It is calculated that 0.014 moles of oxygen (O₂) are present in the given sample by using the ideal gas law.
Calculation:
Provided that :
Temperature, T = 273+11 K = 284 K
Pressure, P = 0.5 atm
Volume, V = 0.65 L
Ideal gas constant,R = 0.08205 L atm/mol K
According to the ideal gas law,
we know the formula, PV = nRT
or, n = PV / RT = (0.5 * 0.65) / (0.08205 * 284)
or, n = 0.0139 ≈ 0.014 mole
What is the ideal gas law?
- The universal gas equation, often known as the ideal gas law, is the formula of state for a fictitious ideal gas. Although it has several restrictions, it is a decent approximation of the behavior of numerous gases under various circumstances.
- Benoît Paul Émile Clapeyron introduced it for the first time in 1834 as a synthesis of the experimental Boyle's law, Charles' law, Avogadro's law, and Gay-Lussac's law.
Learn more about ideal gas law here:
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Answer:
The volume (in ml) of a 3.57 M solution of 
that contains 0.884 moles of is 247.61g mL
Explanation:
According to the definition of Molarity
which sates
"The amount of moles of a substance present in one litre of the solution is called as Molarity."
3.57M solution implies that 1000 mL of the solution conatins 3.57Moles of
Hence , 3.57 moles of is present in the 1000 ml of solution
Now,
In 1 mole of is present in the =
ml of solution
Similarily ,
In 0.884 moles of is present in the 
of solution= 247.61g mL
Answer: The correct answer is option a.
Explanation: Binary ionic compounds are the compounds made up of two ions, one is cation which is metal and another is anion which is a non-metal.
Rules for the naming of Binary Ionic compound.
1. First write the full name of cation.
2. The anion is named after using the suffix '-ide'. For example: If the anion is bromine, the name will be bromide and so on.
3. If the metal atom is Transition element, then the roman numeral is included after the metal name to indicate the oxidation number of the metal.
So, in order to write the name of Binary Ionic Compound, we first write metal followed by non-metal. Hence, the correct option is option a.
