Question

1.Potassium-40 decays by three pathways: β decay, positron emission, and electron capture.

Write a balanced equation for the positron emission process.

2.The concentration of NaCl in red blood cells is approximately 598.00 ppm. For a NaCl solution, assume the solution completely dissociates giving a van ’t Hoff factor of 2. Calculate the osmotic pressure of this solution at body temperature (37°C).

_atm

Answer 1

Solo L 1.kh - A B ( Punitron decay) 15k to → Cat B ( Beh decay) Concentration of Wall (c) 599 kom Ipohm ovol g So, 5586pm - 0.101x588 9/2 = 0.559 g/L moles of Nall = 0.588 - 0010222 moles. SS Hence, C= 0.010222 mol/L X - iXcxRxT = 9 x 0.010222 * O *0821X (273+37) = 0.5a atm Osmotic pressure (A) = 0.52. mass Mola Mens