Because they can look at the fossils that they left behind and see what kind of animal it was and what happened to it if another animal is inside of the fossil or if the bones are misplaced
Answer:
Distance = 10 meters and displacement = 10 meters
D.
We should Turn off the Bunsen burner, move away any other combustible materials, Smother the fire with a watch glass or damp cloth and notify the teacher immediately.
The use of Bunsen burners poses a fire risk. They generate an open flame and burn at a high temperature, which increases the risk of an accident. It is crucial that the following rules are followed for everyone working in a laboratory's safety and convenience. In the event of a fire, sound the nearest fire alarm pull station, alert all lab staff, and leave the area immediately.
Learn more about Bunsen burner here-
brainly.com/question/743920
#SPJ4
Answer:
Q = 6.68x10⁻⁶
Explanation:
The initial solutions are Pb(NO₃)₂ and NaBr. As sodium and nitrates salts are soluble, the insoluble product must be the formed from the other ions, PbBr₂.
The soluble product equilibrium is written as:
PbBr₂(s) ⇄ Pb²⁺(aq) + 2Br⁻(aq)
Where Q is defined as:
Q = [Pb²⁺] [Br⁻]²
As:
[Pb²⁺] = 0.0630M
[Br⁻] = 0.0103M
Q = [Pb²⁺] [Br⁻]²
Q = [0.0630M] [0.0103M]²
<h3>Q = 6.68x10⁻⁶</h3>
