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3 years ago

According to its periodic table entry, how many electrons does nitrogen have in its valence level?

Chemistry

2 answers:

MakcuM [25]3 years ago

8 0

Answer:

Nitrogen has 5 valence electrons

Explanation:

Nitrogen is a nonmetal found in group 15 of the periodic table.

For the elements that correspond to this group the configuration of their valence electrons is $ns^2 np^3$ where n corresponds to the period where it is located.

We have two electrons in orbital s and 3 in orbital p.

The sum of these electrons is the total valence electrons of nitrogen

$2+3= 5$

Nitrogen has 5 valence electrons

egoroff_w [7]3 years ago

3 0

Nitrogen has 5 electrons in its valence level

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4 years ago

Type the correct answer in each box.

Arturiano [62]

Answer:

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Explanation:

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3 years ago

A 48.0g sample of quartz, which has a specific heat capacity of 0.730·J·g−1°C−1, is dropped into an insulated container containi

Butoxors [25]

Answer:

The equilibrium temperature of the water is 26.7 °C

Explanation:

Step 1: Data given

Mass of the sample quartz = 48.0 grams

Specific heat capacity of the sample = 0.730 J/g°C

Initial temperature of the sample = 88.6°C

Mass of the water = 300.0 grams

Initial temperature = 25.0°C

Specific heat capacity of water = 4.184 J/g°C

Step 2: Calculate final temperature

Qlost = -Qgained

Qquartz = - Qwater

Q =m*c*ΔT

Q = m(quartz)*c(quartz)*ΔT(quartz) = -m(water) * c(water) * ΔT(water)

⇒ mass of the quartz = 48.0 grams

⇒ c(quartz) = the specific heat capacity of quartz = 0.730 J/g°C

⇒ ΔT(quartz) = The change of temperature of the sample = T2 -88.6 °C

⇒ mass of water = 300.0 grams

⇒c(water) = the specific heat capacity of water = 4.184 J/g°C

⇒ ΔT= (water) = the change in temperature of water = T2 - 25.0°C

48.0 * 0.730 * (T2-88.6) -300.0 * 4.184 *(T2 - 25.0)

35.04(T2-88.6) = -1255.2 (T2-25)

35.04T2 -3104.544 = -1255.2T2 + 31380

1290.24T2 = 34484.544

T2 = 26.7 °C

The equilibrium temperature of the water is 26.7 °C

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