what is the pH of a solution that has a [H+]=1.75x10^-11

Answers

Answer 1

[tex]pH = - \log[\text{H}^{+}] = -\log \left(1.75 \times 10^{-11} \right) = 10.757[/tex]


Related Questions

100.0 grams of water at 4.0°C is heated until its temperature is 37°C. If the specific heat of water is 4.18 J/g°C, calculate the amount of heat energy needed to cause this rise in temperature.

Answers

The amount of heat energy needed to cause the rise in temperature of the water initially at 4 degreess Celsius is 13,794 J.

Heat required to raise the temperature of the water

The quantity of heat required to raise the temperature of the water is calculated as follows;

Q = mcΔθ

where;

m is mass of the waterc is heat capacityΔθ is change in temperature

Q = 100 x 4.18 x (37 - 4)

Q = 13,794 J

Thus, the amount of heat energy needed to cause the rise in temperature of the water initially at 4 degreess Celsius is 13,794 J.

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Three quantum numbers are derived from Schrodinger’s equation that describe the probability of finding an electron around a nucleus: the principal quantum number, the angular momentum quantum number, and the magnetic quantum number. Explain each quantum number, including associated shapes, numbers, letters, and values in your own words.

Answers

Principle: Orbital size & main energy level

Angular: Orbital shape

Magnetic: Orbital orientation

Orbital size is Principle; main energy level is Principle; shape is Angular; orientation is Magnetic

Principle:

imagine a bullseye. each ring shows how far its from the nucleus

Angular:

0 looks like circle

1 looks like a bowtie

2 looks like a flower or 4 leaf clover

3 looks like multiple lobes

Principle Quantum Number: It describes the size of the orbital and the main energy level. It is represented by n. Where, n = 1,2,3,4....stands for K, L, M, N shell and so on..

Angular momentum Quantum Number : It describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

Magnetic Quantum Number : It describes the orientation of the orbitals. It is represented as . The value of this quantum number ranges from . When l = 2, the value of  will be -2, -1, 0, +1, +2.

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8. Subshells half-filled with electrons are particularly stable. Can you suggest a possible physical basis for this claim?​

Answers

The stability of atoms whose subshells are half-filled with electrons is due to equilibrium and symmetry.

How does subshells half-filled with electrons confer stability?

The stability of an atom of an element depends on the number of electrons in its valence shell.

Atoms whose valence shells are completely filled are particularly stable atoms.

Similarly, subshells half-filled with electrons are particularly stable.

The stability of subshells half-filled with electrons can be explained based on equilibrium and symmetry.

A half-filled subshell distributes the energy of the electrons evenly and symmetrically such that the atom attians stability.

Therefore, stability of subshells half-filled with electrons is due to equilibrium and symmetry.

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3.Using Balanced Equations: C5H12+802–5CO2+6H20

A. If you have 358.4 Liters of O2 gas then what's the volume of CO2

b. If you have 360 grams of C5H12 then what's the mass of H2O

Answers

Answer:

i think b is the answer hope this helps:))

what does rows represent on the periodic table

Answers

Answer:

Rows on the periodic table represents a period, which is the number of energy levels or rings. It is the last shell which valence electrons are on.

For example the first row waas Hydrogen and Helium which each have one  energy level.

The esecond row has Carbon and Oxygen which has two energy level.

The third row has Sodium which has three energy levels and so on.

what best describes the bonding in the compound ICl?

Answers

The compound ICI (Iodine Mono-chloride) contains ionic bonds. *The ICI compound is polar covalent*

15.0 g of water at 0.0 °C are added to 40.0 g of water at 40.0 °C. What is the final
temperature of the mixture?

Answers

Answer:

40.0 c

Explanation:

Answer:

29.09 degree Celsius is final temperature

An unidentified covalent molecular compound contains only carbon, hydrogen, and oxygen. When 7.40 mg of this compound is burned, 17.80 mg of CO2 and 2.08 mg of H2O are produced.
The freezing point of camphor is lowered by 26.4°C when 3.044 g of the compound is dissolved in 18.00 g of camphor (Kf = 40.0°C kg/mol).

What is the molecular formula of the unidentified compound?

Choose appropriate coefficients in the molecular formula below.
C H O

Answers

The molecular formular shows all the atoms in the compound. The molecular formula of the compound is C15H10O5.

What is molecular formula?

The molecular formula is the formula of the compound that shows the total number of atoms in a compound.

