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3 years ago

The total number of electrons in a neutral atom must always be equal to the atoms

Chemistry

1 answer:

RSB [31]3 years ago

3 0

Answer:

True

Explanation:

Because the number of electrons in a neutral atom equals to the number of protons.

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How do you balance S8+F2=SF6

Brums [2.3K]

Balance the followig example of a heterogeneous equilibrium and write its reaction quotient, Qc: <span>S8 + F2=SF6 </span><span>i've balanced it i think i got </span><span>S8 +24F2 =8SF6 but when i try it it keeps telling me that i'm wrong when i write out the Qc</span>

3 0

3 years ago

The regulation of mineral ions in the cellular fluids of biological systems is performed by ion pumps that selectively transport

siniylev [52]

Answer:

The smallest ion is : Mg 2+

Increasing Order of size :

Mg2+ < Na+ < F- < O2-

Explanation:

Isoelectronic Species : Species having same number of electrons .

$Z_{eff}$ = Effective attraction of the nucleus felt by the outer shell electrons.

<u>The size of the atom is decided by </u>:

Its atomic number (number of proton)

the effective nuclear charge.

As the <u>positive charge increases</u> the<u> size</u> of the <u>ion decreases.</u>

As the<u> negative charge increases </u>the<u> size </u>of ion also<u> increases.</u>

<u>Negative charged ions</u> : F- , O2-

Negative charge are formed when electrons are added to the atoms.

<u>When Negative ion is formed</u> :

Number of proton remain same

Number of electron get increased

Hence it becomes difficult for the proton in the nucleus to attract the electrons.

Electron - electron Repulsion increases

$Z_{eff}$ = decreases

<u>Size increase</u>

<u>Positive charged ions</u> : Na+ , Mg2+

Positive charge are formed when electrons are removed from the atoms.

<u>When Positive ion is formed</u> :

Number of proton remain same

Number of electron get reduced

Hence more attraction of the nucleus is felt by the outer electron.

Electron - electron Repulsion Decreased

$Z_{eff}$ = increases

<u>Size decreases</u>

<u></u>

8 0

4 years ago

Are the following instructions for diluting a 10.0 M solution to a 1.00 M solution correct: ""Take 100.0 mL of the 10.0 M soluti

Molodets [167]

The following directions for diluting a 10.0 M answer to a 1.00 M solution is no longer correct.

<h3>.What is the rule of dilution?</h3>

A popular rule to use in calculating the attention of solutions in a sequence is to multiply the unique concentration by means of the first dilution factor, this by the second dilution factor, this by the 1/3 dilution factor, and so on till the ultimate attention is known.

Example: A 5M answer of HCl is diluted 1/5.

<h3>How do you do a 1 in 10 dilution?</h3>

For example, to make a 1:10 dilution of a 1M NaCl solution, you would combine one "part" of the 1M solution with 9 "parts" of solvent (probably water), for a total of ten "parts." Therefore, 1:10 dilution ability 1 part + 9 components of water (or different diluent).

Learn more about dilution here:

<h3>brainly.com/question/25292980</h3><h3 /><h3>#SPJ4</h3>

7 0

2 years ago

Galvanic cell runs on the following reaction: Al (s) + Fe3+ (aq) → Al3+ (aq) + Fe (s) Draw a diagram for this Galvanic cell, lab

MAVERICK [17]

See image for details.

5 0

4 years ago

Andreyy89

Answer:

The answer to your question is the second option

Explanation:

Reaction

Al₂(SO₄)₃ + KOH ⇒ Al(OH)₃ + K₂SO₄

Process

1.- Check if the reaction is already balanced

Reactants Elements Products

2 Aluminum 1

3 Sulfur 1

13 Oxygen 7

1 Potassium 2

1 Hydrogen 3

The reaction is unbalanced

2.- Balance the reaction

1Al₂(SO₄)₃ + 6KOH ⇒ 2Al(OH)₃ + 3K₂SO₄

Reactants Elements Products

2 Aluminum 2

3 Sulfur 3

18 Oxygen 18

6 Potassium 6

6 Hydrogen 6

Now the reaction is balanced. The coefficients are 1, 6, 2, 3.

5 0

3 years ago

Read 2 more answers