How many grams of Cu would be needed to react with 2.0 mol HNO3?
<span>by the equation </span>
<span>3Cu + 8HNO3 --> 3Cu(NO3)2 + 2NO + 4H2O </span>
<span>2.0 mol HNO3 reacts with 3/8 ths as many moles of Cu = 0.75 moles of Cu </span>
<span>causing disruption or annoyance through being unwelcome or uninvited.</span>
Answer: D. Insects
Fossils that are preserved in the Burgess Shale are mostly the remains of soft-bodied organisms.
So the answer is D because insects don’t really have bones like the rest of the other options. They have exoskeletons which protects their organs and gives them support for moving around.
Speed = distance / time
s = 550 / 4
s = 137.5 m/s
In short, Your Answer would be Option B
Hope this helps!
Two or more elements make up a compound