We know that;

ΔT = K m i

ΔT = 26.4°C

K = 40.0°C kg/mol

m = ?

i = 1

26.4°C = 40.0°C kg/mol * m * 1

m = 26.4°C/40.0°C kg/mol  = 0.66 m

We know that

m = mass/molar mass ÷ mass of solvent(in Kg)

Let the molar mass be MM

m = 3.044 g/MM ÷ (18 * 10^-3 Kg)

0.66 m =  3.044 g/0.018MM

0.66 m  * 0.018MM =  3.044 g

MM = 3.044 g/0.66 m  * 0.018

MM = 256 g/mol

Now;

Mass of C =  17.80 * 10^-3/44 * 12 = 0.00485 g

Moles of C = 0.00485 g/12 g/mol = 0.0004 moles

Mass of H = 2.08 * 10^-3/18  * 2 = 0.0002 g

Moles of H =  0.0002 g/1 g/mol = 0.0002 moles

Mass of O = [7.40 * 10^-3 - (0.00485 + 0.0002)] = 0.00235 g

Moles of O = 0.00235 g/16 g/mol = 0.000147 moles

Divide through by the lowest number of moles;

C - 0.0004/0.000147  H - 0.0002/0.000147  O - 0.000147 /0.000147

C - 3   H  -  2  O -  1

The empirical formula is C3H2O

So;

[3(12) + 2(1) + 1(16)]n = 256

[36 + 2 + 16]n = 256

n = 5

Molecular formula = C15H10O5

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What is the difference between typhoons and hurricanes?
A. Wind speed
B. Strength of the wind
C. Amount of rainfall
D. Place of origin

Answers

What is the difference between typhoons and hurricanes?

A. Wind speed

B. Strength of the wind

C. Amount of rainfall

D. Place of origin

typhoons and hurricanes are both tropical cyclones its only one difference is the place of origin

option D place of origin

When calcium carbonate is heated strongly, carbon dioxide is evolved.

CaCO3 > CaO + CO2

If 4.74g of calcium carbonate is heated, what volume of CO2 would be produced when collected at STP?

Show all steps (Answer: 1.06L)

Answers

If 4.74 g of calcium carbonate is heated, the volume of [tex]CO_2[/tex] that would be produced at STP will be 1.08 L

Volume of gas at STP

From the equation of the reaction:

[tex]CaCO_3 --- > CaO + CO_2[/tex]

The mole ratio of [tex]CaCO_3[/tex] and [tex]CO_2[/tex] is 1:1

Mole of 4.74 g  [tex]CaCO_3[/tex] = 4.74/100 = 0.0474 moles

Equivalent mole of [tex]CO_2[/tex] = 0.0474 moles

1 mole of gas at STP = 22.71 L

0.0474 moles  at STP = 22.71 x 0.0474 = 1.08 L

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The two main types of weathering are

a
mechanical and physical

b
physical and kinetic

c
chemical and physical

d
chemical and acidic

Answers

Answer:

c. chemical and physical

C. Chemical and physical
I hope that’s right :)

If 32.00 mL of a solution of Ca(OH)2 requires 16.08 mL of a 2.303 M solution of HNO2 for complete titration, what is the molarity of the Ca(OH)2 solution?

Answers

For the equilibrium that exists in an aqueous solution of nitrous acid ... calcium hydroxide is dissolved in water until the pH of the solution is 11.44.

How many grams of aluminum will be deposited by 0.1F? (Al=27) a.0.3g b. 0.9. c. 9.0g. d. 2.7g

Answers

Based on the charge on the aluminium ion, 0.9 g of aluminium are deposited by 0.1 F of electricity.

What is electrolysis?

Electrolysis is the decomposition of a substance known as an electrolyte when electric current is passed through it.

The mass and hence moles an electrolyte deposited when current is passed through it depends on the charge on the ion.

Aluminium ion has a charge of +3 and requires 3F of electricity to deposit 1 mole or 27 g of aluminium

0.1 F will discharge = 0.1/3 × 27 g of aluminium

mass of aluminium deposited = 0.9 g of aluminium.

Therefore, 0.9 g of aluminium are deposited by 0.1 F of electricity.

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Most of the food that organisms eat can be traced back to? .

A. plants
B. soil
C. animals
D. bacteria

Answers

Answer:

A. Plants

Explanation:

Plants are producers, which make their own food. Other organisms, such as rodents, birds, and wild cats, are consumers, which receive their energy from plants or other consumers.

What is the phase label on H3O+?

Answers

Answer:

I think it’s  aq but your choice.

Explanation:

Why are polar and non polar liquids immiscible?

Answers

Answer:

When both liquid molecules are polar then they can attract one another - which leads to mixing (miscibility).

