Which elements make up the f-block in the periodic table

How many molecules of NaCl are there in 250 grams of table salt

When a bimetallic bar made of copper and iron strips is heated, the bar bends toward the iron strip. the reason for this is?

What element came from of the chemist who first published the periodic table?

How many molecules are in 1.95 moles of water?

The reaction of two gases in a sealed container produces a different gas, and the system reaches equilibrium.

How are real gases different from ideal gases?

Which one doesnt belong in the list below? A. a meter B. one liter C. One centimeter D. one kilometer

Which elements did curies discover

When rubidium metal is exposed to air, two atoms of rubidium, Rb, combine with one atom of oxygen. If 1.98 grams of rubidium is exposed to air, what will be the mass of the product in grams

Fission reactions can get of of control without what taking place?