Two different sub-atomic particles are described below: particle x: no charge particle y: outside the nucleus which statement is true? a. x is a neutron and y is an electron. b. x is a neutron and y is a proton. c. x is a proton and y is an electron. d. x is an electron and y is a proton.

The answer is: A. X is a neutron and Y is an electron.

Explanation:

The sub-atomic particles inside an atom are:

Since the particle X in the problem has no charge, this particle is a Neutron. And, as the particle Y is outside the nucleus, it has to be an electron. So the right answer is A.

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation: