How to calculate atomic mass of an element, Q. How to calculate atomic mass...

Q. How to calculate atomic mass of an element? Copper survive as a mixture of two isotopes. The lighter isotope (Cu-63) amid 29 protons and 34 neutrons makes up 69.17% of coppe

Ionic bond,

why do soaps not work under hard water , The Ca 2+ and Mg 2+ ions in har...

The Ca 2+ and Mg 2+ ions in hard water form scum with soap. Therefore they don''t form lather and therefore don''t clean the dirt.

Stoichiometery, what is the molar mass of C3H4

what is the molar mass of C3H4

Periodic table, what groups comprise each block of elements(s,p.d and f blo...

what groups comprise each block of elements(s,p.d and f blocks)in the periodic table

Laws of chemical combination, what is law of defenit propotion

what is law of defenit propotion

Chem project, need to know common methods of preparing acetone/propanone. N...

need to know common methods of preparing acetone/propanone. Need to include chemical equation for reaction that produces that molecule.

Electronic configuration and position in periodic table, Q. Electronic Conf...

Q. Electronic Configuration and Position in Periodic Table? The outstanding feature of the actinide and lanthanide elements is the great similarity in chemical and physical pro

Inner Transition Elements, Why are they (Lanthanides and Actinides) called ...

Why are they (Lanthanides and Actinides) called Inner Transition Elements?

Why does the solution become purple after drops of iodine, 1(a). In these r...

1(a). In these reactions, I2 (in the iodine solution) has what oxidation number? 1(b). The iodine starch reaction that turns purple depends on iodine being in the I- state. Was