Fluorine-18 undergoes positron emission with a half-life

Assignment Help Chemistry
Reference no: EM13641536

Fluorine-18 undergoes positron emission with a half-life of 1.1x10^2 minutes. If a patient is given a 248mg dose for a PET scan, how long will it take for the amount of fluorine-18 to drop to 83mg?

Reference no: EM13641536

Questions Cloud

At 20 degrees c what is the minimum diameter of the cu wire : 1. an array of solar panels on a residential roof produces at full sun 7.2 kw of dc power ampvoltage of 600v a 40-ft cu
What do the terms activating deactivating ortho : what do the terms activating deactivating ortho para-directing and meta-directing mean. how do these relate to aniline
Find ex where x is the outcome when one rolls a six-sided : find ex where x is the outcome when one rolls a six-sided balanced die.find the mgf of x. also using the mgf of x
A baseball leaves a pitchers hand horizontally at a speed : a baseball leaves a pitchers hand horizontally at a speed of 160 kmh. the distance to the batter is 18.3 m. neglect air
Fluorine-18 undergoes positron emission with a half-life : fluorine-18 undergoes positron emission with a half-life of 1.1x102 minutes. if a patient is given a 248mg dose for a
A crate of mass 450 kg is being transported on the flatbed : a crate of mass 45.0 kg is being transported on the flatbed of a pickup truck. the coefficient of static friction
Refrigerant 134a enters an insulated throttling valve at : refrigerant 134a enters an insulated throttling valve at 140 lbfin2 and 80degf. the refrigerant exits the valve at 50
Assume that the enthalpy fusion of ice is 6020 jmol and : assume that the enthalpy fusion of ice is 6020 jmol and does not vary appreciably over the temperature range of 270-290
A tube of listerine tartar control toothpaste contains 42 : a tube of listerine tartar control toothpaste contains 4.2 ounces. as people use the toothpaste the amount remaining in

Reviews

Write a Review

Chemistry Questions & Answers

  What is the ph of a solution using equilibrium concentration

What is the pH of a solution of 0.20M RbCHO2? Must use an ICE table (Initial Concentration, Change in Concentration, Equilibrium Concentration) and the quadratic formula unless the "x is small" approximation can be used.

  Explain what is the structure for the indole

What is the structure for the indole that would be obtained from the phenylhydrazone

  Evaluate the ph of the solution formed by naoh

Calculate the pH of the solution formed by the addition of 55.5 mL of 0.100 M NaOH to 49.2 mL of 0.100 M H3PO4.

  Explain the structure of fmn and coenzyme q important

Why is the structure of FMN and Coenzyme Q important for the function of the electron transport chain

  Explain the ph after the addition of naoh

Calculate the pH of the 0.20 M NH/0.26 M NHCl buffer. What is the pH after the addition of 20.0 mL of 0.050 M NaOH to 90.0 mL of the buffer solution? The Kb of ammonia is 1.8 x 10-5.

  Calculate the concentration of nacl

Calculate the volume of a solution NaOH c=0.2 mol/l necessary to neutralize v=200 ml of solution HCl c=0.1 mol/l.

  How much energy in kilojoules is required

How much energy in kilojoules is required to convert 100 mL of water at its boiling point from liquid to vapor?

  697 grams of a solute with a molecular mass of 2790 grams

69.7 grams of a solute with a molecular mass of 2790 grams are dissolved in enough water to make 1.00 dm3 of solution

  Compute the mass of h2o formed when 22 grams of propane are

compute the mass of h2o formed when 22 grams of propane are burnt if 4.4grams of propane are burnt in excess o2 7.2g of

  Explain what is the ksp of calcium hydroxide

A 500ml portion of a solution at pH=13 will just barely dissolve 3.2x10-­4 moles of calcium hydroxide. What is the Ksp of calcium hydroxide

  Evaluate what is the ph at the equivalence point

We are titrating 27.00 mL of 0.2501 M hypobromous acid (HOBr, Ka = 2.000x10?9) with 0.5200 M LiOH. What is the pH at the equivalence point

  State the net change in entropy of the system

the net change in entropy of the system and surroundings considered together must be a positive quantity; (e) the entropy of the universe must remain constant.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd