Explanation:
Molecular mass of NO2= 14+16×2=46
1 mole NO2 = 46 gm of NO2
9.4 moles of NO2= 46×9.4 gm= 432.4 gm NO2.
Answer:
The total heat content of the system.
Explanation:
- Enthalpy is a thermodynamic quantity equivalent to the total heat content of a system.
- Enthalpy is equal to the system's internal energy plus the product of its pressure and volume.
- In a system enclosed so as to prevent matter transfer, for processes at constant pressure, the heat absorbed or released equals the change in enthalpy.
So, the right choice is: The total heat content of the system.
Answer:
Explanation:
3.
Knowns: 100mL of solution; concentration of 0.7M
Unknown: number of moles
Equation: number of moles = volume * concentration
Plug and Chug: number of moles = 100/1000 * 0.7 = 0.07 mole
Final Answer: 0.07mole
2.
Knowns: 5.50L of solution; concentration of 0.400M
Unknown: number of moles
Equation: number of moles = volume * concentration
Plug and Chug: number of moles = 5.5 * 0.4 = 2.20 mole
Final Answer: 2.20 mole
Answer:
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Explanation:
Answer:
2.36 g of solute
Explanation:
Note: I assume that the problem is asking to find the grams of solute, since the grams of solution are already given (17.0g).
A solution consists of two substances: a solute and a solvent. In particular:
- The solute is the substance that is dissolved in the solvent (generally, the solute is in solid form)
- The solvent is the substance making the majority of the solution, and in which the solute is dissolved (generally, the solvent is in liquid form)
In this problem, we know that the total mass of the solution (solute + solvent) is
And we know that the percentage of solute in the solution is
Therefore, the mass of the solute can be written as
And substituting the mass of the solution, we find: