calculate the δh∘ for this reaction using the following thermochemical data: ch4(g)+2o2(g)⟶co2(g)+2h2o(l) δh∘=−890.3kj c2h4(g)+h2(g)⟶c2h6(g) δh∘=−136.3kj 2h2(g)+o2(g)⟶2h2o(l) δh∘=−571.6kj 2c2h6(g)+7o2(g)⟶4co2(g)+6h2o(l) δh∘=−3120.8kj

2) the relationship between temperature in degrees fahrenheit, f, and units kelvin, k, is given by the formula k32) 273.15. which of the following readings, in kelvins, is equivalent to a fahrenheit reading of 7 (rounded to the nearest hundredth decimal place)?

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.

Alex is the head photographer for the yearbook and the newspaper. she has a large staff of assistant photographers because they need to take pictures at all of the school events. she knows that some of her photographers have better cameras and can take action shots at sporting events, and that some of them are good at taking candid pictures in the hallways. she sets firm deadlines so she has enough time to look through all of the shots and choose the best ones. she gives her photographers constructive feedback to them improve their pictures. respectful enforcer warlord doormat peacemaker