When the molecular liquid is nonpolar, then the water molecules attract only one another while ignoring the nonpolar liquid. the result is that the two liquids are immiscible.

Explanation:

I hope it helps mark me brainliest^^

Answer:

They lack lack inter-molecular forces to disolve in the polar liquids.

Explanation:

Miscibility is the property of two substances to mix in all proportions (that is, to fully dissolve in each other at any concentration). Polar molecules like water will mix well with some other polar molecules but things like oil which are non polar do not mix well with polar molecules. This is because the oil and water lack inter-molecular forces to keep them mixed.

Best way to deal with calculations in chemistry? ​

Answers

Answer: Look up a video, and they will tell/show you.

alloy is combined by physically or chemically

Answers

Answer:

alloy is the homogeneous mixture of metal and metal or metal and non metal

Answer:

Yes, an alloy is  combined physically or chemically into a separate compound. And a mixture of

Explanation:

Alloys have physical properties between those constituent metals and chemical properties remain unaffected. But alloys can be separated physically.

Which statement best predicts and explains the product of a single displacement reaction when the cation (A) with an oxidation number of +2 and an anion (B) with the oxidation number of -3 react and form a compound?


A+2B-3 is the predicted formula when each metal cation has a charge of +2 and each non metal has a charge of -3.


B2A3 is the final formula for the metal anion bonding to the non-metal cation in a 2:3 ratio.


A3B2 is the predicted formula with an overall charge of the compound being zero and each atom has 8 valence electrons in their outermost electron shell.


A3B2 is the predicted formula is made when each metal cation gains three electrons from the anion while each nonmetal loses 2 electrons to each of the cations.

Answers

The statement that best predicts and explains the product of a single displacement reaction is ;   ( C ) A3B2 is the predicted formula with an overall charge of the compound being zero and each atom has 8 valence electrons in their outermost electron shell.

Octet state

Given that the oxidation number is +2 shows that it will be an octet when it donates its 2 electrons. also for octet B it will become complete when it accepts 3 electrons. Therefore in order to balance out the octet of each atom is by cross multiplying to get A3B2.

Hence we can conclude that The statement that best predicts and explains the product of a single displacement reaction is ;  A3B2 is the predicted formula with an overall charge of the compound being zero and each atom has 8 valence electrons in their outermost electron shell.

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A gas occupies a volume of 50.0 mL at 27°C. At what temperature, in °C, would the pressure be
101.3 kPa if the volume remains constant?

Answers

Answer:

i believe 223

Explanation:

T2 + 500k = 223 C*

Problem To Solve:
Scenario: you have a very bad head-ache so you run to the pharmacy to grab some medicine and are immediately over-whelmed with your options. You decide to buy the cheapest option to cure your headache.
Availability:
Excedrin is available as a 200 caplet bottle for $15.51 and each caplet contains 250- mg of acetaminophen (the active ingredient in Excedrin).
Advil is available as a 300 tablet bottle for $15.00 and each tablet contains 200-mg of Ibuprofen (the active ingredient in Advil).
Tylenol is available as a 225 pill bottle for $14.97 and each pill contains 500mg of a paracetamol (the active ingredient in Tylenol).
Dosage Information:
Acetaminophen is dosed as 240 mg per 35 pounds of body mass.
Ibuprofen is dosed at 113 mg per 25 pounds of body mass.
Paracetamol is dosed at 102mg per 15 pounds of body mass.
Active ingredient information:
Acetaminophen has the chemical formula: C8H9NO2
Ibuprofen has the chemical formula C13H18)2.
Paracetamol has the chemical formula C8H9NO2.
How:
Calculate the cost of treating your own headache for each medicine based on your own body weight = 130 pounds.
Clearly write out and organize all the conversion factors, then write out the conversion for each medicine. Once you have concluded the cheapest option for curing your headache, calculate the cost per individual molecule of your pain reliever.
Please help me solve this and write all the conversion factors, and write out the conversion for each medicine. Thank you!

Answers

Based on the drug dosage provided, cheapest drug for treating headache is Tylenol at a cost of 3.34×10^-23 $/molecule.

What is a drug dosage?

A drug dosage is the amount of a drug taken by an individual that produces a therapeutic effect.

The dosage of each drug is given below:

Acetaminophen is dosed as 240 mg per 35 pounds of body mass.Ibuprofen is dosed at 113 mg per 25 pounds of body mass.Paracetamol is dosed at 102mg per 15 pounds of body mass.

