Answer:
![\large \boxed{\text{156 mL}}](https://tex.z-dn.net/?f=%5Clarge%20%5Cboxed%7B%5Ctext%7B156%20mL%7D%7D)
Explanation:
1. Calculate the moles of CoCl₂
![\text{Moles of CoCl}_{2} = \text{4.66 g CoCl}_{2} \times \dfrac{\text{1 mol CoCl}_{2}}{\text{129.84 g CoCl}_{2}} = \text{0.035 89 mol CoCl}_{2}](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%20CoCl%7D_%7B2%7D%20%3D%20%5Ctext%7B4.66%20g%20CoCl%7D_%7B2%7D%20%5Ctimes%20%5Cdfrac%7B%5Ctext%7B1%20mol%20CoCl%7D_%7B2%7D%7D%7B%5Ctext%7B129.84%20g%20CoCl%7D_%7B2%7D%7D%20%3D%20%5Ctext%7B0.035%2089%20mol%20CoCl%7D_%7B2%7D)
2. Calculate the volume of solution
Answer: 2232 torr
Explanation:
Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.
The combined gas equation is,
![\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}](https://tex.z-dn.net/?f=%5Cfrac%7BP_1V_1%7D%7BT_1%7D%3D%5Cfrac%7BP_2V_2%7D%7BT_2%7D)
where,
= initial pressure of gas = 750 torr
= final pressure of gas = ?
= initial volume of gas = 36.0 L
= final volume of gas = 15.0 L
= initial temperature of gas = ![10^oC=273+10=283K](https://tex.z-dn.net/?f=10%5EoC%3D273%2B10%3D283K)
= final temperature of gas = ![78^oC=273+78=351K](https://tex.z-dn.net/?f=78%5EoC%3D273%2B78%3D351K)
Now put all the given values in the above equation, we get:
![\frac{750\times 36}{283}=\frac{P_2\times 15.0}{351}](https://tex.z-dn.net/?f=%5Cfrac%7B750%5Ctimes%2036%7D%7B283%7D%3D%5Cfrac%7BP_2%5Ctimes%2015.0%7D%7B351%7D)
![P_2=2232torr](https://tex.z-dn.net/?f=P_2%3D2232torr)
The pressure will be 2232 torr if the volume changes to 15.0 L and the temperature changes to 78 °C, if the amount of gas stays the same.
Answer: The density, mass, and weight of the iron block make it difficult to lift than a cork block.
Explanation: