What is the mass of 5.35*1021 platinum atoms?

Explain why crushing a can is physical change and not chemical

Why is iron placed in the d-block of the periodic table?

How does the ionic radius of a nonmetal compare with its atomic radius? Explain the change in radius. Explain why atomic radii decrease as you move from left to right across a period. Which element has the larger ionization energy? Li, NKr, NeCs, Li

When production first began some eighty years ago, ammonia production relied upon the direct reaction between gaseous hydrogen and nitrogen called the Haber process: 3 H2 (g) + N2 (g) ⇀↽ 2 NH3 (g) ∆H = - 92.

Which scientist won the nobel prize for discovering the electron? a. dalton b. democritus c. lavoisier d. thomson

Toussaint L' ouveeture lead a revolt that eventually resulted in Independence for

If a solution contains 1 x 106 hb molecules, how many o2 binding sites are available? if the solution of hb is 50% saturated with o2, how many binding sites are occupied by o2?

A. what are isotopes? b. how are the isotopes of a particular element alike? c. how are they different?

The line of longitude used as the origin in a system of coordinates

In the ground state, has only 1 electron in a p orbital. A. carbon B. fluorine C. hydrogen D. nitrogen E. aluminum