Please help??? Identify which of the following are oxidation-reduction reactions. If a reaction is a redox
reaction, name the element oxidized and the element reduced.
a. Mg(s) + Brz(1) - MgBrz(s)
b. H2CO3(aq) — H20(1) + CO2(g)
I
c. CaCO3(s) + 2HCl(aq) - CaCl2(aq) + H2O(1) + CO2(g)
d. Cuo(s) + H2(g) → Cu(s) + H2O(1)
e. Li(s) + H2O(l) → LiOH(aq) + H2(g)
f. NaCl(aq) + AgNO3(aq) - NaNO3(aq) + AgCl(s)
g. HgO(s) → Hg(1) + O2(g)
h. P.(s) + O2(g) → P,010(s)
i. C3H2(g) + O2(g) → CO2(g) + H2O(g)
j. Al(s) + HCl(aq) → AlCl3(aq) + H2(g)

How will the emission of an alpha particle affect the atomic number of an atom

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.

If 16.00g of hydrogen gas reacts with 126.73g of oxygen, how many grams of water are yielded? (both reactants are completely consumed in the reaction.)