A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 25.00 μmol of the radionuclide. First, order the samples by decreasing initial radioactivity. Then calculate how long it will take for the amount of radionuclide in each sample to decrease to 1/32 of the initial amount. sample A B C symbol 170 69 145 62 241 95 51 radionuclide 25 Tm Sm Am Mn half-life 129. days 340.0 days 432.0 years 46.0 minutes initial radioactivity (choose one) ✓ (choose one) ✓ (choose one) ✓ (choose one) time for amount of radionuclide to decrease to 1/32 of initial amount days days years minutes

Please help me with this. THE CORRECT ANSWER IS 11.48

NaNO2 (aq) + HSO3NH2 (aq) ----> NaHSO4(aq) +N2(g) + H2O (l) Calculate Pc (mmHg), Vpaour pressure of water (mmHg) and PN2 (mmHg) Given ; T = 25.3°C , Atmospheric pressure= 5.89mmHg , no of moles of NaNO2=  0.0118mol

Distinguish among covalent bonds, ionicbonds, hydrogen bonds, and van der Waals interactions. Compare them in terms ofthe mechanisms by which they form and their relative strengths.

For many purposes we can treat ...monia (NH3) as an ideal ga temperatures above its boiling point of -33. °C. Suppose the pressure on a 650. mL sample of ammonia gas at 9.00°C is reduced to one-third its initial value. Is it possible to change the temperature of the ammonia at the same time such that the volume of the gas doesn't change? If you answered yes, calculate the new temperature of the gas. Round your answer to the nearest °C. O yes O no °C Ô

please help me answer this using hess law

how many mole of oxyegen gas are needed toreact completely with with 52.0 og gaseous CH4 at stp during a combustion reaction? CH4 + 2O2=CO2+2H20

b My Quest x Co. How to Ca x N NSU Logir x PeriodicTa x M Action Re x 0 mySig Tau x G4.25 ml to X NBA Final: x G scientific X NBA Final X c x + now.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=Dassignment-take [References] A 19.9-L tank is filled with H2 to a pressure of 200. atm. How many balloons (each 2.00 L) can be inflated to a pressure of 1.00 atm from the tank? Assume the ideal gas behavior, that there is no temperature change, and that the tank cannot be emptied below 1.00 atm pressure. balloon(s) Submit Answer Try Another Version 3 item attempts remaining Previous Next Email Instructor Save and Exit

Can you help me with this

Answer Q44, 45, 46