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BARSIC [14]
2 years ago
15

High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to

Chemistry
1 answer:
Alchen [17]2 years ago
6 0

Answer:

2,400,000 torr (3 s.f.)

Explanation:

Convert the pressure from Pascal to atm first:

\boxed{1 \: atm = 101325 \:Pa }

3.20 ×10⁸ Pa

= [(3.20 ×10⁸) ÷101325] atm

= 3158.2 atm (5 s.f.)

Convert atm to torr:

\boxed{1 \: atm = 760 \: torr}

3158.2 atm

= (3158.2 ×760) torr

= 2400000 torr (3 s.f.)

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A certain substance, X, has a triple-point temperature of 20°C at a pressure of 2.0 atm.
nikitadnepr [17]

Answer: The statement which could possibly not be true is C -" Liquid X can exist as a stable phase at 25°C, 1atm."

Explanation:

Triple point is the point where a substance co-exist as solid liquid and gas. At any point other than the triple point, the substance exist as a single phase substance.

As shown in the diagram, Liquid cannot exist as a stable phase at 1atm( below the the triple point pressure of 2atm) as the liquid can only exist beyond the pressure of triple point.

3 0
3 years ago
Find the number of moles of argon in 452 g of argon
bixtya [17]
No. of moles = given mass/atomic mass

= 452/40

= 11.3.

Thus, there are 11.3 moles
7 0
3 years ago
Read 2 more answers
2. What is the difference between potential and kinetic energy?​
lora16 [44]

Answer: Potential Energy is the stored energy in an object.and kinetic energy is energy in motion

Explanation:

4 0
3 years ago
A volume of 2000 mL can be expressed as
NeX [460]

Answer:

These are three different forms of expressing a volume of 2000 ml:

  • 2 liter

  • 2. × 10³ ml

  • 2. × 10⁰ liter

Explanation:

The expression 2000 ml means 2000 mililiters and convey three important informations:

  • The unit, which is mililiter (1 ml = 1 / 1,000 liter)

  • The magnitude, which is 2000

  • The precision: the zeros to the right of the figure 2 are not significative, so this magnitue is precise only to the thousands units. This means, that the measure could be between 1500 and 2499 (ml).

You might express the same volume with a different unit, e.g. liter, and in a different way (using scientific notation).

<u>1) Changing the unit.</u>

To change ml to liter you must multiply for the conversion factor:

  • 1 = 1 liter / 1,000 ml

Thus, 2000 ml is equal to:

  • 2000 ml × 1 liter / 1,000 ml = 2 liter

<u>2) Using scientific notation:</u>

You change the number to a power of ten, using a decimal greater than or equal to 1 and less than 10.

For 2000 the decimal is 2. and the power of ten is 3 (for the three zeros after the 2):

  • 2000 ml = 2. × 10³ ml

  • 2. × 10⁰ liter
4 0
3 years ago
What is the molarity of a solution that is made by dissolving 100.0 grams of lithium hydroxide in 750.0 mL of water?
vredina [299]

Answer:

The answer to your question is: 5.6 M

Explanation:

Data

Molarity = ?

mass of LiOH = 100 g

final volume = 750 ml

MW LiOH = 7 + 16 + 1 = 24 g

Formula

Molarity = moles / volume

Process

                            24 g ------------------ 1 mol

                          100 g ------------------   x

                              x = (100 x 1) / 24

                              x = 4.2 moles of LiOH

Molarity = 4.2 / 0.750

Molarity = 5.6 M

3 0
2 years ago
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