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Irina18 [472]
3 years ago
9

How does electronic configuration of atoms change in the period with increase in the atomic number?​

Chemistry
1 answer:
valentina_108 [34]3 years ago
6 0

Answer:

Hi

Explanation:

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Hope ur havin a good time

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How does carbon dioxide behave differently (its properties) as a gas compared with as a solid?
ankoles [38]
It is effected by diffusion (the power of smell and wind spread) but a solid is not.
4 0
3 years ago
How many liters of air must react with 2500 mL of hexane in order for combustion to occur completely. The percentage of oxygen i
bagirrra123 [75]

Answer:

118750 ml

Explanation:

The chemical equation for complete combustion of hexane is given as;

2C6H14 + 19O2 → 12CO2 + 14H2O  

From the equation of the reaction;

2 mol of C6H14 reacts with 19 mol of O2

2 ml of C6H14 reacts with 19 ml of O2

2500 mL of C6H14 would react with x ml of O2

2 = 19

2500 = x

x = 2500 * 19 / 2 = 23750 ml

Since oxygen is 20% of air;

23750 = 20 / 100 * (Volume of air)

Volume of air = 23750 * 100 / 20 = 118750 ml

7 0
3 years ago
What is the percent composition by mass for hydrogen in water (H2O)?
saw5 [17]

Explanation:

Percentage composition = 2/18 = 11.11%.

5 0
3 years ago
How are the atomic number and the number of protons related to each other?
SpyIntel [72]

Answer:

Neutral atoms of each element contain an equal number of protons and electrons. The number of protons determines an element's atomic number and is used to distinguish one element from another. ... Together, the number of protons and the number of neutrons determine an element's mass number.

Explanation:

5 0
3 years ago
If 56 grams of notrogen are used up by the reaction, how many grams of amonia will be produced? 1N2+3H2--> 2NH3
djverab [1.8K]
1 mole of N2 produces 2 moles of NH3
OR...
14 x 2 grams of N2 produces 2(14 +3) grams of NH3
1 gram of N2 produces 34/28 grams of NH3
therefore, 56 grams produce (34/28 )x 56 =68 grams of NH3 

the answer thus would be 68 grams of NH3
5 0
3 years ago
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