AgNO3 + Cu ⇨ Cu(NO3)2 + Ag

Using the balanced equation above, how many moles of copper are needed to produce 54 grams of silver in this single replacement reaction?

when atmosphere interacts with biosphere they focuses on on the sources and sinks of green house gases (ghgs) air pollutants, particular matters, water and energy between the earth's surface and the atmosphere. the biosphere affects the climate. the atmosphere and biosphere are in constant interaction with each other, and all living things rely on gases in the atmosphere for life. organisms such as animals take in oxygen gas form the atmosphere to use in every cell of their body for smooth functioning of daily routine exercises.

the answer would be b i believe