The decay of which radioisotope can be used to estimate the age of the fossilized remains of an insect?

(1) Rn-222 (3) Co-60

(2) I-131 (4) C-14

Time remaining 58:52 bonds that form between two nonmetal atoms are usually ionic bonds.

What do the quantities "atomic number" and "mass number" represent?

You are given 250. mL of a stock 0.100 M Alanine solution and instructed to dilute a portion of it. So, you use a pipette and transfer 5.00 mL of the original stock solution into a flask and add 95.0 mL of water.

The pressure at the center of the earth is probably greater than 3x106 atm, and the temperature there is about 4000 °C.

What is a barometric pressure

Why is chemistry important for the study of living things

How much does radon cost per gram

What is wrong with rutherford's model of the atom

What do the numbers listed for an element on the periodic table represent? The smaller number is the number of protons, and the greater number is the mass. The smaller number is the number of neutrons, and the greater number is the number of protons.

Helium (He), oxygen (O), carbon (C) fluorine (F), and chlorine (Cl) are all nonmetals. Using the periodic table, which pair of nonmetals do you predict has the most similar properties, and why?