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ss7ja [257]
3 years ago
15

The element neon (Ne), which is used in signs, differs from both fluorine (F) and sodium (Na) by one proton each. Sodium, an alk

ali metal, and fluorine, a halogen, are both
extremely reactive. In contrast, neon, which is a noble gas, is highly unreactive. Use the
information contained on a periodic table to explain the difference in their chemical
properties.
Chemistry
1 answer:
olasank [31]3 years ago
3 0

Answer:

Explanation:

Atoms generally tend to achieve there octet configuration (i.e have there outermost shell completely filled) and become stable. They do this by participating in chemical bonding (majorly by transferring or sharing electrons). Atoms (of elements) that have very few electrons on there outermost shell (like the group 1 atoms; example is sodium) and atoms that have almost completely filled outermost shell (like the group 7 elements; example is fluorine) are highly reactive because it is easier to lose an electron to become stable and also easier to gain an electron to become stable. However, elements in group zero of the periodic table do not participate in bonding and resist chemical reactions because they have a completely filled outermost shell and are hence stable.

Since, the groups of the periodic table shows the number of electrons in the outermost shell of each member (of a particular group), the chemical properties of each group is usually almost similar.

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a solution contains 29.1g per litre of aluminium sulphate.calculate the number ofsulphate ions in 350cm^3 of the solution(Al=27,
JulijaS [17]

Answer:

it is 0.24 M

Explanation

Find the molarity of all ions in a solution that contains 0.165 moles of aluminum chloride in 820. ml solution. " Answer: [Al 3+1= 0.201 M. (CI) = 0.603M. ... 2) Find the molartiy  of each ion present after mixing 27 ml of 0.25 M HNO3 with 36 ml of ... of each ion and the mass of any precipitate when a 0.300 mole of aluminum.

8 0
3 years ago
What mass of phosphorus and of chlorine is needed to produce 87 g of pentachloride if the reaction yield is 60%?
Anna11 [10]

Hey there!

theoretical yield =  (87* 100 ) / 60 = 145 g of phosphorous pentachloride

the reaction for this process is :

molar mass P2O5 => 239.2125 g/mol

molar mass P4 => 123.90 g/mol

molar mass Cl2 => 70.9060 g/mol

P4 + 5 Cl2   -------------->  2 P2Cl5

moles of P2O5 :

145 g / 239.2125  => 0.6062 moles of P2O5

Therefore:

moles of P4 = 0.6062 mol / 2 =>  0.3031 moles

moles of Cl2 = 5/2 * 0.6062 mol  = 1.5154 moles

mass of P4 ( phosphours ) = 0.3031 mol * 123.90 => 37.554 grams

mass of Cl2 ( chlorine ) = 1.5154 mol  * 70.9060 => 107.45 grams


Hope That helps!


3 0
3 years ago
How do hydrogen fuel cells work​
Maksim231197 [3]
Fuel cells work by passing hydrogen through the anode of a fuel cell and oxygen through the cathode. On the anode site, hydrogen molecules are split into electrons and protons. They have a high efficiency therefore these fuel cells are also considered to be very clean plus a fuel cells only by-products are electricity, excess heat, and water.
4 0
4 years ago
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8 0
3 years ago
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Determine whether each chemical substance would remain the same color or turn pink in the presence of phenolphthalein.
Serhud [2]

Answer:

See the answer below

Explanation:

<em>The complete question can be seen in the attached image.</em>

<u>Phenolphthalein is an indicator that is often utilized in an acid-base reaction to indicate the endpoints of such reactions due to its ability to change color from pink/colorless to colorless/pink depending on if the final solution is acidic or basic.</u>

Phenolphthalein is usually colorless in acidic solutions and appears pink in basic solutions. The more basic or alkaline a solution is, the stronger the pink color of phenolphthalein. Hence;

1. Ammonia with a pH of 11 is basic, phenolphthalein will turn pink.

2. Battery acid with a pH of 1 is acidic, it will remain colorless.

3. Lime juice with a pH of 2 is acidic, it will remain colorless.

4. Mashed avocado with a pH of 6.5 is acidic, it will remain colorless.

5. Seawater with a pH of 8.5 is basic, it will turn pink.

6. Tap water with a pH of 7 is neutral, it will remain colorless

3 0
4 years ago
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