What two units are typically shown on thermometers?

Consider the combustion of ethylene: c2h4(g)+3o2(g)→2co2(g)+2h2o(g) if the concentration of c2h4 is decreasing at the rate of 3.6×10−2 m/s , what is the rate of change in the concentration of co2? express the rate in molarity per second to two significant digits.

Convection is when warm air rises and takes heat with it; eventually it cools and sinks. radiation is when sunlight travels through space without the aid of fluids or solids. a. true. b. false.

The reaction of methane with water to form carbon dioxide and hydrogen is nonspontaneous at 298 k. at what temperature will this system make the transition from nonspontaneous to spontaneous? the following data are valid at 298 k: ch4(g) + 2h2o(g) co2(g) + 4h2(g) substance: ch4(g) h2o(g) co2(g) h2(g) δh°f (kj/mol): –74.87 –241.8 –393.5 0 δg°f (kj/mol): –50.81 –228.6 –394.4 0 s°(j/k • mol):