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4 years ago

How do metals on the periodic table tend to achieve the octet rule?

1 answer:

Rudiy274 years ago

7 0

By either gaining or losing an electron.

So for the halogens (group 17) they have 7 valence electrons so they need one more to have a full outer shell. They will form a bond with another element that can give an electron. Typically a halogen will bond with an alkaline metal because they have 1 valence electron in their outer shells. This sharing of electrons (covalent bond) satisfies both elements, giving them full outer shells.

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What value must be known if the accuracy of an experiment is to be determined

andrezito [222]

To evaluate the accuracy of a measurement, the measured value must be compared to the correct value. To evaluate the precision of a measurement, you must compare the values of two or more repeated measurements.

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3 years ago

What element in the second period has the largest atomic radius?

madreJ [45]

Answer:

b. lithium

Explanation:

furthest to the left in second period

3 0

4 years ago

During resperation______.

Vikki [24]

D. oxygen is used to break down glucose into energy

Explanation:

During respiration, oxygen is used to break down glucose into energy:

C₆H₁₂O₆ + O₂ → CO₂ + H₂O + energy

In the process of respiration, oxygen gas combines with glucose to liberate energy.

Respiratory system in the body is responsible for the metabolic break down of food to provide energy for the working of the human body.
Chemical energy in glucose is broken down to produce other forms of energy most especially heat.
The by product is usually carbon dioxide and water vapor.

Learn more:

Respiration brainly.com/question/3447259

#learnwithBrainly

4 0

4 years ago

To find the number of neutrons in a atom, you subtract the number of_____ from the mass number.

Slav-nsk [51]

You can simply subtract the atomic number from the mass number in order to find the number of neutrons.

8 0

3 years ago

Read 2 more answers

Determine the molar mass of CuSO4 (the solute) in a 1.0M aqueous solution of CuSO4

inna [77]

Answer:

See explanation.

Explanation:

Hello,

In this case, we could have two possible solutions:

A) If you are asking for the molar mass, you should use the atomic mass of each element forming the compound, that is copper, sulfur and four times oxygen, so you can compute it as shown below:

$M_{CuSO_4}=m_{Cu}+m_{S}+4*m_{O}=63.546 g/mol+32.00g/mol+4*16.00g/mol\\\\M_{CuSO_4}=159.546g/mol$

That is the mass of copper (II) sulfate contained in 1 mol of substance.

B) On the other hand, if you need to compute the moles, forming a 1.0-M solution of copper (II) sulfate, you need the volume of the solution in litres as an additional data considering the formula of molarity:

$M=\frac{n_{solute}}{V_{solution}}$

So you can solve for the moles of the solute:

$n_{solute}=M*V_{solution}$

Nonetheless, we do not know the volume of the solution, so the moles of copper (II) sulfate could not be determined. Anyway, for an assumed volume of 1.5 L of solution, we could obtain:

$n_{solute}=1mol/L*1.5L=1.5mol$

But this is just a supposition.

Regards.

4 0

3 years ago