isaacgaitonde isaacgaitonde

08-09-2016
Mathematics

contestada

If 250 mg of a radioactive element decays to 180 mg in 24 hours, find the half-life of the element.

Respuesta :

08-09-2016

250mg/2=125m

180mg/24hrs=45mg/6hrs=15mg/2hrs

125/15=8 ⅓

8 ⅓ *2 =25/3 *2=50/3 hrs

Answer Link

Otras preguntas

Select the correct text in the passage. What is the opportunity cost In this scenarlo? Harry has been very busy at work for the past two weeks. He has been work

Rewrite the following expression X^9/7

7.2.4 Area of Triangle HELP PLEASE!! (JAVA SCRIPT) I WILL WAIT FOR THE SOLUTION. Write a function that computes the area of a triangle given its base and heigh

20 points and a brainliest! And PLEASE show your work. Find the volume and total surface area of the figure. Include the formula and each step of your process.

Can someone please help will mark brainlist

A trapezoid has of parallel sides. they two pairs no pairs one pair

What is a benefit and drawback of Arctic Apples

Prompt "I respectfully disagree with those who claim that the War Between the States was fought over slavery or that the abolition of slavery in the Revolutiona

Air at 40°C flow steadily through the pipe shown in Fig. 1 below. If P1 = 40 kPa (gage), P2 = 10 kPa (gage), D = 3d, Patm ≅ 100 kPa, the average velocity at sec

HELP Jonah bought 3 packages of hot dogs and 2 packages of hot dog buns and paid $21.90. He went back and purchased 2 more hot dog packages of and 5 more packag