Consider the equilibrium system described by the chemical reaction below, which has a value of Kc equal to 280 at a certain temperature. If 0.400 mol of IBr is allowed to reach equilibrium in a 3.00 L container, what will the equilibrium concentration of IBr be

Express the following number in scientific notation. 0.026890 =

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.