The number of moles of hydrogen that is needed to produce 0.253 mol of water

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

Label a-f based on the table using c for concentrated and d for dilute

What will most likely happen when two bromine atoms bond together?