Answer:
33.33 h
Explanation:
You know that
1 h = 60 min
If you divide both sides by 60 min, you get the conversion factor: 1 h/60 min = 1.
If you divide both sides by 1 h, you get the conversion factor: 1 = 60 min/1 h.
Both are conversion factors because they both equal one and multiplying a measurement by one does not change its value.
You choose the conversion factor that gives you the correct dimensions for your answer. It must have the correct dimensions on top (in the numerator),
Thus, to convert 2000 min to hours, you use the conversion factor with “h” on the top.
<h2>Mass preservation.</h2>
Explanation:
- Mass of the system must remain the same over time, as the system's mass cannot alter according to the law of preservation of mass for any closed system.
Landolt Experiment -
- Landolt was German chemist, He demonstrated the law of preservation of mass experimentally by utilizing H- glass tube filled with silver nitrate in appendage A and HCl corrosive in appendage B.
- The reactants were blended and a white accelerate of Silver chloride was shaped alongside nitric corrosive. The tube is weighed once more.
Neon is an element because it is a pure atom
2KBrO₃(s) = 2KBr(s) + 3O₂(g)
Oxygen gas is formed.
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