Which of these statements describes a difference between the mechanics of airplane flight and rocket flight?
A. Airplanes must carry an oxidizer along with fuel.
B. Airplanes need only upward thrust as a force for flight.
C. Rockets need only upward thrust as a force for flight.
D. Rockets need air molecules from the atmosphere to generate
thrust

If 200.0g of copper(ll) sulfate react with an excess of zinc metal, what is the theoretical yield of copper

Look at the reaction below: ca(hco3)2 --> caco3 + co2 + h2o first, balance the reaction. once balanced, use dimensional analysis or another method to find out how many moles of carbon dioxide will be produced if we start with 16.5 moles of calcium bicarbonate (calcium hydrogen carbonate). = mol of co2 number needs to be reported to three significant figures.

Which statement describes both homogeneous mixtures and heterogeneous mixtures?