What are the concentrations of hydroxide and hydronium ions in a solution with a pH of 10.2? (4 points) 1.4 x 10−4 M H3O+ and 7.1 x 10−11 M OH−

3.8 x 10−6 M H3O+ and 2.6 x 10−9 M OH−

8.3 x 10−9 M H3O+ and 1.2 x 10−6 M OH−

6.3 x 10−11 M H3O+ and 1.6 x 10−4 M OH−

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates

alchemy hadn't scientific methods of study, appeal to mysticism and fantasy, the knowledge of chemistry and physics were modest at that time.

alchemy was - but as new rules were discovered it either changed into chemistry or it became "unscientific".

hcl + naoh → h2o + nacl

explanation:

hcl + naoh → h2o + nacl   is the reaction that is correctly balanced.

however, pcl3 + h2 → ph3 +3hcl, 2ca+ 3cl2 → cacl3, and c5h12 + 5o2 → 5co2 + 6h2o are not correctly balanced.