Explain how many days are required for a sample decay

Assignment Help Chemistry
Reference no: EM13492039

For the decay of 226 Ac by all processes combined, the first-order rate constant is k = 0.556 d^- 1. How many days are required for 76.0% of a sample of 226 Ac to decay? equation to use is ln(n/no)=-kt

Reference no: EM13492039

Questions Cloud

Prepare the equity section of the balance sheet : Prepare journal entries to record the transactions affecting equity during the period, Prepare a statement showing the changes in retained earnings during the year
Calculate the pressure amplitude in pascals of the sound : A point source of source emits a tone with a power of 45 W that has a frequency of 429 Hz. calculate the pressure amplitude in Pascals of the sound
Determine the initial kinetic energy of the system : A 31.0 kg child runs with a speed of 3.00 m/s tangential to the rim of a stationary merry-go-round. Calculate the initial kinetic energy of the system
Effect on the financial performance of the organisation : Not having an accounting background, the owner Joe Logs, does not understand the concept of depreciation and is under the impression that depreciation is a process of creating a cash fund to replace an asset.
Explain how many days are required for a sample decay : For the decay of 226 Ac by all processes combined, the first-order rate constant is k = 0.556 d^- 1. How many days are required for 76.0% of a sample of 226 Ac to decay? equation to use is ln(n/no)=-kt
What is the waters temperature after a half hour : At rest a person has a metabolic rate of 4.2 x 10^5 J/hr. The person is submerged neck-deep into a tub containing 1.0 x 10^3 kg water at 27.00 degrees Celcius. what is the water's temperature after a half hour
Identifying the internal control weakness : Write a memo to the company Chairperson identifying the internal Control weakness in this situation. State the steps to be taken to correct the weakness.
What is the stores degree of operating leverage : How many pairs of stockings must be sold to break even? What does this represent in total dollar sales?
Calculate the free cash flow for cellular access for : Keeping the other assumptions that underlie Table 7.1 the same, recalculate unlevered net income (that is, reproduce Table 7.1 under the new assumptions, and note that we are ignoring cannibalization and lost rent).

Reviews

Write a Review

Chemistry Questions & Answers

  A 350-ml sample of 020 m lioh is titrated with 025 m hcl

a 35.0-ml sample of 0.20 m lioh is titrated with 0.25 m hcl. what is the ph of the solution after 23.0 ml of hcl have

  Explain what is the remaining ag+ ion concentration

what is the remaining Ag+ ion concentration and is precipitation complete? The solubility product constant of AgBr is 5.0 × 10-13.

  How many grams of nh3 will be produced

how many grams of NH3 will be produced? Which reactant remains in excess, and in what mass?

  Compute the entropy changes for fusion

Celsius and -125 degrees Celsius , respectively. Calculate the entropy changes for fusion ( solid to liquid) and vaporization (liquid to gas ).

  Define a water treatment plant and total filter area

A water treatment plant has a flowrate of 6,000 m3/d. Determine the following (assume filtration rate is 60 m3/d-m2): a. Total filter area

  State and identify the following compound from its ir

Identify the following compound from its IR and proton NMR spectra. C6H10O: NMR: ? 3.31 (3H, s); ? 2.41 (1H, s); ? 1.43 (6H, s) IR: 2110, 3300 cm-1 (sharp)

  State the decomposition of hydrogen peroxide is first order

The decomposition of hydrogen peroxide is first order in H2O2. 2H2O2 -----> 2H2O + O2 The rate constant for this reaction at 20 C is 1.8 * 10^-5 s^-1

  Determine the amount of heat energy

Determine the amount of heat energy is needed to raise the temperature of 0.362 kilograms of Cu from 23. Degree Celsius to 60 degree Celsius?

  If 150 g of carbon reacts

If 150 g of carbon reacts with 250 g Cl2 with an 85% yield, what is the mass of CCl4 produced

  What would the final pressure be

A gas is heated from 14 degrees celsius to 121 degrees celsius and the volume increased from 15.0 liters to 41.4 liters. If the original pressure is 1 atm, what would the final pressure be?

  Explain the limiting reagent in the procedure

the reduction of 9-fluorenone to 9-hydroxyfluorene by sodium borohydride. What is the limiting reagent in the following procedure?

  Explain a balloon vendor at a street fair is using a tank

A balloon vendor at a street fair is using a tank of helium to fill her balloons. The tank has a volume of 102 L and a pressure of 131 atm at 23 celsius

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