Calculation of Molarity I Calculation of Molarity II Concentration of Ions I Giv

Question

Calculation of Molarity I Calculation of Molarity II Concentration of Ions I Give the calculation of each type of ions in the following solution 0.30 M Ca(NO_2)_3 1 M Concentration and Volume What volume of 16 M sulfur acid ions be used to prepare 1.3 L of a 0.10 M H_2SO_4 solutions? Concentration and Volume Typical blood serum is about 0.14 M NaCl. What volume of blood contains 1.0 mg NaCl? 60 mL of a solution is diluted to a volume of 278 mL. A 139 mL portion of that solution is diluted using 139 mL of water. What is the final concentration? Given a 0.75 M solution of AgNO_3(aq), what is the mass of Ag+ in a 175 ml sample of that solution? MW of Ag = 107.86 g/mole, MW of N = 14 g/mole, MW of O = 15.99 g/mole Extra Credit Derive the ideal gas law, PV = nRT, from Molar Mass = (dRT/P) P = nRT/V n = m/M P = nRT/VM P = dRT/M MP = dRT M = dRT/P

Explanation / Answer

from molar mass = dRT/P , where M = molar mass, d= deensity, R is constant and T is temerature.

M = d R T / P

and we know that density (d) = mass(m) / volume(V)

therefore

M = m R T / PV

and

PV = (m/M) RT

where m/M is the number of moles (n)

therefore we have

PV = nRT

THIS IS IDEAL GAS EQUATION.

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