Zn + 2 hcl --> zncl2 + h2 how many moles of hydrochloric acid (hcl) are used (assume a complete reaction) if 8.3 moles of zinc chloride (zncl) are produced? a 8.3 mol zncl2 b none of these answers c 8.3 mol hcl d 4.15 mol hcl e 16.6 mol hcl

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

The same side of the moon always faces earth because the

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? (2 points) decreasing temperature decreasing pressure decreasing surface area decreasing solute concentration