How many atoms of cadmium are in 2.50 moles of cadmium?
2.50 moles Cd x
6.022 x 1023 atoms Cd
1 mol Cd

One of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description?

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

If you add 5.00 ml of 0.100 m sodium hydroxide to 50.0 ml of acetate buffer that is 0.100 m in both acetic acid and sodium acetate, what is the ph of the resulting solution? acetic acid: ka = 1.8. x 10-5