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ss7ja [257]
2 years ago
15

If the solubility of a gas is 8.4 g/L at 404 kPa pressure, what is the solubility of the gas when the pressure is 101 kPa? Pleas

e show work.
Chemistry
1 answer:
Vlada [557]2 years ago
6 0

Answer:

at P = 101 KPa ⇒ S = 2.1 g/L

Explanation:

Henry's law:

  • <em>C</em> = K*P

∴ K: Henry's constant

∴ <em>C</em> is the concentration ≡ Solubiluty (S)

∴ S = (8.4 g/L)*(Kg/1000 g)*(1000 L/m³) = 8.4 Kg/m³

∴ P = (404 KPa)*(1000 Pa/KPa) = 404000 Pa

∴ Pa = Kg/ms²

⇒ S = K(404000 Pa) = 8.4 Kg/m³

⇒ K = 2.079 E-5 s²/m².......the henry's constant for this gas

at P = 101 KPa = 101000 Pa

⇒ S = (2.079 E-5 s²/m²)*(101000 Kg/ms²)

⇒ S = 2.1 Kg/m³ = 2.1 g/L

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The correct answer is letter D. A knife would most likely cause this blood spatter pattern because of the direction of the force that was inhibited on the weapon and the victim. The direction of the spatter will also depend on the body part that was hit by the weapon.
6 0
3 years ago
The skeletal structure in line‑angle (line‑bond) mode of 2‑isopropyltoluene is shown. Identify the number of hydrogen atoms boun
Shalnov [3]

Answer:

Fourteen hydrogen atoms are bounded in total to the carbon atoms in the structure

Explanation:

The boxes that show "one" indicate that there is only one hydrogen atom bonded to that particular carbon atom while those that show "zero" shows there are no hydrogen atoms bonded to that particular carbon atom. Those that show "three" indicate that there are three hydrogen atoms bonded to that particular carbon.

There are 10 carbon atoms in the structure.

NOTE that each of these carbon atoms must be surrounded with four bonds; which was how the number of hydrogen atoms (numbers in the boxes) weree determined.

4 0
2 years ago
How many number of moles are present in 200. g of sodium bicarbonate (NaHCO3)
nikdorinn [45]

You can solve this problem through dimensional analysis.

First, find the molar mass of NaHCO3.

Na = 22.99 g

H = 1.008 g

C = 12.01 g

O (3) = 16 (3) g

Now, add them all together, you end with with the molar mass of NaHCO3.

22.99 + 1.008 + 12.01 + 16(3) = 84.008 g NaHCO3. This number means that for every mole of NaHCO3, there is 84.008 g NaHCO3. In simpler terms, 1 mole NaHCO3 = 84.008 g NaHCO3.

After finding the molar mass of sodium bicarbonate, now you can use dimensional analysis to solve for the number of moles present in 200. g of sodium bicarbonate.

200. g NaHCO_3 * \frac{1 mole NaHCO_3}{84.008 g NaHCO_3}

Cross out the repeating units which are g NaHCO3, and the remaining unit is mole NaHCO3

200.  * 1 = 200

200/ 84.008 = 2.38

Notice how there are only 3 sig figs in the answer. This is because the given problem only gave three sig figs.

Your final answer is 2.38 mol NaHCO3.

8 0
2 years ago
Help here are the choices
Murljashka [212]
PH Answer/definition - A value from 0 to 14 that is used to specify how acidic or basically a compound of when it is dissolved in water.

Ions Answer/definition - An atom or molecule that has a positive of negative charge.

Acid Answer/definition - A compound that increases the hydroxide ions (OH-) when it is dissolved in a solution. (Arrhenius Acid)

Base Answer/definition - A compound that increases hydrogen ions (H+) when it is dissolved in a solution.


Hope this helps you out :)))
5 0
3 years ago
Read 2 more answers
Give the chemical symbol or name for each of the following elements, as appropriate: (a) carbon, (b) nitrogen, (c) titanium, (d)
Elanso [62]

The correct answers are ,

A) C

B) N

C) Ti

D) Zn

E) Fe

F) Phosphorus

G)Calcium

H) Helium

I) Lead

J) Silver

<h3>How are elements named?</h3>

Elements have been given names based on a variety of factors, <u>including their characteristics</u>, the compound or ore from which they were extracted, the method by which they were found or acquired, mythical characters, locations, and well-known individuals. Some components have <u>names that are descriptive and are based on one of their attributes.</u>

The International Union of Pure and Applied Chemistry chooses the official element names and symbols (IUPAC). However, different nations frequently use similar names and symbols for elements. Official names and symbols for elements are not given until after their discovery has been confirmed. The discoverer may then suggest a name and a symbol.

There are name standards for several element groupings. Names of halogens end in -ine. All noble gas names, save helium, end in -on. The names of most other elements finish with -ium.

To learn more about elements:

brainly.com/question/14347616

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6 0
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