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IgorLugansk [536]
3 years ago
7

Ways hydrogen can attain stability

Chemistry
1 answer:
NeTakaya3 years ago
7 0
Hydrogen only has one electron in its lowest energy level. This is a very unstable arrangement, and hydrogen gas undergoes a variety of reactions so as to reach a stable electron configuration where its energy level is either empty of electrons, or filled with electrons.
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Which grouping of circles, when considered in order from the top to the bottom, best represents the relative size of the atoms o
Nimfa-mama [501]

Answer:

answers number 1

Explanation:

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3 years ago
Ex1. how many moles correspond to 250 g of each of the following compounds?
Ivahew [28]

Answer:

Ex1 = 4.3 moles

Explanation:

for Ex 1

 ** Number of mole = Mass (g) / Molecular weight ' Mw'  (g/mole)

for a = NaCl , first you must be calculate Mw = look to periodic table

Atomic weight for Na is 22.9 = 23 g and for Cl is 35.45 = 35 g

so Mw for NaCl = 23+35 = 58 g/mole

so Number of Moles for NaCl 250 g is

Number of Moles = 250 / 58 = 4.3 moles

do same for others ...

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As the ionic compound decreases in size, the melting point __
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Answer:

A. increase

Explanation:

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What occurs when the moon blocks the view of the Sun?
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It would be a solar eclipse
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C2 H6 +02 equals CO2 + H2O what mass of water is produced from three moles of C2 H6?
yulyashka [42]

Answer:

162g

Explanation:

We'll begin by writing the balanced equation for the reaction. This is given below:

2C2H6 + 7O2 —> 4CO2 + 6H2O

Next, we shall determine the number of mole of water, H2O produced by the reaction of 3 moles of C2H6.

This can be obtained as follow:

From the balanced equation above,

2 moles of C2H6 reacted to produce 6 moles of H2O.

Therefore, 3 moles of C2H6 will react to produce = (3 x 6)/2 = 9 moles of H2O.

Therefore, 9 moles of H2O is produced from the reaction.

Finally, we shall convert 9 moles of H2O to grams.

This can be done as shown below:

Molar mass of H2O = (2x1) + 16 = 18g/mol

Mole of H2O = 9 moles

Mass of H2O =..?

Mole = mass / molar mass

9 = mass of H2O /18

Cross multiply

Mass of H2O = 9 x 18

Mass of H2O = 162g

Therefore, 162g of H2O were produced from 3 moles of C2H6.

8 0
3 years ago
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