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liberstina [14]
4 years ago
8

Why do electrons enter the 4s orbital before entering the 3d orbital?

Chemistry
2 answers:
Nikitich [7]4 years ago
8 0
Because the outer orbits do not have as much energy or pull as the orbit closer to the inside.
Allisa [31]4 years ago
6 0
Because that is the outer ring.
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The number of neutrons in the nucleus of an atom can be calculated by
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3 mass number- proton number
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3 years ago
The "air bags" that are currently installed in automobiles to prevent injuries in the event of a crash are equipped with sodium
stellarik [79]

Answer:

0.0177 L of nitrogen will be produced

Explanation:

The decomposition reaction of sodium azide will be:

2NaN_{3}(s)--->2Na(s)+3N_{2}(g)

As per the balanced equation two moles of sodium azide will give three moles of nitrogen gas

The molecular weight of sodium azide = 65 g/mol

The mass of sodium azide used = 100 g

The moles of sodium azide used = \frac{mass}{molarmass}=\frac{100}{65}=1.54mol

so 1.54 moles of sodium azide will give = \frac{3X1.54}{2}=2.31mol

the volume will be calculated using ideal gas equation

PV=nRT

Where

P = Pressure = 1.00 atm

V = ?

n = moles = 2.31 mol

R = 0.0821 L atm / mol K

T = 25 °C = 298.15 K

Volume = \frac{P}{nRT}=\frac{1}{2.31X0.0821X298.15}=0.0177L

3 0
3 years ago
How many molecules in 4NH3
Snezhnost [94]

Answer:

16

Explanation:

4 nitrogen (N) atoms and 12 (3×4) atoms in Hydrogen (H)

Total = 4 + 12 = 16 molecules

8 0
3 years ago
How is particle motion related to thermal equilibrium?
Wewaii [24]

Answer:

With billions of moving particles colliding into each other, an area of high energy will slowly transfer across the material until thermal equilibrium is reached (the temperature is the same across the material).

8 0
3 years ago
Classical name for chromium(III) phosphate
prohojiy [21]
If by classical you mean formula name it is CrPO4<span>.</span>
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4 years ago
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