Why was Mendeleev able to use his periodic table to make predictions

2NaN3 - > 3N2+Na How many moles are there of NaN3

Suppose you want to create a 6 ng/μL solution in a 25 mL volumetric flask. However, this concentration cannot really be accurately prepared in a single step due to the small amount of mass that would need to be measured.

What is a disproportionation reaction?

Which statement best describes what makes a base weak? A base is weak when it forms few ions in water. A base is weak when only a little of it is dissolved in water. A base is weak when its concentration is high.

Sophie is pushing her bicycle up a hill with a force of 10N. If she increases her force to 12 N she wil

At STP conditions, 11 g of SO, (64.06 g/mole) have a volume of 3.8L 130L 0.0076L 250L 22L

What is the mass number of a carbon isotope that consists of 6 protons 6 electrons and 8 neutrons

Z=3 1s2 express answer as an ion

The Minoan civilization existed on the island of Crete, and it was influential in the Mediterranean during the 2000s BCE. In which way can the Phoenicians be described as successors to the Minoans? A. Phoenicia had a powerful, well-trained army. B.

In a distillation experiment, Provide reasons for any discrepancies between the initial volume of the liquid mixture (20ml) and the sum of the total final volume (18.4ml). Take into account water's property of solvent.