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3 years ago

A complex ion that forms in solution has a structure that:____.

Chemistry

1 answer:

xeze [42]3 years ago

6 0

Answer:

can only be determined experimentally.

Explanation:

In the early days of inorganic chemistry, the structure of complex ions remained a mystery hence the name ''complex''.

These ions appear to have structures that defied accurate elucidation. However, by diligent laboratory investigation, Alfred Werner was able to accurately determine the structure of cobalt complexes. As a result of this, he is regarded as a pathfinder in coordination chemistry.

Hence, the structure of complex ions can only be determined experimentally.

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9. Calculate the approximate number of atoms in a bacterium. Assume the average mass of an atom in the bacterium is 10 times the

Natali5045456 [20]

The question is incomplete, the complete question is :

Calculate the approximate number of atoms in a bacterium. Assume the average mass of an atom in the bacterium is 10 times the mass of a hydrogen atom.(Hint the mass of hydrogen atom is on order of $10^{-27}$ kg and the mass of bacterium is on order of $10^{-15}$ kg

Answer:

The total numbers of atom in bacterium are $10^{12}$ .

Explanation:

Mass of hydrogen atom, m= $10^{-27}$ kg

Mass of bacterium , M= $10^{-15}$ kg

Mass of bacterium atom =m'

Given ; $m' =10\times m$

$m'=10\times 10^{-27} kg=10^{-26} kg$

let the number of atoms in bacterium be N

$m'\times N=M$

$N=\frac{M}{m'}=\frac{10^{-15} kg}{10^{-27} kg}=10^{12}$

The total numbers of atom in bacterium are $10^{12}$ .

5 0

3 years ago

Question 8

wolverine [178]

Answer:

The cell wall provides support for plant cells, the cell membrane allows materials to enter and

exit the cell.

8 0

3 years ago

Will mark the BEST answer as BRANLIEST!

BigorU [14]

Answer:

1. 2Fe + 3CuSO₄ → Fe₂(SO₄)₃ + 3Cu.

2. Pb(NO₃)₂+ 2Kl → PbI₂ + 2KNO₃.

3. Mg + 2HCl → MgCl₂ + H₂.

4. H₂O → H₂ + 1/2O₂.

5. 2Mg + O₂ → 2MgO.

<h3 /><h2>explanation: 1. Combine iron and copper (II) sulfate solution. (Hint: Iron will form the iron (III) ion)</h2>

2Fe + 3CuSO₄ → Fe₂(SO₄)₃ + 3Cu.

It is a redox reaction including replacing Cu with Fe and changing their oxidation states.

That Fe replaces Cu and resulting in ferric sulfate.

2. Combine lead (II) nitrate and potassium iodide solutions.

Pb(NO₃)₂+ 2Kl → PbI₂ + 2KNO₃.

It is a double replacement reaction that lead nitrate reacts with potassium iodide resulting in lead iodide and potassium nitrate.

3. Combine magnesium metal and hydrochloric acid solution.

Mg + 2HCl → MgCl₂ + H₂.

It is a dissolution reaction that HCl dissolve Mg and resulting in Magnesium chloride and hydrogen gas is evolved.

4. Electrolysis (splitting) of water.

H₂O → H₂ + 1/2O₂.

Water electrolysis resulting in splitting of water to produce hydrogen and water.

5. Burning magnesium.

2Mg + O₂ → 2MgO.

It is a combustion reaction that Mg is burned with oxygen to produce magnesium oxide.

Explanation:1. Combine iron and copper (II) sulfate solution. (Hint: Iron will form the iron (III) ion)

2Fe + 3CuSO₄ → Fe₂(SO₄)₃ + 3Cu.

It is a redox reaction including replacing Cu with Fe and changing their oxidation states.

That Fe replaces Cu and resulting in ferric sulfate.

2. Combine lead (II) nitrate and potassium iodide solutions.

Pb(NO₃)₂+ 2Kl → PbI₂ + 2KNO₃.

It is a double replacement reaction that lead nitrate reacts with potassium iodide resulting in lead iodide and potassium nitrate.

3. Combine magnesium metal and hydrochloric acid solution.

Mg + 2HCl → MgCl₂ + H₂.

It is a dissolution reaction that HCl dissolve Mg and resulting in Magnesium chloride and hydrogen gas is evolved.

4. Electrolysis (splitting) of water.

H₂O → H₂ + 1/2O₂.

Water electrolysis resulting in splitting of water to produce hydrogen and water.

5. Burning magnesium.

2Mg + O₂ → 2MgO.

It is a combustion reaction that Mg is burned with oxygen to produce magnesium oxide.

3 0

4 years ago

2C3H6O + 8O2 --> 6CO2 + 6H2O

grigory [225]

Answer: 0.45 moles of $H_2O$ will be produced from 0.15 moles of propanol.

Explanation:

The balanced chemical reaction is:

$2C_3H_6O+8O_2\rightarrow 6CO_2+6H_2O$

$C_3H_6O$ is the limiting reagent as it limits the formation of product and $O_2$ is the excess reagent.

According to stoichiometry :

2 moles of $C_3H_6O$ produces = 6 moles of $H_2O$

Thus 0.15 moles of $V$ will produce= $\frac{6}{2}\times 0.15=0.45moles$ of $H_2O$

Thus 0.45 moles of $H_2O$ will be produced from 0.15 moles of propanol.

7 0

3 years ago

What is the mass of a sample of water that takes 2000 kJ of energy to boil into steam at 373 K. The latent heat of vaporization

Arte-miy333 [17]

Answer:

0.89kg

Explanation:

Q=mL L=specific latent heat

Q=energy required in J

m=mass in Kg

Q=mL

m=Q/L

m=2000000J/2.25 x 10^6 J kg-1

m=0.89kg

3 0

3 years ago