Stock solution of KOH is mol/dm-3. X cm3 aliqout is added to approximately 200.0cm3 of water in a volumetric flask and the volume of the solution is made up with water to 250cm3 . What is the value of X If the final concentration is 0.05mol/dm-3?

Need ! asap will mark 10 pts using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers

How many molecules are in 6.0 moles of methane

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.