User Account

All Pages

Define the half life of the radioisotope

Assignment Help Chemistry
Reference no: EM13491406

The half life of the radioisotope^ 158,47Eu is 1.0 hr.the decay of a 16.0g sample of the isotope to 1.25g required how many hours

Reference no: EM13491406

Questions Cloud

Find the travelers total displacement : A traveler first drives 18.8 km east, then 31.8 km southeast, and finally 11.1 km south. Find the traveler's total displacement
Explain a common driving force in displacement reactions : a common driving force in displacement reactions? a. precipitation b. evolution of a gas c. formation of a weak or nonelectrolyte d. the transfer of electrons
Post the individual entries and totals to the general ledger : ACC200 Accounting Systems - 201290. Determine that the subsidiary ledgers agree with the control accounts in the general ledger. g.  The following adjustments at the end of February are necessary.
What is the resultant force of air resistance : A 1500 kg car moving on horizontal roa with speed of 30 m/s coasts to a stop in 1800 m, once the motor is turned off. What is the resultant force of air resistance
Define the half life of the radioisotope : The half life of the radioisotope^ 158,47Eu is 1.0 hr.the decay of a 16.0g sample of the isotope to 1.25g required how many hours
How does the intensity level change : At a rock concert, the engineer decides that the music isn't loud enough. He turns up the amplifiers so that the amplitude of the sound, How does the intensity level change
Determine the average kinetic energy of the helium atoms : A sealed container of volume 0.10 m3 holds a sample of 3.0 × 1024 atoms of helium gas in equilibrium. What is the average kinetic energy of the helium atoms
Define the best set of changes to apply in order to increase : For the endothermic equilibrium CaCO3(s) + NH4+(aq) + SO42+(aq) -> CaSO4(s) + NH3(g) + HCO3-(aq), explain the best set of changes to apply in order to increase product yield effectively.
Find the average velocity of the mouse : A mouse travels along a straight line; its distance x from the origin at any time t is given by the equation    x = (8.5cm x s^-1)t - (2.5cm x s^-2) t2.   Find the average velocity of the mouse

Reviews

Write a Review

Chemistry Questions & Answers

  What will be the new volume

The volume of a gas at 95.0 kPa is 300.0 mL. If the pressure is increased to 177 kPa, what will be the new volume?

  Starting with toluene as the only organic starting material

starting with toluene as the only organic starting material and utilizing an organocopper coupling method

  State the approximate value of the equilibrium constant

What is the approximate value of the equilibrium constant, Kn, for the neutralization of hydrochloric acid with sodium hydroxide, shown in the equation below? HCL(aq) + NaOH(aq) --> H2O (l) + NaCl (aq)

  Explain inflate the airbag upon impact

If an automobile airbag has a volume of 9.80 L, what mass of NaN3 is required to fully inflate the airbag upon impact under conditions of atmospheric pressure (1.00 atm) and room temperature (25 C).

  Define the entropy of a collection of a molecules

If the entropy of a collection of a molecules in 50,000 boxes is 3.73 x 10^-20 J/K, how many molecules are there

  More strong base is added until the equivalence point is

a solution is made by mixing 9.00 mmol of a weak acid and 3.00 mmol of the strong base. what is the resulting ph? more

  Define the activation energy for a reaction

Derive the activation energy for a reaction that proceeds 2 times faster when the temperature is raised from 20 C to 30 C.

  Explain find the mole number and volume of each

Two mols of a Van der Waals fluid are maintained at a temperature T=0.95Tc , in a volume of 200cm3 . Find the mole number and volume of each

  Define molar concentration of cl- in the standard kno3

Compute the molar concentration of Cl- in the standard KNO3 solution if the flask is rinsed only one time with distilled water.

  Explain concentration of lead nitrate is required to begin

In the above system, if lead nitrate is added to sodium chromate, what concentration of lead nitrate is required to begin formation of a precipitate? CHOOH(aq) + H2O(l) CHOO-(aq) + H3O+(aq)

  What concentration of x would be required for the

a solution that was 3.78 x 10-3 m had a transmittance of 0.212 when measured in a 2.00-cm cell. what concentration of x

  Explain ammonia can react with oxygen

At high temperatures, ammonia can react with oxygen according to the following unbalanced reaction: NH3 + O2 ---> NO + H2O If 5.76 moles of NH3 react with 12.2 moles of oxygen

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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