An acid‑base neutralization reaction releases energy. (H3O+)+(OH−)⟶(2H2O) EΔ=−55.8 kJ

Calculate the energy change when 25.0 mL of 0.100 M HCl reacts with excess aqueous NaOH.

If 10.0 ml of the solution on the right are withdrawn from the 100 ml beaker and diluted again in a similar manner, what is the new concentration? m nacl

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?