Answer:
cesium
Explanation:
The most reactive metal on the periodic table is francium. However, francium is a man-made element and only minute quantities have been produced, so for all practical purposes, the most reactive metal is cesium. Cesium reacts explosively with water, though it is predicted francium would react even more vigorously.
I had an examon this on Friday, I'm pretty positive theanswer is C. The reason is when there is combusion, there is an exothermic change, or energy is being released
Initially the balloon was 21 liters with 4.00 moles of hydrogen
Therefore 1 mole of hydrogen had 21/4 = 5.25 liters
Therefore; 1 mole of oxygen would still contain 5.25 liters
Hence; 2 moles of oxygen contain 5.25 × 2 = 10.5 liters
Thus; the total volume of the balloon will be;
21 +10.5 = 31.5 liters
The answer is 35.9168 grams
