10. (05.05 MC)

Read the chemical equation.

Fe2O3 + CO → Fe + CO2

If 1.8 moles of Fe2O3 react with 2.7 moles of CO, how many moles of each product are formed? (3 points)
5.4 moles Fe and 1.8 moles CO2
2.7 moles Fe and 0.9 moles CO2
3.6 moles Fe and 5.4 moles CO2
1.8 moles Fe and 2.7 moles CO2

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

Listen base your answer to the question on the information below. propane is a fuel that is sold in rigid, pressurized cylinders. most of the propane in a cylinder is liquid, with gas in the space above the liquid level. when propane is released from the cylinder, the propane leaves the cylinder as a gas. propane gas is used as a fuel by mixing it with oxygen in the air and igniting the mixture, as represented by the balanced equation below. c3h8(g) + 5o2(g) → 3co2(g) + 4h2o() + 2219.2 kja small amount of methanethiol, which has a distinct odor, is added to the propane to consumers detect a propane leak. in methanethiol, the odor is caused by the thiol functional group (–sh). methanethiol, ch3sh, has a structure that is very similar to the structure of methanol. what is the correct structural formula for a molecule of methanethiol

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?