A. how many significant figures are in 400,000?
b. how many significant figures in 0.000600?
c. how many significant figures in 21,995,000?
d. how many significant figures in 0.05050?

Which best describes how johannes kepler developed his laws of planetary motion

How are isotopes of the same chemical element alike? how are they different?

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation: