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suter [353]
3 years ago
13

Describe the shapes and relative energies of the s, p, d, and f atomic orbitals. (3 points) Be sure you address both the shapes

of each atomic orbital and the relative energy for each orbital. Be sure to use ACE format to answer this question. This type of problem came from unit 3.
Chemistry
1 answer:
Makovka662 [10]3 years ago
6 0

Answer:

According to the subshells, the  ns subshell has a sphere-like shape, and on average, lower energy than the rest of the subshells on the same quantum level  

The np subshell has two lobes opposite the origin, and on average has more energy than a ns subshell since it has one more angular node, and thus  np electrons are less core-like (and further away from the nucleus).

n d orbitals have five spatial orientations:

and n f orbitals have seven spatial orientations

The energies are on average in increasing order for the same energy level , n as follows,

nS < nP < nD < nF

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dsp73

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Which of the following is an example of organic matter salt water or air​
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Answer:

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Explanation:

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3 years ago
When 1.045 g of CaO is added to 50.0 mL of water at 25.0 °C in a calorimeter, the temperature of the water increases to 32.3 °C.
Rus_ich [418]

Answer:

1.71 kJ/mol

Explanation:

The expression for the calculation of the enthalpy change of a process is shown below as:-

\Delta H=m\times C\times \Delta T

Where,  

\Delta H  is the enthalpy change

m is the mass

C is the specific heat capacity

\Delta T  is the temperature change

Thus, given that:-

Mass of CaO = 1.045 g

Specific heat = 4.18 J/g°C

\Delta T=32.3-25.0\ ^0C=7.3\ ^0C

So,  

\Delta H=1.045\times 4.18\times 7.3\ J=31.88713\ J

Also, 1 J = 0.001 kJ

So,  

\Delta H=0.03189\ kJ

Also, Molar mass of CaO = 56.0774 g/mol

Moles=\frac{Mass}{Molar\ mass}=\frac{1.045}{56.0774}\ mol=0.01863\ mol

Thus, Enthalpy change in kJ/mol is:-

\Delta H=\frac{0.03189}{0.01863}\ kJ/mol=1.71\ kJ/mol

8 0
3 years ago
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