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Nadusha1986 [10]
4 years ago
14

Which element is the most reactive? sodium, nickel, carbon, or oxygen

Chemistry
2 answers:
weeeeeb [17]4 years ago
7 0
Sodium will be the most reactive as it is a metal lying in the first period and has a valence electron that is readily lost.
nikitadnepr [17]4 years ago
5 0

Answer : Option A) Sodium

Explanation : Sodium is the element which is most reactive tin the given options.

Sodium has the atomic number as 11, which is distributed in the atomic shells as 2-8-1.

So, it is clear that the outermost valence shell contains only one electron in sodium. To give away one electron and attain the octet state is easy for sodium. If it donates the electron it becomes a cation which is very reactive, as it gets a positive charge on itself.

Compared to the valency of the other atoms given here, Nickel has 2 valence electrons so it will be less reactive than Sodium.

Carbon has 4 valence electrons which is less than sodium and oxygen needs 2 electrons to be an octet which is also less.

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What information is needed to determine the amount of moles in 1.6g of HCL?
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Answer:

Molar mass and Mass

Explanation:

The relationship between mass and number of moles is given as;

Number of moles = Mass / Molar mass

Mass = 1.6 g

Molar mass of HCl = ( 1 + 35.5 ) = 36.5 g/mol

Number of moles = 1.6 g / 36.5 g/mol

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3 years ago
When two amino acids condense to form a dipeptide, what is the other product of the reaction? enter the molecular formula?
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4 years ago
Does oxygen react with water?
Dmitrij [34]

Answer:

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7 0
3 years ago
A compound is 12.7% Al, 19.7% N, and 67.6% O. Determine its emperical formula.
gizmo_the_mogwai [7]

Answer:

AlN₃O₉

Explanation:

Assume that you have 100 g of the compound.

Then you have 12.7 g Al, 19.7 g N, and 67.6 g O.

1. Calculate the <em>moles</em> of each atom

Moles of Al = 12.7 × 1/26.98 = 0.4707 mol Al

Moles of N = 19.7 × 1/14.01    =  1.406   mol N

Moles of O = 67.6 × 1/16.00  = 4.225   mol O

2. Calculate the <em>molar ratios</em>.

Al: 0.4707/0.4707 = 1

N: 1.406/0.4707    = 2.987

O: 4.225/0.4707   = 8.976

3. Determine the <em>empirical formula</em>

Round off all numbers to the closest integer.

Al: 1

N: 3

O: 9

The empirical formula is AlN₃O₉.

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4 years ago
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3 years ago
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