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motikmotik
4 years ago
6

When you are balancing chemical reactions ('equations'), what must you never touch?

Chemistry
2 answers:
timofeeve [1]4 years ago
8 0

You should never touch the subscripts, as that will change the composition. Hope I helped!

frozen [14]4 years ago
6 0

<u>Answer:</u>

The correct answer option is: the number in subscript.

<u>Explanation:</u>

When you are balancing any chemical equation, you must never touch or change the number in subscript of the molecule of a chemical or compound.

The number in subscript of any molecule or compound shows the ratio of atoms that makes up that certain molecule or compound.

You can only change or alter the number written left to the molecule of compound to balance the equation.

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¿Qué tipos de contaminantes identificamos?¿cuál de ellos tiene mayor concentración de los gases?¿Qué sucedió con la calidad del
docker41 [41]

Answer:

Bueno al principio pero empeorando con el paso del tiempo.

Explicación:

La calidad del aire es buena al inicio de la pandemia y hay menos infección en el aire pero con el paso del tiempo la infección se propaga a un ritmo más rápido y la calidad del aire se contamina con la infección que infecta a más personas. La pandemia reduce su intensidad cuando la gente sigue las reglas saludables que previenen la propagación de la pandemia en esa localidad por lo que podemos decir que la última semana de pandemia tiene menor número de pacientes.

6 0
3 years ago
N2 + 3 H2 --&gt; 2 NH3
Anna71 [15]

Answer:

4 moles of NH3 will be produced

Explanation:

The reaction expression is given as:

            N₂  +  3H₂  →  2NH₃

We have to check that the equation of the reaction is balanced.

 Then;

      if 2 mole of N₂ reacts;

 1 mole of N₂ will react with 3 mole of H₂ to produce 2 mole of NH₃

2 mole of N₂ will react with (2x3)mole of H₂ to produce (2x2)mole of NH₃

                                                    6mole of H₂ to produce      4 mole of NH₃

7 0
3 years ago
The electron configuration that belongs to the atom with the lowest first ionization energy is?
sasho [114]

The electron configuration that belongs to the atom with the lowest first ionization energy is francium.

<h3>What is ionization energy? </h3>

Ionization energy is defined as the minimum amount of energy required to remove the most loosely electron present in outermost shell.

<h3>Ionization energy across period</h3>

Ionization energy increase as we move from left to right in the period. This can be explained as when we move from left to right along period new electron is added to the same shell which increase the nuclear charge. Hence results int he decrease in size. Due to this decrease in size more energy is required to remove electron from outermost shell.

<h3>Ionization energy along group</h3>

Ionization energy decrease as we move from top to bottom along group. This can be explained as we move from top to bottom new electron is added to new shell. Due to addition of new shell the size of atom increases which results in the decrease in the nuclear charge. Due to this less amount of energy is needed to remove an electron.

Thus, we concluded that the electron configuration that belongs to the atom with the lowest first ionization energy is francium.

learn more about ionization energy:

brainly.com/question/1602374

#SPJ4

4 0
2 years ago
given the diagram below which contains a mixture of three acids in an aqueous solution, identify the color of the sphere that re
charle [14.2K]

The acid having the yellow anion is a weak acid.

The weak acid is the acid that does not dissociate completely in solution. Strong acids are known to dissociate completely in solution. Hence, their cations and anions do not occur together in solution.

Weak acids acids do not dissociate in solution hence, we can still spot the cations connected to their anions in solution. Hence, the acid having the yellow anion is a weak acid.

Learn more: brainly.com/question/8743052

7 0
2 years ago
There are many advantages to using nuclear power to generate electricity. There are also many disadvantages. Choose all of the a
elena55 [62]

Answer:

abc

Explanation:

6 0
4 years ago
Read 2 more answers
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