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JulijaS [17]
3 years ago
5

A stable atom that has a large nucleus most likely contains

Chemistry
2 answers:
Gre4nikov [31]3 years ago
7 0
Most atoms have more neutrons than protons which accounts for basically half of the nucleuses mass.
Zina [86]3 years ago
3 0

Answer: Option (a) is the correct answer.

Explanation:

For an atom to be stable in nature, it is required that the atom must have more number of neutrons as compared to protons.

But if the atom has more number of protons then due like positive charge more repulsion will occur inside the nucleus and therefore, the atom will become unstable. This is because then electrostatic force of repulsion will be greater than the nuclear binding force.

Thus, we can conclude that a stable atom that has a large nucleus most likely contains more neutrons than protons.

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just olya [345]

Answer:

phosphorus.

Explanation:

The atomic number of phosphorus is 15 so the protons will be 15.

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2 years ago
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How is milk souring a chemical change?
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How many grams of chromium metal are plated out when a constant current of 8.00 A is passed through an aqueous solution containi
Vsevolod [243]

Answer:

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Mg + 2HCl → MgCl2 + H2
deff fn [24]

Answer:

Explanation:

This is a limiting reactant problem.

Mg(s)

+

2HCl(aq)

→

MgCl

2

(

aq

)

+ H

2

(

g

)

Determine Moles of Magnesium

Divide the given mass of magnesium by its molar mass (atomic weight on periodic table in g/mol).

4.86

g Mg

×

1

mol Mg

24.3050

g Mg

=

0.200 mol Mg

Determine Moles of 2M Hydrochloric Acid

Convert

100 cm

3

to

100 mL

and then to

0.1 L

.

1 dm

3

=

1 L

Convert

2.00 mol/dm

3

to

2.00 mol/L

Multiply

0.1

L

times

2.00 mol/L

.

100

cm

3

×

1

mL

1

cm

3

×

1

L

1000

mL

=

0.1 L HCl

2.00 mol/dm

3

=

2.00 mol/L

0.1

L

×

2.00

mol

1

L

=

0.200 mol HCl

Multiply the moles of each reactant times the appropriate mole ratio from the balanced equation. Then multiply times the molar mass of hydrogen gas,

2.01588 g/mol

0.200

mol Mg

×

1

mol H

2

1

mol Mg

×

2.01588

g H

2

1

mol H

2

=

0.403 g H

2

0.200

mol HCl

×

1

mol H

2

2

mol HCl

×

2.01588

g H

2

1

mol H

2

=

0.202 g H

2

The limiting reactant is

HCl

, which will produce

0.202 g H

2

under the stated conditions.

pls mark as brainliest ans

7 0
2 years ago
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