Tim has just jumped out of an airplane.The force of gravity pulls him downward,while air resistance pushes him upward

What is the pOH of a 0.0010 M solution of calcium hydroxide (Ca(OH)2)

inysia [295]

Answer: The pOH is: " 2.40 " .

__________________________________________________________

The pOH value of a 0.0010 M solution of calcium hydroxide;

Ca(OH)₂ ; is:

__________________________________________________________

" 2.40 " .

__________________________________________________________

Explanation:

___________________________________________________________

Calculate the pOH of a 0.0010 M solution of Ca(OH)₂ .

Note that:

"M" represents the concentration in "Molarity" ;

(that is; "moles of solute per Liter of solution" ; or, "mol / L " } ;

and that for our purposes, anything notes in "brackets" refers to "concentration"; in "M" {"Molarity" ; as explained above.}.

Note that "calcium hydroxide", that is; " Ca(OH)₂ " ;

→ dissociates into the following ions, as follows:

→ Ca(OH)₂ → Ca²⁺ + 2 OH⁻ ;

Therefore, the [OH⁻] equals: {2 * 0.0010} M = 0.0040 M .

For every Ca(OH)₂ you produce 2 OH⁻ .

<u>Note</u>: pOH = - log [OH⁻] ;

pOH = - log ( 0.0040) = 2.3979400086720375 ;

→ round to: " 2.40 " .

__________________________________________________________

Answer: The pOH is: " 2.40 " .

__________________________________________________________

The pOH value of a 0.0010 M solution of calcium hydroxide; Ca(OH)₂ ; is:

" 2.40 " .

__________________________________________________________

7 0

3 years ago

Explain how both analytical and creative problem-solving strategies can be applied to the following scenario. Jeff notices that

Over [174]

Answer: They can be apllied to the senario he can pettition or he can use bigger bags those are just a couple of ideas.

4 0

3 years ago

A feedback mechanism that increases respiration rate to exhale more co2 would be:_________

Arisa [49]

As your body needs more oxygen during exercising and produces more carbon dioxide, this might result in a high respiratory rate.

During exercise, your breathing may occur 3–4 times more frequently. Hyperpnea, or rapid, deep breathing, is the body's natural response to increased carbon dioxide generation. The pace of breathing increases along with the blood's concentration of carbon dioxide. The pH of the blood changes dramatically as carbon dioxide levels rise. The chemoreceptors in the medulla oblongata, a part of the hindbrain that controls respiration, detect this shift. To expel the additional carbon dioxide and breathe in more oxygen, the respiratory center speeds up breathing.

Learn more about carbon dioxide here:

brainly.com/question/1923482

#SPJ4

3 0

2 years ago

If it takes three "breaths" to blow up a balloon to 1.2 LL, and each breath supplies the balloon with 0.060 moles of exhaled air

lara31 [8.8K]

Answer:

0.45 moles of air are in a 3.0 L balloon

Explanation:

The given problem can be solved by using unitary method.

Firstly, we have to find out how many breaths are equivalent to 3.0 L. Secondly, we have to find out how many moles of air are supplied corresponding to the calculated number of breaths.

1.2 L = 3 breaths

So, 3.0 L = $\frac{3}{1.2}\times 3.0$ breaths = 7.5 breaths

1 breath supplies 0.060 moles of air

So, 7.5 breaths supplies $(7.5\times 0.060)$ moles of air or 0.45 moles of air.

Hence, 0.45 moles of air are in a 3.0 L balloon.

4 0

3 years ago

Write the formula of Li+ formed byOH−, NO2−, HCO3−, SO32−, HPO42−

Artemon [7]

LiOH, LiNO₂, LiHCO₃, Li₂SO₃, Li₂HPO₄

7 0

3 years ago