- How do scientists measure the strength of acids and bases? Describe this scale.

Answers

Answer 1
Answer:

pH scale ranges from 0 (highly acidic) – 14 (highly alkaline). The pH of a neutral solution is 7.  Acidic solution is represented by a value less than 7 on the pH scale.

What is pH scale?

pH, quantitative measure of the acidity or basicity of aqueous or other liquid solutions.

Scientists use something called the pH scale to measure how acidic or basic a liquid is.

Although there may be many types of ions in a solution, pH focuses on concentrations of hydrogen ions (H^+) and hydroxide ions (OH^-).

The scale measures values from 0 all the way up to 14. Distilled water is 7 (right in the middle).

pH scale ranges from 0 (highly acidic) – 14 (highly alkaline). The pH of a neutral solution is 7.  Acidic solution is represented by a value less than 7 on the pH scale.

Learn more about pH scale here:

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Answer 2
Answer:

Answer:

they us the pH(potential Hydrogen) scale

Explanation:

Reds are strong acids

yellows are weak acids

green is neutral

blue is kinda basic

and purple is super basic

keep in mind, this is just the litmus paper scale


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1. Which has more energy, an electron close to the nucleus of an atom, or an electron farther away from the nucleus?
What is the element?

Which of the following is not a savanna?a. Cerrado
b. Pampas
C. Llanos
d. Serengeti

Answers

The answer is option B: Pampas

Answer:

Answer is B Pampas

Explanation:

Edge2020

Which requires more energy to move an electron? from n = 3 to n = 4
from n = 2 to n = 3
from n = 1 to n = 2

Answers

Answer:

From n=1 to n=2

Explanation:

Electrons in n=1 are strongly attracted to the nucleus and therefore will require great force to overcome the electrostatic force of attraction to displace them from the energy level to another.

The electrostatic force reduces as you progress to the outer energy levels.

Answer:

C. from n = 1 to n = 2

Explanation:

A.

\Delta E=E_(final)-E_(initial)

\Delta E=-1312[(1)/((n_f^2 ))-\frac {1}{(n_i^2 )}]KJ mol^(-1)

\Delta E=-1312[(1)/((4^2 ))-\frac {1}{(3^2 )}]KJ mol^(-1)

\Delta E=-1312[(1)/((16 ))-\frac {1}{(9)}]KJ mol^(-1)

\Delta E=-1312[0.0625-0.111]KJ mol^(-1)

\Delta E=64 KJ mol^(-1)

B.

\Delta E=E_(final)-E_(initial)

\Delta E=-1312[(1)/((n_f^2 ))-\frac {1}{(n_i^2 )}]KJ mol^(-1)

\Delta E=-1312[(1)/((3^2 ))-\frac {1}{(2^2 )}]KJ mol^(-1)

\Delta E=-1312[(1)/((9 ))-\frac {1}{(4)}]KJ mol^(-1)

\Delta E=-1312[0.111-0.25]KJ mol^(-1)

\Delta E=182 KJ mol^(-1)

C.

\Delta E=E_(final)-E_(initial)

\Delta E=-1312[(1)/((n_f^2 ))-\frac {1}{(n_i^2 )}]KJ mol^(-1)

\Delta E=-1312[(1)/((2^2 ))-\frac {1}{(1^2 )}]KJ mol^(-1)

\Delta E=-1312[(1)/((4))-\frac {1}{(1)}]KJ mol^(-1)

\Delta E=-1312[0.25-1]KJ mol^(-1)

\Delta E=984 KJ mol^(-1)

The strong nuclear force holds together which two particles in an atom? Electrons and neutrons Protons and electrons Neutrons and protons Neutrons and beta particles

Answers

Answer:

Protons and neutrons

Explanation:

it confines quarks into hadron particles such as the proton and neutron. ... On a larger scale (about 1 to 3 fm), it is the force (carried by mesons) that binds protons and neutrons (nucleons) together to form the nucleus of an atom.

Answer:

protons and neutrons

Explanation:

they are the two sides of the atom that are around the nucleus.

Why might a major volcanic eruption lead to cooler temperatures over a large area around the volcano ?

Answers

The dense aerosol cloud created caused decreases in the amount of solar radiation that reached the Earths surface.

The process of making mRNA from DNA is called *​

Answers

Answer:

Transcription

Explanation:

What does it mean for a backyard ecosystem to have a low diversity

Answers

it means there is a lot of the same thing and not many others