Calculate the pH of a 0.0150 M HNO3 solution. Assume HNO3
dissociates completely in water.
pH =

Answers

Answer 1

Answer:

~1.82381

Explanation:

Since it dissociates in water there will be equally amounts of H and NO3. Therefore, there will be 0.0150 M H+ ions. Simply take the -log(H+) = pH, so -log(0.0150) = ~1.82

Answer 2

The pH of the given solution when HNO3 dissociates completely in water is 1.82381.

Calculation of the pH:

Since it is the 0.0150 M HNO3 solution. Also we assume that HNO3

dissociates completely in water. So there should be equivalent amount of H and NO3.

So, it can be like

-log(H+) = pH,

so -log(0.0150)

= 1.82

Hence, we can conclude that The pH of the given solution is 1.82381.

Learn more about water here: https://brainly.com/question/18099687

Related Questions

Which of the solutions has the highest concentration? (Don't Have To Answer Why)
A. Solution A, because less solvent results in a higher concentration of NaCl.
B. Solution B, because more solvent results in a higher concentration of NaCl.
C. Solution C, because less solvent means less solute.
D. Solution D, because more solvent means more solute.

Answers

Answer:

Explanation:

The answer is Solution A

When ice is melting, what happens with the temperature?

Answers

Answer:

When ice is melting the temperature increases.

when ice is melting the temperature surrounding increases

1.

A car tire was inflated to 75 kPa at the repair shop where the

temperature is 15 °C. What is the pressure of the tire on the trip home

if the temperature of the road surface is 32 °C? (Write your answer

nearest whole number)

kPa

Answers

Answer:

THE PRESSURE OF THE TIRE ON THE TRIP HOME AT THE ROAD SURFACE TEMPERATURE OF 32°C IS 160 kPa.

Explanation:

Initial Pressure = 75 kPa

Initial temperature = 15 °C

Final temperature = 32 °C

Final pressure = unknown

Using the combined equation of gases;

P1V1/T1 = P2V2/ T2

Since the tire will have the same volume of air in it showing that volume of constant both at the repair shop and on the road surface.

The relationship between pressure and temperature is used with constant volume.

P1/T1 = P2/ T2

75 kPa / 15 °C = P2 / 32 °C

P2 = 75 kPa * 32 °C / 15 °C

P2 = 2400 kPa °C / 15 °C

P2 = 160 kPa.

So therefore, the pressure of the tire on the trip home when the temperature of the road surface is 32°C is 160 kPa.

Which student had to stop to adjust a pedal during the race? (Student A or Student B) Explain your answer.

Answers

Answer:

student b

Explanation:

Answer:

student b

Explanation:

there was no constant rate of change when it gets to 800.. he stays there

Lots of pts! Beeg brain if correct! No links!
list of materials: Safety pins, Salt, Plastic beads, and raw pasta noodles.
Write the observable properties of the mixture listed and how to separate it.

Answers

Answer:

Explanation:

the raw noodles are thin and long, and the pins are sharp. The beads are round, and the salt is grainy. To seperate them, take out the safety pins with a magnet, then the noodles, then the beads. Leave the salt. Then BOOM. They are seperated.

Nose
Sorry ejejejjeejjejejejeje

A substance is _____. This means it can be pulled or drawn into a wire.

A. malleable

B. ductile

C. conductive

D. corrosive

Answers

Answer:

B. ductile

Explanation:

your welcome

Answer:

Ductile

Explanation:

A. Malleable - (of a metal or other material) able to be hammered or pressed permanently out of shape without breaking or cracking.

B. (of a metal) able to be drawn out into a thin wire.

C. having the property of conducting something (especially heat or electricity).

D. tending to cause corrosion.

Which statement about plants is the most accurate?
Group of answer choices

Plants undergo both photosynthesis and cellular respiration

Plants undergo neither photosynthesis nor cellular respiration.

Plants undergo photosynthesis but not cellular respiration.

Plants undergo cellular respiration but not photosynthesis.

Answers

Plants undergo both photosynthesis and cellular respiration

Plants undergo both

ATOMS WE LOVE ATOMS, answer this and get points , also thx for your help :)

Answers

Answer:C because they have to I have the same mass before and after the equation.

Explanation:

HOPE THIS HELPED!! :) ;) <3<3

2. Very obvious, Do i need to explain?

Oil is a powerful source of energy used for cars, machines, and many other purposes. While studying sources of energy that could replace the use of oil, a student thinks about solar power, wind power, nuclear power, and electric batteries. The students asks,"Which type of source will waste the least energy and provide the most energy in all situations?"

Which best describes why a scientist would ask a different question than this one?

O The question asks about subjective personal preferences regarding energy.
O The question focuses on the objective measurements of amounts of energy.
O The question has too wide of a focus, as though all situations can be studied at once.
O The question is focused on the future and finding new answers about changing needs.

Answers

Answer:

Explanation:

scientists usually focus on one specific problem, rather than a whole range. so the answer would be that it's too wide a focus.

btw this is where the crown is on the bottom of the question

Oil is a powerful source of energy used for cars, machines, and many other purposes. While studying sources

Answer:

Explanation:

What happens to the atoms that make up hydrogen fuel as it burns?

Answers

Answer:

When hydrogen fuel burns, its atoms combine with oxygen atoms in the air, which creates a chemical reaction that releases energy in the form of heat and light. The hydrogen atoms lose their outermost electrons, becoming positively charged ions (protons). These ions combine with the oxygen atoms to form water molecules (H2O), which evaporate into the air as steam. Therefore, the atoms that make up hydrogen fuel ultimately become part of water molecules during the process of combustion.

Explanation:

When hydrogen fuel burns, its atoms combine with oxygen atoms to form water molecules. So the atoms that make up hydrogen fuel become part of the water molecules.

Robert is thinking about buying a new refrigerator. His old refrigerator runs at about 43% efficiency. Which most likely accounts for the remaining 57% of the energy?

A: It is used up by the light in the refrigerator.
B: It is released to the surroundings as heat
C: It is converted into mechanical energy.
D: It stored as a form of potential energy.

Answers

Answer:

D it stores as a firm of potential energy

I am pretty sure it is d.

Write a summary of what you have learned about how incoming forces and outgoing forces are related (newton's cradle)

Answers

Newton's Cradle is a classic physics demonstration that illustrates the principles of conservation of momentum and energy, as well as the relationship between incoming and outgoing forces. The device consists of a series of equally spaced, suspended metal balls (typically five) that are aligned in a horizontal row. When one ball is lifted and released, it strikes the next ball in line, causing a transfer of force through the remaining balls, ultimately resulting in the last ball swinging outward. This process repeats as the balls continue to collide.

The relationship between incoming and outgoing forces in Newton's Cradle can be understood through the following concepts:

Conservation of Momentum: In a closed system with no external forces, the total momentum before a collision is equal to the total momentum after the collision. In Newton's Cradle, the momentum of the incoming ball is transferred through the stationary balls and eventually to the last ball, which swings outward with a momentum equal to the initial ball's momentum.
Conservation of Energy: Similarly, the total mechanical energy (kinetic and potential) in a closed system remains constant. In the context of Newton's Cradle, the kinetic energy of the incoming ball is transferred through the stationary balls, and eventually to the last ball, which swings outward with kinetic energy equal to that of the incoming ball. Potential energy is also involved as the balls swing and momentarily come to rest at their highest points.
Elastic Collisions: Newton's Cradle demonstrates nearly perfect elastic collisions, wherein both momentum and kinetic energy are conserved. In reality, some energy is lost to heat and sound, making the collisions slightly inelastic. However, the demonstration is still a useful approximation for understanding the transfer of forces.
Force Transfer: The incoming force exerted by the first ball is transmitted through the intervening balls to the last ball without causing any significant movement of the middle balls. This occurs because the balls are very close together and the time taken for the force to be transferred is minimal, allowing the middle balls to remain nearly stationary.
In summary, Newton's Cradle demonstrates the relationship between incoming and outgoing forces through the principles of conservation of momentum and energy, elastic collisions, and force transfer. The device provides a clear visual representation of these fundamental concepts in physics.

Newton's Cradle is a classic physics demonstration that illustrates the conservation of momentum and energy. The cradle consists of a row of suspended metal spheres that are free to swing back and forth. When one of the spheres is lifted and released, it swings down and collides with the next sphere in the row. This collision causes the first sphere to come to a stop and transfers its momentum and energy to the second sphere, which in turn transfers it to the third sphere, and so on. The incoming force from the first sphere is transferred through the chain of spheres as outgoing forces, causing the last sphere to swing upward to the same height as the first. The total momentum and energy of the system remain constant throughout the process, demonstrating the principle of conservation of momentum and energy.

What type of person studies and collects data on the weather?

Answers

The answer would be a Meteorologist

Meteorologist is a person who studies and collects data

What is the charge on the Cr in Cr2O72-

Answers

Answer:

+6.

Explanation:

So, a chromium atom here has an oxidation number of +6.

In the dichromate ion, the oxidation number of chromium is+6. The sum of the oxidation numbers in Cr2O72-, a polyatomic ion, is -2, the charge of the ion.

When the speed of the bottle is 2 m/s, the KE is kg m2/s2. When the speed of the bottle is 3 m/s, the KE is kg m2/s2. When the speed of the bottle is 4 m/s, the KE is kg m2/s2. When the speed of the bottle is 5 m/s, the KE is kg m2/s2. When the speed of the bottle is 6 m/s, the KE is kg m2/s2.
instructions
In this part of the experiment, you will be changing the speed of the bottle by dropping it from different heights. You will use the same mass, 0.250 kg, for each trial, so record this mass in Table B for each velocity. Then, calculate the expected kinetic energy (KE) at each velocity. Use the formula KE = mv2,
where m is the mass and v is the speed. Record your calculations in Table B of your Student Guide.

Answers

Answer:

Based on the given instructions, you need to calculate the expected kinetic energy (KE) at each velocity using the formula KE = mv^2, where m is the mass and v is the speed. The mass is given as 0.250 kg.

Table B: Calculation of Kinetic Energy (KE)

Speed (m/s)Mass (kg)KE (kg m^2/s^2)20.2500.50030.2500.75040.2501.00050.2501.25060.2501.500

To calculate the kinetic energy at each velocity, multiply the mass (0.250 kg) by the square of the velocity.

For example, when the speed of the bottle is 2 m/s: KE = (0.250 kg) * (2 m/s)^2 = 0.250 kg * 4 m^2/s^2 = 1.000 kg m^2/s^2

Perform similar calculations for the other velocities and record the results in Table B.

Answer:

Explanation:mass of the bottle in each case is M = 0.250 kg

now as per given speeds we can use the formula of kinetic energy to find it

1) when speed is 2 m/s