In the reaction mechanism below, which substance is acting like a catalyst and is it homogeneous or heterogeneous? step 1 2n2og + cl2(g) → 2n2(g) + 2clo(g) step 2 2clo(g) → cl2(g) + o2 (g)

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

What happens to the concentration of hydronium ions as the ph of a solution increases? a. hydronium ion concentration stays the same b. hydronium ion concentration decreases c. hydronium ion concentration increases

Type the letter that represents the correct location for each particle type below. the neutron is found at __ the electron is found at __ the proton is found at __