What is the half-life of this radioactive isotope

Assignment Help Chemistry
Reference no: EM13168704

copper-64 is used to study brain tumors. assume that the original mass of a sample of copper-64 is 26.00g. After 64 hours, all that remains is 0.8125g of copper-64. What is the half-life of this radioactive isotope?

Reference no: EM13168704

Questions Cloud

How much overhead should be allocated to ending goods : During the current period, Department A finished and transferred 50,000 units to Department B. Of the 50,000 units, 20,000 were 1/5 complete at the beginning of the period and 30,000 were started and completed during the period.
What volume of it is needed to add to water : Methyl alcohol (CH3OH) has a density of 0.793 kg/L. What volume of it is needed to add to water to make 5 liters of 0.250 M solution?
Explain buffers made using acetic acid : Using pH-based arguments only, why do scientists use phosphate-based bufers instead of buffers made using acetic acid
What is the coefficient of carbon : Balance the equation for the reaction of sodium metal with water to produce aque- ous sodium hydroxide and hydrogen gas carbon. The products of this reaction are tin and carbon dioxide. When the equation is written and balanced, what is the coeffi..
What is the half-life of this radioactive isotope : copper-64 is used to study brain tumors. assume that the original mass of a sample of copper-64 is 26.00g. After 64 hours, all that remains is 0.8125g of copper-64. What is the half-life of this radioactive isotope?
In what principal quantum level did the electron begin : an excited hydrogen atom emits light with a frequency of 1.141 x 10E14 hz to reach the energy level for which n-4. in what principal quantum level did the electron begin?
Find the ph of a solution that has a weak acid : Find the pH of a solution that has a weak acid concentration of 1.72 M and a weak base concentration
A molecule in which centers of positive and negative charge : A molecule in which centers of positive and negative charge do not coincide must be.
Explain what is a zymogen : What is a zymogen? Is it used over and over like other enzymes? And what is the physiological advantage

Reviews

Write a Review

Chemistry Questions & Answers

  Calculate q and w

Constant external pressure of3.00 atm, followed by2) against a constant external pressure of 2.00 atm. Calculate q and w. (101.33 J = 1 L atm)

  Express the mass of oxygen numerically in grams

Magnesium oxide decomposes into magnesium and oxygen. If 12.09 of magnesium oxide decomposes to form 7.29 of magnesium, what mass of oxygen gas is also released in the reaction?

  How many grams of hydrogen peroxide are needed

Lead(II) sulfide reacts with hydrogen peroxide to form lead(II) sulfate and water. How many grams of hydrogen peroxide are needed to react completely with 265 g of lead(II) sulfide?

  How many joules of energy are necessary to heat the steam

A sample of h20 with a mass of 46.0 grams has a temperature of -58 degrees celcius. how many joules of energy are necessary to heat the steam from 100 degrees celsius to 114 degrees celcius.

  Calculate the volume

Calculate the volume of 1.70 m Na3104 in milliliters that contains 3.00 g of solute.

  What is the average atomic mass of rubidium

Rubidium has two common isotopes, 85Rb and 87Rb. If the abundance of 85Rb is 72.2% and the abundance of 87Rb is 27.8%, what is the average atomic mass of rubidium.

  Calculate the vapor pressure of a solution of glycerol

calculate the vapor pressure of a solution of glycerol of 265ml in 3.80x10^2ml of H2O at the normal boiling point of H2O

  What is the empirical formula

Styrene, a compound substance used to make Styrofoam® cups and insulation, contains 92.3 and 7.7 by mass and has a molar mass of 104 . What's the empirical formula?

  What must the activation energy be for the rate

The rate constant of some reactions double with every 10 degree rise in temperature. Assume that a reaction takes place at 295 K and 305 K. What must the activation energy be for the rate constant to double as described?

  What is the structure - stereochemistry

What is the structure (including functional groups)? Stereochemistry (racemic or single enantiomer)?

  What will be the concentration of the diluted solution

If you dilute 25.0 of the stock solution to a final volume of 0.460 , what will be the concentration of the diluted solution?

  How many liters of oxygen are needed

How many liters of oxygen are needed to exactly react with 19.8 g of methane at STP?

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