Amount of each drug required by individual is as follows:

Acetaminophen = 240 mg/35 × 130 = 891.43 mg

Ibuprofen = 113 mg/25 × 130= 587.6 mg

Paracetamol = 102mg/15 × 130 = 884 mg

Cost of drug per mg of active ingredient is as follows;

Excedrin =  $15.51/(200 * 250 mg) = 0.0003102 $/mg

Advil = $15/(300 * 200mg) = 0.00025 $/mg

Tylenol = $14.97/(500mg × 225) = 0.000133 $/mg

Cost of each drug for treatment of headache:

Excedrin = 0.0003102 $/mg × 891.43 mg = $0.278

Advil = 0.00025 $/mg × 587.6 mg = $0.147

Tylenol = 0.000133 $/mg × 884 mg = $0.118

Thus, Tylenol is the cheapest drug for treating headache.

Molar mass of paracetamol = 151 g = 151000 g

There are 6.02 × 10^23 molecules in 151000 mg of paracetamol.

Cost per molecule = 0.000133 $/mg × (15000 mg/6.02 × 10^23)

Cost per molecule = 3.34 × 10^-23 $/molecule

Therefore, the cheapest drug for treating headache is Tylenol at a cost of 3.34×10^-23 $/molecule.

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▲ Two general chemistry students working together in the lab weigh out 0.832 g of CaCl2 2 H2O into a crucible. After heating the sample for a short time and allowing the crucible to cool, the students determine that the sample has a mass of 0.739 g. They then do a quick calculation. On the basis of this calculation, what should they do next? (a) Congratulate themselves on a job well done. (b) Assume the bottle of CaCl2 2 H2O was mislabeled; it actually contained something different. (c) Heat the crucible again, and then reweigh it.

Answers

After heating the crucible, cooling, and weighing the sample as 0.739 g, the students should have heated the crucible again and then reweigh the sample until a constant weight is obtained.

Drying samples with crucibles

The sample being heated, CaCl2 2 H2O, contains water of hydration.

In order to arrive at an anhydrous sample of the salt, all the water molecules must be completely evaporated off by heating.

To do so, the sample should have been heated to constant weight by repeated heating and weighing until there is no longer a change in the weight of the sample.

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I need help it’s calculating ph

Answers

1. pH = -log[H3O+]
= -log(1.0x10^-1)
= 1
2. The pH of 1 is acidic.

If you did not neutralize the saturated citric acid before you poured it down the drain, describe the potential consequences to the plumbing and the environment.

Answers

The plumbing will be corroded and could lower the pH of natural water bodies

What is acidic waste water?

The term acidic waste water means water that has a low pH due to the presence of an acidic substance inside the waste water. As we know, citric acid has a low pH.

If this acid is disposed without proper neutralization, the plumbing will be corroded due to the fact that the acid will react with the plumbing material.

Also, this acidc waste could lower the pH of natural water bodies  when it gets into natural water bodies.

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12)
What are the products of photosynthesis?
A)
glucose and oxygen
B)
carbon dioxide and water
C)
carbon dioxide and oxygen
D)
glucose and carbon dioxide

Answers

The answer is A) glucose and oxygen

Write the formula for each of the following...I'm not telling you what kind of compound it
is, you need to figure it out!!

a. strontium bromide___________


b. tricarbon tetraphosphide_________

c. beryllium phosphate__________

d. calcium phosphide__________

e. manganese (II) thiosulfate_____

f. nitrogen monoxide

Answers

a) SrBr2
b) C3P4
c) Be3(PO4)2
dCa3P2
e) MnS2O3
d) NO

Use this equation: N2 + 3H2 → 2NH3, for the following problems:

1. If 2.5 moles of N2 react, how many grams of NH3 can be produced?




2. If 10.0 moles of NH3 are produced, how many grams of H2 would be required?




Use this equation: B2O3 + 3Mg → 3MgO + 2B, for the following problems:

3. How many grams of boron can be obtained from 8 moles of B2O3?




4. How many grams of magnesium are required to produce 4 moles of boron?




Use this equation: S8 + 12O2 → 8SO3, for the following problems:

5. How many grams of oxygen is needed to produce 7.5 moles of sulfur trioxide?




6. How many grams of sulfur trioxide can be produced from 2 moles of octasulfur?

Answers

Answer:hop this helps

Explanation:

m A 10.00g sample of a substance is found to contain 5.12g of water. What is the percent by of water in the compound? A
. 5.12% B. 4.88% C. 48.8% D. 51.2%​

Answers

Answer:

The answer is D) 51.2%

Explanation:

5.12g of 10.00g of the substance is water:

percentage of water= 5.12 x 10.00 =51.2%

Answer:

b

Explanation:

Select all the correct answers.
Which two generalizations can be made based on what you know about cycles of matter in a closed system?
o New matter is added, and old matter is destroyed.
O Matter changes its physical form, allowing it to return to its original state.
O The amount of matter within the system remains the same.
O Matter and energy can cross the boundaries of the system.
The cycle has a well-defined starting and stopping point.


