A/1 * b/c = d you discover a chemical reaction that produces 2 moles of valuable propane for every 7 moles of carbon supplied. essentially, this is an exchange rate of 2 moles of propane for every 7 moles of carbon. if you have 1.4 moles of carbon, how many moles of propane can you produce using this reaction?

As per the problem 2 moles of propane are produced when 7 moles of carbon are supplied

so if we supply 1 mole of carbon the moles of propane obtained = 2 /7

if we supply 1.4 moles of carbon the moles of propane obtained = 2 X 1.4 /7 = 0.4 moles of propane

Hence answer is  propane we can produce using this reaction = 0.4 moles from 1.4 moles of carbon

precipitation

explanation:

when it goes from cloud to rain/back to earth in the form of rain

the leaf is an organ of a typical plant, and the main functions are to complete photosynthesis and allow the plant to exchange gas, just like how we have the respiratory system. leaves have the stomata, which collects maintains co2 and o2 levels. this is necessary for cell metabolism. the leaf also collects sunlight using chloroplasts. succinctly, leaves own a pivotal role in sustaining plant life.