How many moles are in 15.0 grams of calcium?
0.374 moles
2.67 moles
601.5 moles
2.40 x 1025 moles

Describe in detail the melting point behavior of the 80: 20 benzoic acid-mandelic acid mixture

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

What is the formula for the compound dinitrogen pentoxide? a. n4o5 b. n5o4 c. n4o6 d. n5o2 e. n2o5