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Answer:</h2>
- Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas.
example: Acetic acid
- Bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery;
example: sodium bicarbonate
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Answer:
Explanation:
(a) Convert pounds to kilograms.
(b) Calculate the dose
Answer:
The main difference between an atom and a molecule lies in the size: while the atom is the smallest unit into which matter can be divided into any of its states, a molecule is the union of a group of atoms, that is, this composed of several atoms. Thus, for example, a water molecule is composed of two hydrogen atoms and one oxygen atom (H2O). Therefore, it can be said that atoms are the smallest unit in which the chemical elements of the world can be divided, while molecules are the particles of matter that are formed through the combination of these elements.
Answer:
[NaOH] = 0.107M
Explanation:
25.21ml of NaOH(aq) soln + 0.550g KHPh => NaKPh + H₂O
The reaction is 1 to 1 NaOH to KHPh => moles NaOH neutralized = moles KHPh used. (KHPh => Potassium Hydrogen Phthalate f.wt. = 204.22 g/mol)
moles KHPh = 0.550g / 204.22g·mol⁻¹ = 0.0027 mole
moles NaOH neutralized = moles KHPh used = 0.0027 mole NaOH in 25.21ml aqueous solution ...
Molar concentration of NaOH solution = moles NaOH/Liters solution = 0.0027mol NaOH/0.0251L = 0.107M NaOH solution.
