How many liters of 2M solution can be made using 500. grams of KI?

The molar mass of KI is 166 grams per mole.

To solve this we simply use a quick dimensional analysis

We need to cancel everything but Liters so we multiply:

1/2 L/mol x 1/166 g/mol x 500 g = 1.50 L

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

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