Answer: Although the best-known cause of a mass extinction is the asteroid impact that killed off the non-avian dinosaurs, in fact, volcanic activity seems to have wreaked much more havoc on Earth's biota. Volcanic activity is implicated in at least four mass extinctions, while an asteroid is a suspect in just one. Examples, of mass extinctions are Permian extinction of marine species, and Cretaceous extinction of various species, including dinosaurs.
Hiiiiiiiiiiiiiiiiiiiiiikiiiii
Answer:
254.23 g/mol
Explanation:
Atomic mass for Osmium tetroxide would be 254.23 g/ml
Answer:
The answer to your question is ΔE = 0.752 kJ/mol
Explanation:
Data
mass of sample = 0.125 g
Heat capacity = 5.1 x 10² J/°C
ΔT = 11.8°C
ΔE = ?
Formula
ΔE = ΔQ + w
We suppose that work W = 0
ΔQ = mCΔT, then
ΔE = mCΔT
Substitution
ΔE = (0.125)(5.1 x 10²)(11.8)
Simplification
ΔE = (63.75)(11.8)
Result
ΔE = 752.25 J/mol or ΔE = 0.752 kJ/mol