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ipn [44]
3 years ago
9

Which of the following is true in regard to ions?

Chemistry
2 answers:
vfiekz [6]3 years ago
7 0
<span>An ionized atom has a number of protons that is unequal to the number of electrons. - I took the Penn exam, 100% sure!</span>
Marysya12 [62]3 years ago
5 0

<u>Answer:</u> The correct answer is Option A.

<u>Explanation:</u>

There are 3 subatomic particles present in an atom. They are: protons, electrons and neutrons.

Protons carry positive charge, electrons carry negative charge and neutrons does not carry any charge.

Any neutral atom has an equal number of protons and electrons.  An ion is formed when atom looses or gain electron.

  • If an atom gains electrons, it will have more number of electrons than protons. Thus, it will carry negative charge and form an anion.
  • If an atom looses electrons, it will have less number of electrons than protons. Thus, it will carry positive charge and forms a cation.

Thus, an ionized atom will always have unequal number of protons and electrons.

Hence, the correct answer is Option A.

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Pb(NO3)2 (aq) + 2 NaI (aq) --&gt; PbI2 (s) + 2 NaNO3 (aq)
Blizzard [7]
Pb(NO3)2 (aq) + 2 NaI (aq) --> PbI2 (s) + 2 NaNO3 (aq)
Starting with with 200.0 grams of Pb(NO3)2 and 120.0 grams of NaI:
A. What is the limiting reagent?
B. How many grams of PbI2 is theoretically formed?
C. How many grams of the excess reactant remains?
D. If 48 grams of NaNO3 actually formed in the reaction, what is the percent yield of this reaction?
8 0
3 years ago
1. Write the equilibrium constant expression for the following:
melisa1 [442]

Answer:

c

Explanation:

it could honestly be wrong but I'm not sure

3 0
3 years ago
The sodium salt, NaA, of a weak acid is dissolved in water; no other substance is added. Which of these statements (to a close a
ddd [48]

Answer:

Your question is somewhat poorly worded, even so what I can contribute is the statement is false, since the salt is sodium chloride, where its severe chemical formula NaCl, is a SALT not an acid and if it dissolves in water, seriously the solute of a solution, where water plays the role of the solvent

Explanation:

Sodium chloride is a binary salt, very easy to dissolve in water, it is also called the famous table salt, since it can be ingested in food even though it is not so recommended against high blood pressure conditions.

8 0
3 years ago
1.5 moles are present in 60.0 grams of calcium.
Andrew [12]

Answer:

True.

Explanation:

To know which option is correct, let us calculate the number of mole present in 60g of calcium. This is illustrated below:

Mass of Ca = 60g

Molar Mass of Ca = 40g/mol

Number of mole Ca =....?

Number of mole = Mass/Molar Mass

Number of mole of Ca = 60/40

Number of mole Ca = 1.5 moles.

From the calculations made above, we can see that 1.5 moles are present in 60.0 grams of calcium

3 0
3 years ago
The transfer of a section of DNA from one organism into the DNA of another organism by scientist is called
denpristay [2]
Transgenetics

hope this helps!
5 0
3 years ago
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