35 Before the discovery of oxygen some scientists had a different theory about burning. What did they believe was present in all substances that burned?
A air
B hydrogen
C phlogiston
D reactivity

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

The nuclear fission process releases neutrons and question 27 options: alpha particles electrons energy beta particles

Astudent completes a titration by adding 12.0 milliliters of naoh(aq) of unknown concentration to 16.0 milliliters of 0.15 m hcl(aq). what is the molar concentration of the naoh(aq)? 1)5.0 m 2)0.20 m 3)0.11 m 4)1.1 m