Density is a physical property that relates the mass of a substance to its volume. a. calculate the density, in g/ml , of a liquid that has a mass of 0.155 g and a volume of 0.000235 l. b. calculate the volume in milliliters of a 4.71-g sample of a solid with a density of 3.63 g/ml. c. calculate the mass of a 0.293-ml sample of a liquid with a density of 0.930 g/ml.

A) 0.660 g/ml

B) 1.297 ml

C) 0.272 g

Explanation:

Every substance, body or material has mass and volume, however the mass of different substances occupy different volumes.  This is where density appears as a  physical characteristic property of matter that establishes a relationship between the mass of a body or substance and the volume it occupies:

(1)

Knowing this, let's begin with the answers:

Here the mass is and th volume

Solving (1) with these values:

(2)

(3)

In this case the mass of a sample is and its density is .

Isolating from (1):

(4)

(5)

(5)

In this case the volume of a sample is and its density is .

Isolating from (1):

(6)

(7)

(8)

wavelength divides in half and speed stays the same.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)