Amount of Substance Left after Two Half Lives Calculator

✖Initial Concentration of Radioactive Substance is defined as the amount of substance that is taken initially at time = 0 of the reaction.ⓘ Initial Concentration of Radioactive Substance [N₀]

+10%

-10%

✖Amount of Substance Left After Two Half Lives is defined as the amount that is left after radioactive disintegration at time=t. It is equal to the (1/4) times of the initial amount.ⓘ Amount of Substance Left after Two Half Lives [N_t(2)]

⎘ Copy

👎

Formula

✖

Amount of Substance Left after Two Half Lives

Formula

`"N"_{"t(2)"} = ("N"_{"0"}/4)`

Example

`"6.5u"=("26u"/4)`

Calculator

LaTeX

Reset

👍

Download Chemistry Formula PDF PDF Image

Amount of Substance Left after Two Half Lives Solution

STEP 0: Pre-Calculation Summary

Formula Used

Amount of Substance Left After Two Half Lives = (Initial Concentration of Radioactive Substance/4)
N_t(2) = (N₀/4)
This formula uses 2 Variables

Variables Used

Amount of Substance Left After Two Half Lives - (Measured in Kilogram) - Amount of Substance Left After Two Half Lives is defined as the amount that is left after radioactive disintegration at time=t. It is equal to the (1/4) times of the initial amount.
Initial Concentration of Radioactive Substance - (Measured in Kilogram) - Initial Concentration of Radioactive Substance is defined as the amount of substance that is taken initially at time = 0 of the reaction.

STEP 1: Convert Input(s) to Base Unit

Initial Concentration of Radioactive Substance: 26 Atomic Mass Unit --> 4.31740452048404E-26 Kilogram (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

N_t(2) = (N₀/4) --> (4.31740452048404E-26/4)

Evaluating ... ...

N_t(2) = 1.07935113012101E-26

STEP 3: Convert Result to Output's Unit

1.07935113012101E-26 Kilogram -->6.5 Atomic Mass Unit (Check conversion here)

FINAL ANSWER

6.5 Atomic Mass Unit <-- Amount of Substance Left After Two Half Lives

(Calculation completed in 00.004 seconds)

You are here -

Home » Chemistry » Nuclear Chemistry » Amount of Substance Left after Two Half Lives

Credits

Created by Pracheta Trivedi

National Institute Of Technology Warangal (NITW), Warangal

Pracheta Trivedi has created this Calculator and 25+ more calculators!

Verified by Soupayan banerjee

National University of Judicial Science (NUJS), Kolkata

Soupayan banerjee has verified this Calculator and 800+ more calculators!

< 25 Nuclear Chemistry Calculators

Direct Isotope Dilution Analysis (DIDA)

Go Unknown Amount of Compound present in Sample = Labelled Compound present in Sample*((Specific Activity of Pure Labelled Compound-Specific Activity of Mixed Compound)/Specific Activity of Mixed Compound)

Inverse Isotope Dilution Analysis (IIDA)

Go Unknown Amount of Active Compound = Amount of Inactive Isotope of Same Compound*(Specific Activity of Mixed Compound/(Specific Activity of Pure Labelled Compound-Specific Activity of Mixed Compound))

Sub-Stoichiometric Isotope Dilution Analysis (SSIA)

Go Amount of Compound in Unknown Solution = Amount of Compound in Stock Solution*((Specific Activity of Stock Solution-Specific Activity of Mixed Solution)/Specific Activity of Mixed Solution)

Age of Minerals and Rocks

Go Age of Mineral and Rocks = Total Number of Radiogenic Lead Atom/((1.54*(10^(-10))*Number of U-238 present in Mineral/Rock Sample)+(4.99*(10^(-11))*Number of Th-232 present in Mineral/Rock Sample))

Age of Plant or Animal

Go Age of Plant or Animal = (2.303/Disintegration Constant of 14C)*(log10(Activity of 14C in Original Animals or Plants/Activity of 14C in Old Wood or Animal Fossil))

Age of Minerals and Rocks containing Pure Thorium and Pb-208

Go Age of Mineral and Rocks for Pure Th/Pb-208 system = 46.2*(10^9)*log10(1+(1.116*Number of Pb-208 present in Mineral/Rock Sample)/Number of Th-232 present in Mineral/Rock Sample)

Age of Minerals and Rocks containing Pure Uranium and Pb-206

Go Age of Mineral and Rocks for Pure U/Pb-206 system = 15.15*(10^9)*log10(1+(1.158*Number of Pb-206 present in Mineral/Rock Sample)/Number of U-238 present in Mineral/Rock Sample)

Determination of Age of Minerals and Rocks using Rubidium-87/ Strontium Method

Go Time taken = 1/Decay Constant for Rb-87 to Sr-87*((Ratio of Sr-87/Sr-86 at Time t-Initial Ratio of Sr-87/Sr-86)/Ratio of Rb-87/Sr-86 at Time t)

Threshold Kinetic Energy of Nuclear Reaction

Go Threshold Kinetic Energy of Nuclear Reaction = -(1+(Mass of Projectile Nuclei/Mass of Target Nuclei))*Reaction Energy

Neutron Activation Analysis (NAA)

Go Weight of Particular Element = Atomic Weight of Element/[Avaga-no]*Specific Activity at Time t

Amount of Substance left after n Half Lives

Go Amount of Substance Left After n Half Lives = ((1/2)^Number of Half Lives)*Initial Concentration of Radioactive Substance

Packing Fraction (In Isotopic mass)

Go Packing Fraction in Isotopic mass = ((Atomic Isotopic Mass-Mass Number)*(10^4))/Mass Number

Specific Activity using Half Life

Go Specific Activity = (0.693*[Avaga-no])/(Radioactive Half Life*Atomic Weight of Nuclide)

Specific Activity of Isotope

Go Specific Activity = (Activity*[Avaga-no])/Atomic Weight of Nuclide

Q-value of Nuclear Reaction

Go Q Value of Nuclear Reaction = (Mass of Product-Mass of Reactant)*931.5*10^6

Amount of Substance Left after Three Half Lives

Go Amount of Substance Left After Three Half Lives = Initial Concentration of Radioactive Substance/8

Amount of Substance Left after Two Half Lives

Go Amount of Substance Left After Two Half Lives = (Initial Concentration of Radioactive Substance/4)

Molar Activity using Half Life

Go Molar Activity = (0.693*[Avaga-no])/(Radioactive Half Life)

Binding Energy Per Nucleon

Go Binding Energy per Nucleon = (Mass Defect*931.5)/Mass Number

Number of Half Lives

Go Number of Half Lives = Total Time/Half Life

Packing Fraction

Go Packing Fraction = Mass Defect/Mass Number

Molar Activity of Compound

Go Molar Activity = Activity*[Avaga-no]

Radius of Nuclei

Go Radius of Nuclei = (1.2*(10^-15))*((Mass Number)^(1/3))

Radioactive Half Life

Go Radioactive Half Life = 0.693*Mean Life Time

Mean Life Time

Go Mean Life Time = 1.446*Radioactive Half Life

Amount of Substance Left after Two Half Lives Formula

Amount of Substance Left After Two Half Lives = (Initial Concentration of Radioactive Substance/4)
N_t(2) = (N₀/4)

What is Radioactive Disintegration ?

Radioactive Disintegration is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive.

How to Calculate Amount of Substance Left after Two Half Lives?

Amount of Substance Left after Two Half Lives calculator uses Amount of Substance Left After Two Half Lives = (Initial Concentration of Radioactive Substance/4) to calculate the Amount of Substance Left After Two Half Lives, Amount of Substance Left after Two Half Lives formula is defined as the amount that is left after radioactive disintegration at time=t. It is equal to the (1/4) times of the initial amount. Amount of Substance Left After Two Half Lives is denoted by N_t(2) symbol.

How to calculate Amount of Substance Left after Two Half Lives using this online calculator? To use this online calculator for Amount of Substance Left after Two Half Lives, enter Initial Concentration of Radioactive Substance (N₀) and hit the calculate button. Here is how the Amount of Substance Left after Two Half Lives calculation can be explained with given input values -> 3.9E+27 = (4.31740452048404E-26/4).

FAQ

What is Amount of Substance Left after Two Half Lives?

Amount of Substance Left after Two Half Lives formula is defined as the amount that is left after radioactive disintegration at time=t. It is equal to the (1/4) times of the initial amount and is represented as N_t(2) = (N₀/4) or Amount of Substance Left After Two Half Lives = (Initial Concentration of Radioactive Substance/4). Initial Concentration of Radioactive Substance is defined as the amount of substance that is taken initially at time = 0 of the reaction.

How to calculate Amount of Substance Left after Two Half Lives?

Amount of Substance Left after Two Half Lives formula is defined as the amount that is left after radioactive disintegration at time=t. It is equal to the (1/4) times of the initial amount is calculated using Amount of Substance Left After Two Half Lives = (Initial Concentration of Radioactive Substance/4). To calculate Amount of Substance Left after Two Half Lives, you need Initial Concentration of Radioactive Substance (N₀). With our tool, you need to enter the respective value for Initial Concentration of Radioactive Substance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search