PLSS HELP

Answers

Answer:

3) The amount of matter within the system remains the same

5) The cycle has a well-defined starting and stopping point.

Explanation:

A closed system is a system that the boundaries of a system cannot be passed by either matter or energy.

Hence, generalisations can be made based on a closed system and the law of conservation of mass which states that matter can neither be created nor destroyed but can only change form.

If you have 1.50 moles of Bismuth (11) Sulfate in 0.750 m3, what would be the density of the material?

Answers

Well this helps that and this
Other Questions
No!" Natalie screamed in pure anguish. She watched her treasured ceramic piece crash to the floor of the art class, in what seemed like slow motion. The piece shattered into irreparable shardsit was going to be Natalies showcase in her art portfolio. Mrs. Ledbetter approached Natalie and gave her a gentle pat on the back. "Thats too bad," said Mrs. Ledbetter, in the most soothing voice she could conjure. Natalie was amazed by Mrs. Ledbetters affection. She had been her toughest teacher by far, and she was only the art teacher. She had pushed Natalie to make her best artwork when she didnt want to push herself. Without Mrs. Ledbetter, Natalie wouldnt be an artist. "Look at all my hard work," said Natalie, pointing at the broken pieces. "What am I going to do? How am I going to rework a piece that took me hours to shape, carve, and glaze? Theres absolutely no way I can finish in time to bring it to my interview for college. The broken piece was crucial to my portfolioIm no artist without it." Natalie and Mrs. Ledbetter sat in complete silence, turning ideas in their head until they ached. When Natalie started to get up, Mrs. Ledbetter stopped her with, "Now, just wait here. Theres no need for such negativity. Look at these pieces on the floorI know that you cant glue them together because it would be first, a waste of time, and second, these shards of ceramic can make something more beautiful. Just think about it." Natalie looked at the pieces and then looked at Mrs. Ledbetter. What is she talking about? Im no artist. Theres no way I can make something beautiful out of something that is so broken and ugly. Theres absolutely no way, thought Natalie. Mrs. Ledbetter got up and left Natalie alone in her self-inflicted misery. The loss consumed Natalie as she stared at the floorshe had put everything into that piece. She tore her eyes away from the pieces and looked at them again. She stared intensely at the pieces and knew right away what she was going to do. She began to pick up the larger pieces with her carvings still intact, and then she rummaged through the smaller pieces for unique shapes and colors. Natalie could absolutely do something with themshe laid the pieces out on the floor and created an image with them. It was better than she had imagined; she was going to be amazing at the interview.How does Mrs. Ledbetter's speech affect Natalie? A. It makes her feel miserable about the situation. B. It inspires her to glue the broken pieces together. C. It motivates her to find a solution to her problem. D. It shocks her because Mrs. Ledbetter is not caring. The speed of 10 cars on a certain highway stretch was recorded below. If the mean of the data is 63.2 with a standard deviation of 6.2, circle all data values with a z-score less than 0.5.{49, 58, 60, 63, 64, 64, 65, 67, 70, 72} What was the first car fitted with an alternator, rather than a direct current dynamo?. Find f(x) and g(x) such that h(x) = (fog)(x). Let g(x) = 7x + 2.h(x) =6/square root of (7x+2) Find the surface area of the above solid.O A 72 cmO B 73 cm. C. 70 cmO a 62cmHelp quickly The brain, spinal cord, and nerves are all major organs of the ___ system. Your sock drawer contains 6 pairs of gray socks, 7 pairs of white socks, 4 pairs of black socks, and 4 pairs of beige socks. You choose a pair of socks from the drawer at random and then replace it. Then you choose a second pair of socks. Find P(white, then gray). First witchsay if th' hadst rather hear it from our mouthsor from our masters'.which modern english interpretation best reflects the meaning of theselines?asuppose you heard it from us instead of from our bosses.b. just say if you want to hear it from us or from our bosses.c.let us know if what we say differs from what our bosses say.d.please tell us if you heard it first from us or from our bosses. How long ago did the first animals adapt to living on land?. Compare using >, < or =7 x 5/4 _ 7 How do you know your answer is correct?Choose 1 answer:A. Because we are multiplying 7 by a fraction that is less than 1.B. Because we are multiplying 7 by a fraction that is equal to 1C. Because we are multiplying 7 by a fraction that is greater than 1. 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