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zaharov [31]
2 years ago
13

High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to purify chemical substances. The pre

ssure used in this procedure range from around 500 kilopascals (500,000 Pa) to about 60,000 kPa (60,000,000 Pa). It is often convenient to know the pressure in torr. If an HPLC procedure is running at a pressure of 5.17x10^8 Pa, what is it’s running pressure in torr?
Chemistry
1 answer:
Salsk061 [2.6K]2 years ago
3 0
Here this should be the answer for this lol

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It is safe to stand on the top step of a ladder provided it is braced properly. A) True B) False
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FALSE You are never allowed to stand on the top of the ladder even if all legs are on the ground

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3 years ago
Endergonic reactions:
guapka [62]

Answer : The correct option is, (b) occur when there is more free energy in the reactants than the products.

Explanation :

Endergonic reactions : It i defined as the reaction in which the energy is absorbed during the reaction.

In endergonic reactions, the Gibbs free energy of product is lower than the reactants. That means, ΔG > 0 and the reaction is non-spontaneous.

Exergonic reactions : It i defined as the reaction in which the energy is released during the reaction.

In exergonic reactions, the Gibbs free energy of product is greater than the reactants. That means, ΔG < 0 and the reaction is spontaneous.

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6 0
3 years ago
Suppose 17. g of hydrochloric cid is mixed with 6.99 g of sodium hydroxide calculate the minimum mass of hydochloric acid taht c
Eva8 [605]

Answer: 10.62g

Explanation:

First let us generate a balanced equation for the reaction.

HCl + NaOH —> NaCl + H2O

Molar Mass of HCl= 1 + 35.5 = 36.5g/mol

Molar Mass of NaOH = 23 + 16 + 1 = 40g/mol

From the question,

Mass of HCl = 17g

Mass of NaOH = 6.99g

Converting these Masses to mole, we obtain:

n = Mass / Molar Mass

n of HCl = 17/36.5 = 0.4658mol

n of NaOH = 6.99/40 = 0.1748mol

From the question,

1 mole of NaOH requires 1mole of HCl.

Therefore, 0.1748mol of NaOH will also require 0.1748mol of HCl.

But we were told that 17g( i.e 0.4658mol) of HCl were mixed.

Therefore, the unreacted amount of HCl = 0.4658 — 0.1748 = 0.291mol

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Mass of HCl = n x molar Mass

Mass of HCl = 0.291 x 36.5

Mass of HCl = 10.62g

Therefore the left over Mass of HCl is 10.62g

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I would say A or C because the other 2 are decided before a baby leaves the womb

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I would suggest convection !!!
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