Scientific notation allows us to work more easily with cumbersome numbers
The correct answer is the element FE hope i helped the Champion out!
Here is the correct answer of the given question above about the crucible. The crucible and its contents gain mass when heated because <span>it contains a compound that forms a stable and solid oxide. Hope this is the answer that you are looking for. Have a nice day!</span>
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Answer:</h3>
Solution A
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Explanation:</h3>
Saturation describes the amount of solute that a solvent has or can be absorbed/dissolved.
Types of Saturation
There are 3 different descriptions that can be used to explain how much solute has been dissolved.
- Undersaturated - Undersaturated solutions have the ability to hold more solute. This means that the solubility has not been reached yet.
- Saturated - Saturated solutions hold as much solute as the solubility allows. This means that the amount of solute added to the solution is equal to the solubility.
- Supersaturated - Supersaturated solutions hold more solute than the solubility allows for. This means that the amount of solute added is greater than the solubility.
Finding Unsaturated
Out of the 4 options given, only in option A is the amount of solute less than the solubility. In the other options, the amount of solute is either equal to or greater than the solubility.
Option D: 246 K
According to ideal gas law:
...... (1)
Here, P is pressure, V is volume, n is number of moles, R is Universal gas constant and T is temperature of the gas. The value of R is 
.
Number of moles of gas are 0.750 mol, volume of cylinder is 6850 mL and pressure of gas is 2.21 atm.
First converting volume from mL to L
Thus,
6850 mL=6.850 L
Putting the values in equation (1),
Rearranging
,
Therefore, temperature of the gas is 246 K.
