Gravitational force is dependent upon a. the distance and mass
1 answer:
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Explanation:
(a) Dry ice is solid carbon dioxide and its chemical formula is solid .
(b) Sodium chloride is commonly known as salt in daily life. Hence, chemical formula of salt is NaCl.
(c) Laughing gas is also known as dinitrogen monoxide. Hence, its chemical formula is .
(d) Marble (chalk limestone) is chemically known as calcium carbonate. Hence, its chemical formula is .
(e) Baking soda is chemically known as sodium bicarbonate. Hence, its chemical formula is .
(f) Ammonia has a chemical formula as .
(g) Water has a chemical formula as .
(h) Milk of magnesia is a base and it is chemically known as magnesium hydroxide. Its chemical formula is .
(i) Epsom salt is most often found as heptahydrate of sulfate mineral epsomite. Its chemical formula is usually . If not present as a heptahydrate then its chemical formula is
where, value of x can be equal to 0 to 7.
Answer: 35.1 kJ/mol
Explanation:
According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.
According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.
(1)
(1)
The final reaction is:
(3)
By adding (1) and (2)
Hence the expected value for the heat of sublimation of acetic acid is 35.1 kJ/mol