What is the pH of a solution with a concentration of hydronium ions of 2.84 × 10–4?

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

Pls ill give u brainliest which of the following is true about science? 1. political conditions are unable to influence it. 2. economic concerns may prevent it from solving problems.

With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals