How long will it take for 100 grams of a substance with a half life of 2 years to decay to a mass of 50 grams?

How do you convert 4.0 mol of sodium to atoms?

The idea that all living things are made up of cells is considered scientific law. This means the idea a) is an emerging scientific idea that has a logical explanation. b) has been tested with similar results at least twice.

Blank is an organism that hunts and kills another for food

ZnCl2+AgNO3=Zn (NO3) 2+AgCl

Describe how the atoms in Calcium Chloride obey the octet rule.

Which statement about Clinton s impeachment is true? A. Clinton s impeachment was supported by the majority of Americans. B. The impeachment charges were based on fraud found during the Whitewater investigation. C.

When the equation ZnS+O ZnO+SO isbalanced the coefficientof O is 1, 5, 3, or2

Radioactive elements decay at a know rate known as half-life. Choose all of the correct statements concerning half-life. Carbon-14 has a half-life of 5,730 years. A 30 gram sample will be 10 grams after 5,730 years.

I am the most reactive metal in Period 4.

Titanium is a transition metal used in many alloys because it is extremely strong and lightweight. titanium tetrachloride (ticl4) is extracted from titanium oxide using chlorine and coke (carbon). if you begin with 1.