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

WHEN ROADS ARE SLIPPERY, YOU SHOULD: A. Decrease the distance you look ahead of your vehicle B. Stop and test the traction of your tires while going up C. Avoi

A runner has run 2.281 kilometers of a 10 kilometer race. How much farther does he need to run to finish the race? Show your work.

How does the point of view affect the plot of the passage?

Which series of words mean 'path, tour, park'? A. parque, gira, estanque B. lago, estanque, parque C. senda, gira, parque D. campo, granja, parque I need this q

Introduction:Match the terms with their definitions. mission system a Spanish system used to convert American Indians to Catholicism conquistadors where a natio

HELPPP PLEASE‼️‼️❕❕❕❕ Find the two points on the graph

Answer questions 2 and 3 Please help me I need this correct or my grade drops and thank you if you answer my the questions.

Jared is reading a 300-page book he borrowed from the library. So far, he has 85 read pages. He has more days to read the book before he returns it to the libra

What two body systems play a role in maintaining blood sugar homeostasis? Choose all that apply. *

5.2 The Right Height: True or Not? To the left are diagrams that show a corresponding height and base for parallelograms, as well as diagrams that DO NOT show a