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Assoli18 [71]
3 years ago
6

A neutral atom and an ion of the same element have the same number of _______. They have a different number of _______ and hence

reactivity.
Chemistry
1 answer:
kow [346]3 years ago
6 0

Answer:

a. Protons

b. Electrons

Explanation:

The atomic number of an element is also the proton number. Since the atom is neutral, the proton number and the electron number are equal. But this is different for an ion in that the element has either gain or loss an electron and so, the electron number differ from the proton number.

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Practice: Balance each of the chemical equations below. (Some equations may already be in balance.) In the space to the right, c
vladimir1956 [14]

Explanation:

A. AgNO3 + KCl --> AgCl + KNO3

Reaction is already balanced.

Type = Double Replacement

B. H2O + SO3 --> H2SO4

Reaction is already balanced.

Type = Synthesis

C. KI + Cl2 --> KCl + I2

Balanced Equation = 2KI + Cl2 --> 2KCl + I2

Type = Single Replacement

D. NaHCO3 --> Na2CO3 + H2O + CO2

Balanced Equation = 2NaHCO3 --> Na2CO3 + H2O + CO2

Type = Decomposition

E. Zn + HCl  --> ZnCl2 + H2

Balanced Equation = Zn + 2HCl  --> ZnCl2 + H2

Type = Single Replacement

F. BaCl2 + Na2SO4 --> BaSO4 + NaCl

Balanced Equation =  BaCl2 + Na2SO4 → 2NaCl + BaSO4  

Type = Double Replacement

G. C3H8 + O2 --> CO2 + H2O

Balanced Equation =  C3H8 + 5O2 → 3CO2 + 4H2O  

Type = Single Replacement

H. Al + CuCl2 --> AlCl3 + Cu

Balanced Equation =   2Al + 3CuCl2 → 2AlCl3 + 3Cu  

Type = Single Replacement

3 0
3 years ago
How many atoms are present in 55 grams of iron
anastassius [24]

Answer:

Atomic mass of iron is 55.9 amu.

Explanation:

So gram atomic mass of iron is 55.9 grams. Now we know the formula No. of moles = Given weight/ Molar Atomic weight. So, no. of moles = 65/55.9 No. of atoms = no. of moles x Avogadro number.

4 0
3 years ago
What is a stored energy
professor190 [17]
Energy storage is the capture of energy produced at one time for use at a later time. A device that stores energy is generally called an accumulator or battery.
6 0
3 years ago
Hard water , which contains Mg2+ and Ca2+ ions tends to form a ring in a bathtub due to its reaction with the solute anions in s
Zina [86]

Answer:

It is an example of a precipitation reaction. Soap contains the conjugate bases of fatty acids, and these anions (carboxylates of fatty acids) tend to form insoluble salts with magnesium and calcium cations.

Explanation:

Usual soaps are made by a reaction called saponification, in which triglycerides (which are the main components of animal and vegetal fats and oils) react with a strong base (like KOH or NaOH), breaking the triglyceride into three fatty acid conjugate bases (carboxylates) and a molecule of glycerol.

These fatty acid conjugate bases are formed by a long saturated carbon chain and an ionised tip (i attached the structure of a generic fatty acid carboxylate). These anions form very insoluble salts with Calcium of Magnesium cations, and thus a precipitate is formed, therefore the answer is B.

4 0
3 years ago
What happens when baking soda and vinegar are mixed together.
egoroff_w [7]

Answer: Mixing vinegar and baking soda initiates a chemical reaction that produces carbon dioxide and water.

Explanation:

8 0
2 years ago
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