Write 2 paragraphs on how perfluorocarbon affects scuba divers and their bloodstream.

1 answer:

6 0

Not sure (this might to be helpful)
tip: do some research and make it yourself or
tip 2: find 2 paragraphs and change the words (cheating) although don’t really recommend it but there are websites that change the wording for you

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What is the density of ammonia gas, nh3, at 31°c and 751 mmhg?

solmaris [256]

First, we will use the general gas formula to get the number of moles.
PV = nRT where:
P is the pressure of gas = 751 mmHg = 100125.096375 Pascal
V is the volume = 1 liter = 0.001 m^3
n is the number of moles we want to calculate
R is the gas constant = <span>8.314 J/(K. </span>mol<span>)
T is the temperature = 31 degrees celcius = </span>304.15 degree kelvin

Substitute in the above equation to get the number of moles as follows:
100125.096375 * 0.001 = n * 8.314 * 304.15
n = 0.039595 moles

Now, we will use the number of moles to get the mass as follows:
number of moles = mass / molar mass
mass = number of moles * molar mass
number of moles = 0.039595 moles
molar mass of ammonia (NH3) = 14 + 3(1) = 17 grams
Substitute to get the mass as follows:
mass = 0.039595 * 17 = 0.673122 grams

Last step is to get the density as follows:
density = mass / volume
mass = 0.673122 grams
volume = 1 liter
density = 0.673122 / 1 = 0.673122 grams/liter = <span>0.000675 kg/L</span>

8 0

3 years ago

(b) What is the pKa of the dimethylammonium ion, (CH₃)₂NH₂⁺ ?

g100num [7]

The pKa of the dimethylammonium ion, (CH₃)₂NH₂⁺ is 10.7.

<h3>What do we know about dimethylammonium ion?</h3>

The conjugate acid of dimethylamine, dimethylaminium is an organic cation and a significant species at pH 7.3. It is a secondary aliphatic ammonium ion and an organic cation. It is a dimethylamine conjugate acid.

<h3>What do we understand by pKa?</h3>

In layman's terms, pKa is a measurement of an acid's strength. A strong acid will have a pKa value that is lower than 0. To be more specific, pKa is the Ka value's negative log base ten value (acid dissociation constant). How tightly a proton is retained by a Bronsted acid is how the strength of an acid is measured. The strength of the acid and its capacity to donate protons increase with decreasing pKa values.