The element with the greatest density is osmium, which has
adensity of 22.6g/ cm3
calculate the mass of 32.1cm2 osmium.

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)

What properties would have caused early researchers to name hydrogen "inflammable air”

The approximate distance from earth to the moon is 240 thousand miles. the approximate distance from earth to the sun is 93 million miles. in standard notation, the approximate distance from the sun to earth is miles greater than the approximate distance from earth to the moon. in scientific notation, the distance is m × 10n, where m is and n is .