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san4es73 [151]
3 years ago
12

Please help me !!! im failing :(

Chemistry
1 answer:
wlad13 [49]3 years ago
6 0

Answer:       H

               H- C- H

                    H

Explanation:

Lewis structures are the structures which represent the valence electrons of the element around the chemical symbol of the element.

Carbon is an element which belong to group 14. Atomic number of carbon is 6 that means it contains 6 electrons, Thus the electronic configuration is represented as: 1s^22s^22p^2 . Thus the valence electrons are 4.

Hydrogen is an element which belong to group 1. Atomic number of hydrogen is 1 that means it contains 1 electron, Thus the electronic configuration is represented as: 1s^1 . Thus the valence electron are 1.

The four valence electrons of carbon are shared with one valence electron of hydrogen each.

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i think the answer is B. They have low reactivity.Hope this helped (:

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2 years ago
Calculate the volumeof 1.0M NaOH necessary to completely neutralize 100mL of 0.50M of phosphoric acid (H3PO4)?
blondinia [14]

Answer:

50 mL

Explanation:

In case of titration , the following formula is used -

M₁V₁ = M₂V₂

where ,

M₁ = concentration of acid ,

V₁ = volume of acid ,

M₂ = concentration of base,

V₂ = volume of base .

from , the question ,

M₁ =  0.50M

V₁ = 100 mL

M₂ =  1.0M

V₂ = ?

Using the above formula , the volume of base , can be calculated as ,

M₁V₁ = M₂V₂

substituting the respective values ,

0.50M * 100 mL =  1.0M * V₂  

V₂  = 50 mL

3 0
3 years ago
A hiker has packed a bag of chips as a snack. At the start of the hike the pressure was 1.5 atm and the temperature was 35*C. At
Mazyrski [523]
According to <span>Gay-Lussac's Law the temperature and Pressure are directly proportional to each other if the amount and volume of given gas are kept constant.
Mathematically for initial and final states it is expressed as,

                                          P</span>₁ / T₁  =  P₂ / T₂     ----- (1)
Data Given;
                  P₁  =  1.5 atm

                  T₁  =  35 °C + 273  =  308 K

                  P₂  =  ?

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Solving Eq. 1 for P₂,

                                   P₂  =  P₁ T₂ / T₁

Putting values,
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                                   P₂  =  1.32 atm
Result:
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5 0
3 years ago
Draw the ground-state electronic configuration for Mg.
vichka [17]

Answer:

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Explanation:

6 0
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