PH is scale which measures the acidity or alkalinity of a solution. It ranges from a level of 1 to 14. A pH which range from 1 to 6 represents an acidic substance. At pH of 7, signifies the solution is neutral. And at a pH of 8-14 represents a basic solution. pH is expressed as the negative logarithm of the concentration of hydronium ions.
pH = - log [H+]
pH = - log 1
pH = 0
Answer:
184 mL.
Explanation:
The following data were obtained from the question:
Initial volume (V1) = 62.8 mL
Initial concentration (C1) = 167 μM
Final concentration (C2) = 57.0 μM
Final volume (V2) =?
To obtain the final volume of the solution, we shall apply the dilution formula as follow:
C1V1 = C2V2
167 × 62.8 = 57 × V2
10487.6 = 57 × V2
Divide both side by 57
V2 = 10487.6 / 57
V2 = 183.99 ≈ 184 mL
Therefore, chemist must add distilled water to the solution until it reaches a volume of 184 mL.
A polar covalent bond is a covalent bond in
which the atoms have an unequal attraction for
electrons and so the sharing is unequal. ... The
atom with the greater electronegativity acquires
a partial negative charge, while the atom with
the lesser electronegativity acquires a partial
positive charge.
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Answer:
STP conditions, which are defined as a pressure of 100 kPa and a temperature of 273.15 K, should immediately get you thinking about molar volume of a gas.
More specifically, about the fact that 1 mole of any ideal gas occupies exactly 22.7 L at STP.
This means that all you really need to figure out is the number of moles of oxygen that took part in the reaction. If you know how many moles of oxygen are needed, you can use the molar volume of a gas at STP to calculate the volume of oxygen.
Use water's molar mass to determine how many moles of water would the reaction produce