The mass percentage of KCl solution is 21.34%
Calculation,
Given molality of KCl aqueous solution = 3. 64 m = 3. 64 mole/ Kg
It means 3. 64 mole of solute present in 1Kg of solvent
or , 3. 64 mole of solute present in 1000 g of solvent ( water )
Mass of solute ( KCl ) = 3. 64 mole×74.55 g/mole =271.3 g
The total mass of solution ( KCl + water ) = 271.3 g + 1000 g = 1271.3 g
Mass percentage is equal to percentage of mass of solute present in total mass of solution.
Mass percentage = 100×271.3 g/1271.3 g = 21.34%
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Answer:
Salts can be several different colors and may be any of the five tastes, including salty, sweet, bitter, sour or savory. Their odor depends on the acid and base it is comprised of. Salts comprised of strong acids and bases, called strong salts, are odorless.
Answer is: <span>name of the product nuclide is thorium-230.
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<span>Alpha particle is
nucleus of a helium-4 atom, which is made of
two protons and two neutrons.
²³</span>⁴U → ²³⁰Th + α (alpha
particle).
Alpha
decay is radioactive decay in which an atomic
nucleus emits an alpha particle (helium nucleus) and transforms
into an atom with an atomic number that is reduced by
two and mass number that is reduced by four.
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Answer:
There are two definitions for acid and base in chemistry.
Explanation:
There are different definitions of Acid and Base:
The <em>Arrhenius</em> definition sais that <u>acid</u> is every substance that increases the concentration of protons in water. Thus, a <u>base</u> is a substance that increase the concentration of oxydriles in water.
On the other hand, the <em>Bronsted</em> definition sais that an <u>acid</u> is a substance with the ability to give protons and a <u>base</u> is a substance with the ability to accept protons.
