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2 years ago

Which element is most likely to allow electricity to pass through it?

Chemistry

2 answers:

pav-90 [236]2 years ago

6 0

Copper because it’s a metal

yKpoI14uk [10]2 years ago

4 0

Hello,
I have attached a periodic table to allow you to further understand my answer. We know elements are categorized in groups of Metals, Nonmetals, and metalloids. Let’s analyze each element. Sulfur is a nonmetal which mean it does not conduct well and does not have a good appearance, the same applies to all the other non metals on this list, including sulfur and helium. Copper is our only answer in which it fits and electricity can pass through/conduct easily. So our answer is copper. I hope this helps you with your assignment.

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Aluminum reacts with chlorine gas to produce aluminum chloride crystals. How many grams of aluminum chloride will be produced if

valina [46]

Answer:

596 g of AlCl₃

Explanation:

The reaction is:

2Al + 3Cl₂ → 2AlCl₃

Firstly we need to determine the limiting reactant and we need to determine the moles of each

135 g . 1 mol / 26.98 g = 5 moles of Al

475 g . 1mol / 70.9 g = 6.7 moles of chlorine

Ratio in the reaction is 3:2

3 moles of chlorine gas need 2 moles of Al to react

Then, our 6.7 moles of gas might react to (6.7 . 2 ) /3 = 4.47 moles of Al

We have 5 moles of Al and we need 4.47 moles, so this is the excess reactant. In conclussion, Cl₂ is the limiting.

2 moles of Al react to 3 moles of gas

Our 5 moles of Al may react to (5 . 3 )/2 = 7.5 moles of gas

It's ok because we only have 6.7 moles, and there is not enough gas.

Now we calculate the product's mass

3 moles of gas can produce 2 moles of salt

Then, our 6.7 moles of gas will produce (6.7 . 2) /3 = 4.47 moles

We convert moles to mass: 4.47 mol . 133.33 g/mol = 596 g of AlCl₃

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2 years ago

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strojnjashka [21]

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2 years ago

Explain why the ionization energy to remove a second electron from potassium is higher than the ionization energy to remove four

never [62]

Explanation:

It is more difficult to remove electrons from the second shell or energy level because of the imbalance between the positive nuclear charge and the remaining electrons.

The amount of energy required to remove electrons in ground state of an atom is the ionization energy.
The first ionization energy is the energy needed to remove the most loosely bound electron of an atom in the gas phase in ground state.
The second energy has a greater nuclear pull as it is closer to the nucleus.
Both potassium and silicon have the same number of energy levels.

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2 years ago

Which of the following is true about cells?

Allushta [10]

Answer:

Explanation:

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2 years ago

What mass of Al contains the same number of atoms as 33.5g of Au

wel

Stoich questions...

1) convert the grams of Au to moles
(33.5g)/(196.7g/mol)=___x___

2)find how many atoms are in that many moles by multiplying it by avogadro's number.

x(moles of Au)*(6.02*10^23)=?

3)now that you have found the number of atoms of gold, convert it to grams of aluminum by multiplying it by Avogadro's number and multiplying it by the atomic mass of aluminum.
( ? )(6.02*10^23)(26.98g/mol)= (mass of Al)

5 0

2 years ago