n2(g)2no(g)++o2(g)o2(g)2n2o(g)→→→2n o(g),2no2(g),2n2(g)+o2(g),δh=+180.7 kjδh=−113.1kjδh=−163.2kj use hess's law to calculate δh for the following reaction: n2o(g)+no2(g)→3no(g)

In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.

Luminous objects such as flashlights emit light that we can see. how do we see an object that isn’t luminous? a. the object emits light that reaches our eyes. b. light reflects off the object and reaches our eyes. c. light passes through the object uninterrupted. d. light is fully absorbed by the object. e. we can’t see an object that isn’t luminous.

According to the article, which five aspects of mindfulness did researchers study?