kelseyyraee kelseyyraee

01-11-2016
Chemistry

contestada

How many milligrams remain of a 15.0 mg sample of radium-226 after 6396 years? The half life of radium-226 is 1599 years.

Respuesta :

kaity0001 kaity0001

01-11-2016

There are 4 half lives of radium-226 in 6396 years. 15.0 divided by half 4 times (15.0/2= 7.5, 7.5/2 = 3.75, 3.75/2 = 1.875) equals 1.875 mg of radium-226.

Answer Link

Otras preguntas

A sailboat travels a distance of 2 1/2 miles in 1/6 of an hour. Which complex fraction represents the unit rate in miles per hour?

What was the primary reason Maryland was founded?

What is the product of 6 and 8?

Explain how the bar model was used

The three types of rocks are classified by___a.Colorb.grain size c.chemical composition d.how they formed

Help me please plz I need this

when did western civilization first embrace the idea that humans needed to be one with nature? A. early modern period B. roman period C. romantic period D.

As a valet at the mall, Davis works 8-hour shifts. He earns $4 per hour and keeps 90% of his tip money. How much does Davis need to be tipped so that he takes h

Use the conditional statement to answer the question. If a whole number is even, then the number is divisible by 4. Are the statement and its converse true? A.

If granite undergoes high temperatures and high pressures within earth what type of rock will be formed