State what is the age of the sample if the initial activity

Assignment Help Chemistry
Reference no: EM13170858

The specific 14C activity of a sample of charcoal is determined to be 12.47 dpm g-1of carbon. What is the age of the sample if the initial activity of 14C in this sample was 13.56 dpm g-1of carbon? What would be the error if the intial activity were 15.30 dpm g-1of carbon?

Reference no: EM13170858

Questions Cloud

Define a student constructs a coffee cup colrimeter : A student constructs a coffee cup colrimeter and places 50 ml of water into it. After a brief period of stabilization, the temp of the water in the calorimeter is 23.5 celsius
Will the reported amount of antacid in the sample : An air bubble was initially trapped in the buret but was dispensed during the back titration of the unreacted HCI. As a result of this technique error, will the reported amount of antacid in the sample be too high or too low? Explain
State amphibolite metamorphic facies of thelewisian gneiss : The Rb-Sr data given below are for whole-rock samples from amphibolite metamorphic facies of theLewisian gneiss complex in Scotland (Moorbath et al., 1975), and the Sm-Nd data are for whole-rocksamples from granulite metamorphic facies of the same..
Sensation-seeking behavior : Zuckerman and others suggest that the need for sensation-seeking behavior
State what is the age of the sample if the initial activity : The specific 14C activity of a sample of charcoal is determined to be 12.47 dpm g-1of carbon. What is the age of the sample if the initial activity of 14C in this sample was 13.56 dpm g-1of carbon?
What was the concentration of the rm hcl solution : A 391-rm mL sample of unknown rm HCl solution reacts completely with rm Na_2CO_3 to form 20.1 g rm CO_2. What was the concentration of the rm HCl solution?
How must the two heats of reactions for the neutralization : How should the two heats of reactions for the neutralization of NaOH and the two acids compare? Why?
Percent of people break new year’s resolutions : What percent of people break New Year’s resolutions within the first three months?
State what is the value of the ionization constant : monoprotic acid, has a pH=2.00. What is the value of the ionization constant, Ka for this acid?

Reviews

Write a Review

Chemistry Questions & Answers

  What is the internal energy of the gas

A gas is compressed from initial volume of 5.60L to 1.23L by an external pressure of 1.00atm. During the compression the gas releases 128J of hear. What is the internal energy of the gas?

  Calculate the ph of a sodium cyanide solution

Calculate the pH of a sodium cyanide solution that is 0.37M NaCN. The Ka for hydrocyanic acid HCN is 4.00E-10.

  Calculate what the limiting reactant

Calculate what the limiting reactant is in the reaction between copper (II) oxide and hydrochloric acid

  How many grams of zinc are there in 22.7 g of zncl2

How many grams of zinc are there in 22.7 g of ZnCl2?

  How much heat is required

How much heat is required to change a) 32.6 g of ice at 0.0 C into water at 0.0 C b) 32.6 g of water at 100.0 C into steam

  State the normal boiling point of liquid bromine

The normal boiling point of liquid bromine is 58.8oC, and its molar enthalpy of vaporization is Delta Hvap = 29.6 kJ/mol. (a) When Br2(l) boils at its normal boiling point, does its entropy increase or decrease?

  Calculate ph - chemistry questions

Chemistry Questions on Calculate P H

  How many kilocalories were absorbed by the water

175g of water was heated from 15 degrees to 88 degress celsuis. how many kilocalories were absorbed by the water?

  Explain important information about nitration

Important information about Nitration, Explain why nitration of 1,4-dichloro-benzene yields the mononitro derivative while N,N'-diacetyl-1,4-phenylenediamine forms

  Explain which has been accelerated to a kinetic energy

What is the velocity (m/s) of a doubly protonated ion with a m/z ration of 324.9, which has been accelerated to a kinetic energy of 0.75 MeV?

  Calculate the total internal energy change

A gaseous reaction occurs at a constant pressure of 40.0 atm and releases 68.0 kJ of heat. Before the reaction, the volume of the system was 9.00 L. After the reaction, the volume of the system was 2.00 L.

  State a cell that uses bromine to oxidize hydrogen

A cell that uses bromine to oxidize hydrogen H^+ under standard conditions at 298 K has a positive potential.

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