opinion but thats my answer

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