How can you describe the location of hafnium (Hf, atomic number 72) on the periodic table? Choose all that apply.

(A) Transition metals

(B) Noble gases

(C) Group 6, Period 4

(D) Group 4, Period 6

What happens when magma cools during the rock cycle?

How many molecules of dinitrogen pentoxide are in 0.27 moles of dinitrogen pentoxide?

How many oxygen atoms are in 0.25 calcium nitrate

Give the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of lithium sulfide and copper (II) nitrate are mixed.

Why isn't a largest predator just at the top of a food web?

How many moles of lithium are in 83 grams of lithium?

Ocean constitutes most of ___ of water a) Evaporation b) Precipitation c) Condensation d) Transpiration e) Sublimation Don't choose a random letter.

In the reaction, Zn + HCl-> ZnCl2 + H2, 25 grams Zn are reacted with 17.5 grams HCl. How many grams of H2 will be produced? A. 0.382 g of H2 B. 0.479 g of H2 C. 0.7865 g of H2 D. 0.484 g of H2

Is nail varnish soluble?

What is the periodic trend for atomic size from top and bottom in a group? From left to right in a period?