Answer:
The pH of the solution is 4.69
Explanation:
Given that,
Mass of potassium = 2.643 grams
Weight of water = 50.00 mL
Weight of HCl=100.00 ml
Mole = 0.120 M
We know that,
is a basic salt.
Let's write it as KY.
The acid would become HY.
We need to calculate the moles of KY
Using formula of moles
The reaction is
The number of moles of KY is 20.98 m
initial moles = 20.98
Final moles
We need to calculate the value of pKa(HY)
Using formula for pKa(HY)
We need to calculate the pH of the solution
Using formula of pH
Put the value into the formula
Hence, The pH of the solution is 4.69
Answer:
Soil is a mix of inorganic minerals, water, air, organic matter from dead and decaying plants and animals, and an incredible array of living organisms, ranging in size from microscopic bacteria and fungi to earthworms, moles, and shrews.
Explanation:
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<span>Scientific hypotheses, theories, and laws are all means to explain a scientific phenomenon. A hypothesis is a testable observation. There must be a way to test your "if X then Y" statement. A theory, while not always a linear shift from a hypothesis, is an established idea about why something happens, as verified by experimentation. A law is a proven fact about what happens and why.</span>
Answer:
Given:
Mass = 2.56 kg
Volume = 0.820 L
To Find:
Density
Explanation:
Formula:
Substituting value of mass & volume in the formula: