An object of indeterminate size marking a
location in space

Point

Explanation:

An object of indeterminate size which marks a location in space is called a point.

A point in geometry has no dimension unlike a line which is one dimensional. In essence, like other bodies, we cannot specify any of the width, length or height of a point.

On the other hand, a line is a connects two or more points and it is one dimensional. They usually have lengths.

Therefore, an object of indeterminate size which marks a location in space is a point.  

c (diamond),

sio2 (quartz)

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer