1. How many grams of potassium (K) would be needed to make 6.7 grams of potassium oxide (ko)? ​

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.

Apropane torch is lit inside a hot air balloon during preflight preparations to inflate the balloon. which condition of the gas remains constant