Assume the half-life of a radioactive element is 250,000 years. if you start out with 16 grams of this element, how much will be left after 1.5 million years?

Lithium has two isotopes. Li-6 and Li-7. Li-6 mass = 6.015121amu Li-7 mass = 7.016003amu Lithium Mass = 6.94049amu What is percent abundance of Li-6? I know that there is an equation: 6.

A solution is made by dissolving 5.84 grams of NaCl

What is fission reaction

What is added to a concentrated solution of sodium thiosulfate to dilute it?

Where would you expect to find the 1H NMR signal of (CH3) 2Mg relative to the TMS signal? (Hint: Magnesium is less electronegative than silicon.)

How many atoms are in 151 g of calcium?

Which statements about the formation of the solar system are true and in a correct order? A. A black hole collapsed to form the sun; small planetary objects formed; small planetary objects collided with each other to form larger objects. B.

Which is an important step in the alternate method for balancing equations in redox reactions? a) indicating the types of bonds found in the molecules. b) determining the speed at which reactions take place.

How many moles of NH3 can be produced from 24.0 mol of H2 and excess N2

An ecosystem contains all the biotic and abiotic factors in an area. answers true or false