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kkurt [141]
3 years ago
10

Zinc carbonate and perchloric acid. complete and balance the following reactions

Chemistry
1 answer:
Ket [755]3 years ago
5 0

Answer:

ZnCO3 + 2HClO4 = Zn(ClO4)2 + CO2 + H2O

Explanation:

ZnCO3 + 2HClO4 = Zn(ClO4)2 + H2CO3

ZnCO3 + 2HClO4 = Zn(ClO4)2 + CO2 + H2O

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Would you expect a Boron (B) atom with atomic mass = 9.999 to be stable?
charle [14.2K]

The balance of forces allows to find the result for the question if the isotope of boron 9.99 una  is stable:

  • The boron isotope of mass 9.99 uma is unstable because the repulsive force increases.

The stability of atomic nuclei depends on the balance the force is electrostatic repulsion between the protons and the strong interaction of attraction.

One way to achieve this balance is to increase the separation of the protons with uncharged particles between them, the neutral ones, the strong interaction is of the same magnitude for protons and neutrons, therefore the repulsion is decreased and the strong attraction interaction is maintained. .

In the case of Boron, which has 5 protons, the stable structures have more atomistic 10 and 11 una, which is why it has 5 and 6 neutrons each. Therefore each proton has  a neutrons next to it and in the other case a proton at the end has two neutrons, this causes the distance between the protons to increase, decreasing the electrostatic repulsion.

It indicates that we have a Boron nucleus of mass 9.999. The number of protons must remain fixed, therefore there are only 4 neutrons.

Consequently, some of the protons does not have a neutron next to it and can approach the other proton, therefore the electrostatic repulsion increases and the stability of the atom decreases.

In conclusion, using the balance of Forces we can find the result for the question if the isotope of boron 9.99 una is stable:

  • The boron isotope of mass 9.99 amu is unstable because the repulsive force increases.

Learn more about nuclear stability here: brainly.com/question/897383

6 0
3 years ago
How many gallons of a 60​% antifreeze solution must be mixed with 70 gallons of 25​% antifreeze to get a mixture that is 50​% ​a
Neporo4naja [7]

Answer:

The answer to your question is 175 gallons

Explanation:

Data

60% antifreeze solution  volume = ? = x

25% antifreeze solution   volume = 25%

Final concentration 50%

Process

              0.6x + 0.25(70) = 0.5(70 + x)

Simplification

              0.6x + 17.5 = 35 + 0.5x

              0.6x - 0.5x = 35 - 17.5

                          0.1x = 17.5

                              x = 17.5/0.1

Result

                              x = 175 gallons

6 0
4 years ago
A gymnast whose weight is 5 10 N hangs from the middle of a bar supported by two vertical strands of rope. What is the tension i
mamaluj [8]
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4 0
3 years ago
How can you make a solution saturated
Vlada [557]
You add solute until it can't dissolve anymore.
3 0
4 years ago
What is a cercaria?<br> *zoology
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a free swimming larval stage in which a parasitic fluke passes from an intermediate host to another intermediate host

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