Answer : The entropy change of the system is, 361.83 J/K
Solution :
Formula used :
where,
= entropy change of the system = ?
= enthalpy of vaporization = 34.6 kJ/mole
n = number of moles of diethyl ether = 4.20 mole
= normal boiling point = 
Now put all the given values in the above formula, we get the entropy change of the system.
Therefore, the entropy change of the system is, 361.83 J/K
Answer:
C. substances that are used up in a reaction
Explanation:
Substances are combined in a chemical reaction to give rise to other substances. The substances that come together are called REACTANTS while the substances that are produced are called PRODUCTS.
Reactants are used up in the reaction to give rise to new products at the end of the reaction. For example, in the reaction as follows:
6CO2 + 6H2O --> C6H12O6 + 6O2
CO2 (carbon dioxide) and water (H2O) are the REACTANTS of the reaction, which are used up to form glucose and oxygen (products)
Answer: 
Explanation:
According to the Avogadro's law, the volume of gas is directly proportional to the number of moles of gas at same pressure and temperature. That means,
or,
where,
= initial volume of gas
= final volume of gas
= initial moles of gas
= final moles of gas
Answer:
P(total pressure) = 504 mmHg = 504mm/760mm/atm = 0.663 atm
Explanation:
Apply Dalton's Law of Partial Pressures.
P(total) = ∑Partial Pressures = ∑(256mm + 198mm + 48mm) = 504 mmHg
P(total pressure) = 504 mmHg = 504mm/760mm/atm = 0.663 atm
<span>Any elements in Group 14, also known as the carbon group, will have four valence electrons. This group contains carbon, silicon, geranium, tin, lead, and flerovium. These elements are all in the same group precisely because of the same number of valence electrons. These electrons determine the chemical properties of an element, so all of these elements will have similar chemical properties.</span><span />
