smpanic smpanic

10-06-2020
Chemistry

contestada

4. If 175 undecayed nuclei remain from a sample of 2800 nuclei, how many half-
lives have passed? (Show your work.) *
Your answer

Respuesta :

jeracoo jeracoo

10-06-2020

Answer:

X = 4

Explanation:

Start 2800

End 175

175 = 2800x(0.5)^X

175/2800 = 0.5^X

0.0625 = 0.5^X

log(0.5 x) = log(0.0625)

x · log(0.5) = log(0.0625)

-0.301x = -1.204

x = -1.204/-0.301

x = 4

Answer Link

Otras preguntas

if A=(0,0) and B=9(2,5), what is the approximate length of AB

HELP ME OUT PLS!!!! The radius of a sphere is 7 cm. What is the sphere's volume? Round to the nearest tenth, and use 3.14 for pi. O 723,2 cm O 1868.2 cm O 1436,

During the day, high temperatures can cause rocks to: please 33 points

Write the word sentence as an inequality. A number y minus 1/2 is no more than −3/2 .

Assignment: 04.06 plan the bodyi dont know what to write in this assignment for my 9th grade english class

Hechen paro es para el parcial

would like some help

2 inches 5 inches and 1/4 inches

Which TWO programs does the state spend the majority of it's budget on?

A bag holds 13 marbles. 6 are blue, 2 are green, and 5 are red. If you select two marbles from the bag in a row without replacing the first marble, what is the