A certain skin lotion is a fine mixture of water and various oils. This lotion is cloudy and cannot be separated into oil and water by filtration or centrifuge. What type of mixture is it? A.
colloid
B.
suspension
C.
solution

colloid

Explanation: The colloid is a mixture in which particles from one substance is suspended into particles of another substance. The particles of the colloids remain dispersed and they do not settle at the bottom of the container. The mixture appear in cloudy appearance. The particles of the mixed substances cannot be separated from each other in a colloidal mixture.

On the basis of the above description, and comparing the features of the skin lotion this can be said that the lotion is colloidal mixture.

Answer for number 1: In normal form it would be 130. In scientific notation it would be 1.3 x 10^2 So, the number of significant figures is 2.

Answer for number 2: In a real number form it would be 0.5473. In scientific notation it would be 5.473 × 10^-1 . And the number of significant figures is 4.

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Explanation: