Answer:
The formula for velocity is v = Δs/Δt
Explanation:
Velocity equals change in speed divided by change in time.
It has the same composition throughout, unlike a heterogeneous which has visibly separate substances
The liquids hexane
and water are placed in a test tube. The test tube is stoppered, shaken, and
placed in a test tube rack. The liquids separate into two distinct
layers because hexane and water have different molecular polarities. The answer
is number 2.
<h2>a)
The rate at which is formed is 0.066 M/s</h2><h2>b)
The rate at which molecular oxygen is reacting is 0.033 M/s</h2>
Explanation:
Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.
The rate in terms of reactants is given as negative as the concentration of reactants is decreasing with time whereas the rate in terms of products is given as positive as the concentration of products is increasing with time.
Rate in terms of disappearance of = = 0.066 M/s
Rate in terms of disappearance of =
Rate in terms of appearance of =
1. The rate of formation of
2. The rate of disappearance of
Learn more about rate law
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0.000001ppm
Explanation:
Mass of fluoride = 500g
Volume of water = 500000liters
Unknown:
Parts per million of fluoride = ?
Solution:
The parts per million is the amount of solute in milligram dissolved in a liter of water or milligram per kilogram of solvent
It is a unit used to express very small concentration.
we need to convert g - mg
500g = 500 x 10⁻³mg = 0.5mg
Concentration in parts per million =
Concentration in parts per million = = 0.000001ppm
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