Question 7 (5 points) (08.02 MC)
What is the mass of Naci required to make 140 grams of a 12% solution of Nach in water? (5 points)
12 grams

14 grams
Oc
12 grams
Od
18 grams

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

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

Which of the following is not a true statement about dwarf planets? a the kuiper belt contains comets, asteroids, and dwarf planets. b ceres is a dwarf planet located in the kuiper belt. c the largest known dwarf planet in the solar system is named eris.