on the basis of electronegativity, which of these pairs of elements is most likely to form monatomic ions?

a. ba and o
b. cs and rb
c. o and f
d. na and k

Complete the sentence. the lower the hydrogen ion concentration, the the ph. higher lower closer to 7 closer to 0

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

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm