When making sweet tea , McDonald’s adds sugar while the tea is hot. The sugar is added at this step so that the tea can be as sweet as possible. What type of solution is this?

Explanation:

The solutions that contain the maximum amount of solute that can be dissolved at the given temperature (and pressure). are called saturated solution.

The term saturated means that the solution cannot dissolve more solute at the given conditions of temperature and pressure.

The solubility of solutes are reported in tables or graphs.  They tell the amount of solute (usually in grams) that can be dissolved at different temperatures in an amount of solvent or solution (usually in 100 grams of solvent).

The solutions that have less solute that they can dissolve are named unsaturated. And those solutions that contain more dissolved solute than what they can dissolve (an unstable condition) are called supersaturated. Normally, a supersaturated solution will not hold that amount of solute for long because even a small movement will produce the precipitaion of part of the solute, bringing the solution to the saturation point.

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

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explanation: