Positron emission of radiotracers
Positrons cannot penetrate matter more than a few atomic diameters, but positron emission of radiotracers can be monitored in medical diagnosis. Explain
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The molar heat capacity of liquid iron exceeds that of iron vapor by 2.5222cal/k,the molar heat of evaporation of liquid iron at 1600c is 85500cal,and the vapor pressure of liquid iron at 1600c is 3.9*10-2 mm-hg.
If a 17.5 g sample of iron(III) oxide reacted with 5.00 L of carbon monoxide at 788 torr and 76 degrees celsius until one reactant is completely consumed, how many grams of iron are produced?
Consider the unbalanced equation: C5H12(l) +O2(g) --> CO2(g) +H2O(l) if 25.2 grams of pentane (C5H12) are burned in excess oxygen, how many grams of H2O will be produced?
The packages slide along the surface ABC to a conveyor belt which moves with a velocity of 2 m/s. Knowing that 0.25 k ? ? between the packages and the surface ABC, determine the distance d if the packages are to arrive at C with a
A drum has a radius of 0.40 m and a moment of inertia of 4.7 kg · m2. The frictional torque of the drum bearings is 3.0 N · m. A ring at one end of a rope is slipped on a short peg on the rim of the drum,
A solution is prepared by mixing 50.0 mL of 0.17 M Pb(NO3)2 with 50.0 mL of 1.9 M KCl. Calculate the concentrations of Pb2+ and Cl ‾ at equilibrium. Ksp for PbCl2(s) is 1.6 multiplied by 10-5.
A horizontal circular cylinder of diameter D = 0.2m and length 2m is elastically mounted on two springs and towing tank, as illustrated in the figure below.
A 25.0-mL sample of 1.00 M NH3 is titrated with 0.15 M HCl. What is the pH of the solution after 15.00 mL of acid have been added to the ammonia solution? Kb = 1.8 × 10¯5.
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Provide five (5) reasons why working from a person centred, strengths-based positive framework, and providing positive lifestyle strategies can reduce
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