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TEA [102]
3 years ago
11

What is the correct noble gas configuration for Ba?

Chemistry
1 answer:
kvasek [131]3 years ago
8 0
I think the answer is [Xe] 6s2
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The Ksp can be used to find the concentration of hydroxide ions, and thus determine the pH given a concentration of of aluminum.
Anton [14]

Answer:

3.9.

Explanation:

(Molar mass of 342.15 g/mol).

The first thing to do in this question is to coverts our units. We are given 6.70 lb = 453.592 × 6.70 lb = 3039.0664 g of aluminum sulfate.

2050 gallons of water = 2050 × 3.785 = 7759.25 Litres.

After this we will now look for the Concentration aluminum sulfate using the formula below:

Concentration = number of moles ÷ volume. ------------------------------------(1).

Recall; Number of moles = 3039.0664/ 342.15 = 8.8823 moles. The volume = 2050 gallons = 7759.25 Litres.

Therefore, slotting in the values of of number of moles and volume into the equation (1) above, we have;

Concentration= 8.8823 moles/ 7759.25 Litres. = 0.001145 M.

The next equation we are going to make use of today is that of the solubilty product that is;

Ksp = (Al^3+) (OH^-)^3.

So, we have the ksp = 1.3 × 10^-33 and the value of (Al^3+)= 0.001145 M.

Hence, making (OH^-) the subject of the formula;

(OH^-) = ( 1.3 × 10^-33 / 0.001145)^1/3.

(OH^-) = 8 × 10^-11 M.

Hence, pOH = - log (OH^-)

pOH = - log (8 × 10^-11).

pOH = 10.1

Therefore, the values of pH is; 1

pH + pOH = 14.

pH = 14 - 10.1 = 3.9.

3 0
3 years ago
Choose the atom or ion that is larger.<br><br> Select one:<br> a. Br-1<br> b. Br
solniwko [45]

Answer:

Br^-1

Explanation:

It is an ion that gained an extra electron making it 36 electrons but the other. one is in the neutral state with 35 electrons

7 0
2 years ago
Paano mo mapapanatili na gumagana ang iyong negosyo sa gitna ng pandemic na ito?​
gogolik [260]

Tingnan ang pinakamahuhusay na kagawian at patnubay sa pampublikong kalusugan para mapanatiling ligtas ang iyong mga customer at tauhan.

HOPE IT HELPS:)

PLS FOLLOW:)

#BRAINLIEST

5 0
2 years ago
Read 2 more answers
20. Given the reaction at equilibrium:
Gemiola [76]
PV = nRT

If pressure increases, so will moles.

The answer is 2) Increase.

8 0
2 years ago
How do the ideas of electrolytes and IV fluids relate?
mel-nik [20]

Answer:

Electrolytes, particularly sodium, help the body maintain normal fluid levels in the fluid compartments because the amount of fluid a compartment contains depends on the amount (concentration) of electrolytes in it. If the electrolyte concentration is high, fluid moves into that compartment (a process called osmosis).

Explanation:

7 0
2 years ago
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