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2 years ago

Which functional group contains oxygen atom?

Chemistry

2 answers:

hram777 [196]2 years ago

8 0

Carbonyl group contains oxygen atom.

lidiya [134]2 years ago

6 0

The functional group contains oxygen atom carbonyl group. The answer is letter A. The formula structure is R-C-R’=O. The oxygen in the C = O has two lone pairs which makes its more electronegative thant carbon. The larger the carbonyl compound is, the less soluble it becomes in water.

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The sum of the atomic mass values of the atoms in a chemical formula is known as ____________.

nydimaria [60]

Answer:

I believe this is called the 'molar mass'

5 0

2 years ago

In the alpha decay of Francium-221, what daughter element is produced?

aleksley [76]

<span>Astatine-217 is the daughter element produced by the alpha decay of Francium-221.</span>

8 0

2 years ago

Read 2 more answers

How many moles is in 2.52*10^24 molecules of water?

nataly862011 [7]

Hi friend
--------------
Your answer
-------------------

Water = H2O

Number of molecules in one mole of water = 6.022 × 10²³ [Avogadro's constant]

Given number of molecules = 2.52 × 10²³

So,
------

Number of moles =
$\frac{2.52 \times 10 {}^{24} }{6.022 \times 10 {}^{23} } \\ \\ = 4.184 \: (approximately)$

HOPE IT HELPS

3 0

2 years ago

What is the molecular formula of the compound CH2 with molar mass = 168 g/mol?

Yakvenalex [24]

Answer:

first let's find the molar mass of CH2.Molar mass CH2=12.0+(2multiply1.01)=14.02g/mol

Explanation:

4 0

3 years ago

Determine the energy associated with an e- in hydrogen at n=2 to n=4

jeka57 [31]

Answer:

Kinetic energy of electron = -E₂ = 3.4 ev

Kinetic energy of electron = -E₄ = 0.85 ev

Explanation:

In case of hydrogen atom energy associated with nth state is,

En = -13.6/n²

For n = 2

E₂ = -13.6 / 2²

E₂ = -13.6/4

E₂ = -3.4 ev

Kinetic energy of electron = -E₂ = 3.4 ev

For n = 4

E₄ = -13.6 / 4²

E₄ = -13.6/16

E₄ = -0.85 ev

Kinetic energy of electron = -E₄ = 0.85 ev

6 0

2 years ago