CHEMISTRY HIGH SCHOOL

Which is a characteristic of a weak electrolyte?

Answers

Answer 1

Answer:

Answer:

They are feebly dissociated when dissolved in a solvent.

Explanation:

The electrolyte is a substance which dissociate into cations and anions when dissolved in a solvent.

The strong electrolyte is almost 100% dissociated.

The following are the characteristics of weak electrolyte.

a) they are weakly dissociated

b) they have low degree of dissociation (alph)

c) they have low value of dissociation constant (less than 0.001, generally).

d) they dissociate incompletely and there is dissociation increases with increase in dilution.

Answer 2

Answer: Electrolytes are substances which, when dissolved in water, break up into cations (plus-charged ions) and anions (minus-charged ions). We say they ionize. Strong electrolytes ionize completely (100%), whileweak electrolytes ionize only partially (usually on the order of 1–10%).

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HELP PLEASE. Predict the new element formed when u-238 undergoes 2 alpha decay, 1 beta decay, and 1 gamma radiation. Write nuclear equation.

What is the mass of an electron?A. Electrons do not have mass.
B. -1.0 amu
C. 0.0005 amu

Answers

Option C: 0.0005 amu (i.e. atomic mass units), approx.

Which of the following combinations would result in the largest attractionbetween particles?
Large charges close together
Small charges close together
Large charges far apart from each other
OSmall charges far apart from each other

Answers

Answer:

Explanation:

Large charges close together maybe

In the process of ionization, what is the relationship between the second ionization energy and the third ionization energy?

Answers

The first ionization energy is the energy it takes to remove an electron from a neutral atom. The second ionization energy is the energy it takes to remove an electron from a 1+ ion. (That means that the atom has already lost one electron, you are now removing the second.) The third ionization energy is the energy it takes to remove an electron from a 2+ ion. (That means that the atom has already lost two electrons, you are now removing the third.)
And 2nd ionization energy is higher than 1st ionization energy, 3rd is higher than 2nd, and so forth.

A science class is conducting an experiment that produces noxious fumes. Because of inadequate ventilation, some students begin to feel nauseated and dizzy. The first response should be to

Answers

To solve this we must be knowing each and every concept related to experiment. Therefore, the correct option is option A that is to leave the room and go to an area with fresh air.

What is experiment?

Any procedure where measurements are taken and tests are run to support or disprove a hypothesis is referred to as a scientific experiment.

A science class is conducting an experiment that produces noxious fumes. Because of inadequate ventilation, some students begin to feel nauseated and dizzy. The first response should be to leave the room and go to an area with fresh air.

Therefore, the correct option is option A that is to leave the room and go to an area with fresh air.

To learn more about experiment, here:

brainly.com/question/11205647

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Which of the following best explains why the atomic mass is a fraction between 72 and 73? Options: A. The atomic mass is the weighted average of all the naturally occurring isotopes of the element. B. The atomic mass is determined by the number of protons in the nucleus. C. The atomic mass is a whole number, but it appears as a fraction due to rounding in the periodic table. D. The atomic mass is a decimal number because it represents the total number of electrons in the atom.

Answers

Answer:

The atomic mass is the weighted average of all the naturally occurring isotopes of the element.

Explanation:

A. The atomic mass is the weighted average of all the naturally occurring isotopes of the element. YES. Since there can be several different isotopes of the same element, the weighted average is used in the periodic table to reflect the likely composition of a random sample.

B. The atomic mass is determined by the number of protons in the nucleus. NO

C. The atomic mass is a whole number, but it appears as a fraction due to rounding in the periodic table. NO.

D. The atomic mass is a decimal number because it represents the total number of electrons in the atom. NO.

At what temperature will the following reaction happen spontaneously, given that ΔH=8.91×103J and ΔS= –219.20 J/K? CaSO4(s) + 2HCl(g) → CaCl2(s) + H2SO4(l)A) at 298 K
B) at 100 K
C) It is spontaneous at any temperature.
D) It is not spontaneous at any temperature.