Serenasandhu16go Serenasandhu16go

Physics

Answered

I need help please ;)

5. The half-life of 1-131 is 8.07 days. If 25 g are left after 40.35 days, how many grams
were in the original sample?

I Need Help Please 5 The Halflife Of 1131 Is 807 Days If 25 G Are Left After 4035 Days How Many Grams Were In The Original Sample class=

Answer :

LammettHashgo LammettHashgo

Notice that 40.35 is 5 times the half-life of 8.07 days. So in this time, the starting amount x of the sample was halved 5 times until 25 g of it were left, meaning

x/2⁵ = 25 g

Solve for x :

x = 2⁵ • (25 g) = 800 g

Answer Link

Go Teaching: Other Questions

What Does Arlie Hochschild Call Mothers Who Accept The Dual Workloads Of Paid Labor At Work And Unpaid Labor At Home Without Any Help?

If A Server Is Using Manual Synchronization, How Often Should The Server Be Manually Synchronized?

A Large Banking Client Recently Completed Migrating Their Entire Organization To cloud. They Need Accenture To Help Them Assess How Secure They Are. What Benefi

The Most Biologically Devastating Oil Spills In The Marine Environment Are Usually A Result Of?

In A Recent Study, Your Town's Chamber Of Commerce Found That 73% Of Town Residents Believed That Local Businesses Overcharged For Their Products. The Source Of

Entrepreneurs Must Make Sense Of Complex Information And Make Decisions About How To Invest Their Time, Effort, And Other Resources. Consequently, It Is Importa

The Main Goal Of The Congress Of Vienna In 1815 Was To: Select One: O A. Restore Strong Monarchies To Power In Europe After The Fall Of Napoleon O B. Create A L

Which Actions Could Leaders Take In Accordance With This Law? Check All That Apply. Increase The Penalties For Offenses Committed By Gang Members In A School Zo

If We Combine The Reaction Of An Acid Protonating Water And The Reaction Of Its Conjugate Base Deprotonating Water, The Net Reaction After Canceling Common Term

One Of The Most Important Parts Of A Broker’s Job Is Keeping Track Of Trust Funds Received And Disbursed. This Requires Accurate __________ Be Maintained At All

If A Risk-averse Small Business Owner Can't Reduce The Level Of Risk To Where They Are Comfortable, They Can Either Insure Against Future Losses Or ________

In The Context Of Nepal What Might Be Different Methods Of Peaceful Protestdiscuss 