A compound is composed of two elements and has the formula X2Y3. The molar mass of X is 26.98 g/mol and 1.1009 mol of the compound contains 165.32 g. What is the most likely identity of compound X2Y3, by formula and name?

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth

How is the way a mixture is combined different from how a compound is combined?

Which description best characterization the motion of particles in a solid