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3 years ago

How many orbitals are available in a “d” orbital configuration?

Chemistry

1 answer:

ratelena [41]3 years ago

8 0

Answer:

e.)5

Explanation:

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One of the essential minerals in the human body is salt. How much salt (NaCl) is in the average adult human body?

nlexa [21]

No! If it was 12% a 150 pound person would be about 18 pounds of salt!

~0.4%
The average 150lb person would contain ~280 g of NaCl.

6 0

3 years ago

How many electrons can occupy an atom's 2nd energy level (shell)?

beks73 [17]

Answer:

eight

Explanation:

Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on.

3 0

3 years ago

The following drawing is a representation of a reaction of the type A → B, where different shaded spheres represent different mo

Alex73 [517]

Answer: The given reaction is non-spontaneous at low temperatures and spontaneous at high temperatures.

Explanation:

We know that relation between free energy and enthalpy is as follows.

$\Delta G = \Delta H - T\Delta S$

As in the given drawing, solid is converting into gas. This means that there is occurring an increase in entropy of the system. This also means that the enthalpy change will also be positive.

Free energy change is negative (spontaneous) at high temperature and free energy change is positive at low temperature.

Hence, we can conclude that the given reaction is non-spontaneous at low temperatures and spontaneous at high temperatures.

4 0

3 years ago

Extra Stoichiometry Practice

Irina-Kira [14]

Answer: 50. 4g

Explanation:

First calculate number of moles of aluminium in 38.8g

Moles = 38.8g/ 26.982mol/g

= 1.44mol

By looking at the balance equation you can see that 4 moles of aluminium produce 2 moles of aluminium oxide.

4 = 2

1.4 = x

Find the value of x

x= (1.4×2)/4= 0.72 mol

0.72 moles of aluminium oxide are produced from 38.8g of aluminium

Now find the mass of aluminium produced.

Mass = moles × molar mass

= 0.72mol × 69.93 mol/g

= 50.4g

8 0

3 years ago

The molar mass of magnesium (Mg) is 24.30 g/mol. There are 6.02 x 10^23 atoms in 1 mol. How many atoms are present in 48.60 g of

docker41 [41]

Atoms of Mg = mol * L

mol of Mg = $\frac{MASS}{MOLAR MASS}$

= $\frac{48.60 g}{24.30 g / mol}$

= 2 mol

∴ atoms of Mg = 2 mol * ( 6.02 x 10²³)
= 1.204 x 10²⁴

6 0

4 years ago