Hydrides are compounds made up of hydrogen and metal. why ammonia has the highest boiling point among the hydrides of elements in group 15?   select one: a.  the bonds in ammonia are polarb.  the size of the nitrogen atom is the smallestc.  the ammonia molecules is the smallest among the hydrides of the elements in group 15  d.  hydrogen atoms bonded to the nitrogen atom can form hydrogen bonds

What material does not melt at any temperature

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth

How many moles of kci are produced from 2.50 moles k