Calculate the number of moles of c2h6 in 8.37x10^23 molecules of c2h6

Asample of ammonia reacts with oxygen as shown. 4nh3(g) + 5o2(g) 4no(g) + 6h2o(g) what is the limiting reactant if 4.0 g of nh3 react with 8.0 g of oxygen? o2 because it produces only 0.20 mol of no. nh3 because it produces only 0.20 mol of no. o2 because it produces two times less no than nh3. nh3 because it produces three times more no than o2.

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units: