Calculate the actual mass of water that will form if 20.9 of n2H4 reacts with 51.4g of oxygen gas

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

What term is applied to a scientist who studies ancient life, including animal and plant fossils a. anthropologist b. dendroclimatologist c. geophysicist d. paleontologist

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?