Citric acid, h3c6h5o7, occurs in plants. lemons contain 5% to 8% citric acid by mass. the acid is added to beverages and candy. an aqueous solution is 0.688 m citric acid. the density is 1.049 g/ml. what is the molar concentration? .

Explanation:

For this question, we have to assume that we have 1 L of solvent. With the molality equation we can calculate the moles of solute, so:

Then we can calculate the grams of solute using the molar mass :

molar mass of =192.12 g/mol

The density for water is 1 Kg/L, therefore 1 L of water equal to 1 Kg, the total mass of the solution would be:

1000 g + 132.17 g = 1132.17 g

With this value we can calculate the volume of the solution using the density, so:

Finally, we can calculate the molarity diving the moles by the volume, so:

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

c (diamond),

sio2 (quartz)