User Account

All Pages

Calculate the time rquired for the sample to decay

Assignment Help Chemistry
Reference no: EM13176351

Consider a certain type of nucleus that has a rate constant of 2.92 s 10^-2min^-1. Calculate the time rquired for the sample to decay to one-fourth of its initial value.

Reference no: EM13176351

Questions Cloud

What is the freezing point of a solution of ethylene glycol : What is the freezing point of a solution of ethylene glycol (antifreeze), a nonelectrolyte, that contains 140. g of C2H6O2 dissolved in 290. g of water? Use molar masses with at least as many significant figures as the data given.
Effect of antisymmetrization in electon-electron interaction : What is the most important effect of antisymmetrization in electon-electron interaction? Where did antisymmetrization come from? Explain from different statistics of distinguishable particle, indistinguishable particle
What is the new volume of the gas sample : at constant pressure the temperature of a 8.00 liter sample of gas is decreased from 456 K to 365 K. What is the new volume of the gas sample?
What is the hybridization scheme for the central atom : What is the hybridization scheme for the central atom in the following?
Calculate the time rquired for the sample to decay : Consider a certain type of nucleus that has a rate constant of 2.92 s 10^-2min^-1. Calculate the time rquired for the sample to decay to one-fourth of its initial value.
Prepare the quandts 2011 joint federal income tax return : Prepare the Quandts' 2011 joint Federal income tax return. Use the ProSystems software located in the computer lab (Rich Hall room 322). Identify yourself by entering your name where the program asks for "Client ID." Alsowrite your name in the upper..
Calculate the heat capacity of ammonia : You need 70.2 J to raise the temperature of 34.0 g of ammonia from 23°C to 24°C. Calculate the heat capacity of ammonia.
What is the molarity of the hno3 solution : A 65.00 mL sample of HNO3 solution is neutralized by exactly 34.16 mL of 0.5841 M Ba(OH)2. What is the molarity of the HNO3 solution?
What is the specific heat of this piece of iron : a 14.0 g sample of iron was heated from 10.0C to 20.0C it absorbed 15.2 of energy as heat based on this data what is the specific heat of this piece of iron?

Reviews

Write a Review

Chemistry Questions & Answers

  What height of water (in meters) would be supported

At 0.967 atm, the height of mercury in a barometer is 0.735 m. If the mercury were replaced with water, what height of water (in meters) would be supported at this pressure.

  Ethanethiol is a compound with a disagreeable odor

Ethanethiol (C2H6S) is a compound with a disagreeable odor that can be used to impart an odor to natural gas. When ethanethiol is burned, the sulfur reacts with oxygen to form SO2

  Calculate the molar concentration

calculate the molar concentration and the molarity of a sulfuric acid solution of density 1.198 g/mol,

  How much ice in grams would have to melt

How much ice in grams would have to melt to lower the temperature of 51.0 g of water from 65.0*C to 0*C

  Define cool down the reaction flask as needed

Assume you can heat up or cool down the reaction flask as needed for the reaction to proceed with practical rates even if no temperature is indicated in the table

  Calculate the volume of 0.500m hydrochloric solution

Calculate the volume of 0.500M hydrochloric solution that must be added to 20.5g of sodium ethanoate to make 500cm3 a buffer of pH4.50.The pKa value of ethanoate acid is 4.76.

  Calculate the mass of propylene glycol

Calculate the mass of propylene glycol that must be added to 0.500 kg of water to reduce the vapor pressure by 4.60 torr at 40 degrees celcius.

  Calculate the mass of sodium chlorate

Calculate the mass of sodium chlorate that must be decomposed to form 6.5 g of oxygen. 2NaClO3(s) → 2NaCl(s) + 3O2(g)

  What is the change in internal energy

The combustion of one mole of ethanol (C2H5OH(l)) to produce carbon dioxide and gaseous water has ?Hr = -1235 kJ · mol-1 at 298 K. What is the change in internal energy for this reaction?

  State does ph have an effect on the cell potential

Does pH have an effect on the cell potential (Ecell) for the following oxidation-reduction reaction? 5Fe^2+(aq) + MnO4^-(aq) + 8H^+(aq) ---> 5Fe^3+(aq) + Mn^2+(aq) + 4H20(l)

  Atomic mass of naturally occurring ag

Explain what it means that the atomic mass of naturally occurring Ag, is a mixture of its two isotopes forms, is 107.868 u.

  Compute delta hf for cac2

Compute delta Hf for CaC2 : CaC2 + 2H2O-->Ca(OH)2 +C2H2 From the given enthalpy of reaction data as water(H2O) =(2*-285.83),calcium hydroxide Ca(OH)2=(-986.2) , AcetyleneC2H2 =(226.77)?

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