THINK ABOUT IT… A scientist has an 8g sample of radium. How many grams of the sample will decay in 800 years if the half-life is 1600 years? Read it carefully...a full half-life hasn’t passed yet! Don’t forget to label your units - g!

Why did southern business leaders want to increase the number of slaves

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a. the mitochondria b. the nucleus c. the vacuoles d. the endoplasmic reticulum

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action