How many molecules of ethane (C2H6) are present in 0.875 g of C2H6? ?

a. a primary source combines several different accounts of an event. b. a primary source generally benefits from having been written after an event.

explanation:

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.