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):

Much of the general structure and physical properties of the interior of the earth are inferred from: a)deep oil and gas bore holes b)geologic investigations c)analysis of seismic waves d) study of volcanoes

How do dying stars contribute to the formation of planets

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth