Which answer choice correctly lists only elements? A
Cl, Na, CH3, Ne
B
Mg, NO2, Mg, B
C
H2O, Li, N, I2
D
N2, O2, Al, Zn
Group of answer choices

A

If a plot weight (in g) vs. volume (in ml) for a metal gave the equation y= 13.41x and r^2=0.9981 what is the density of the metal?

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.