Your friend challenged you to a race you know in order to beat him you must run 15 meters within 20 seconds in the northern direction what does your average velocity need to be to win the race .5 meters per second north
.75meters per second north
1.3meters per second north
300 meters per second north

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 volume of a 0.0606 m solution of strontium bromide is needed to obtain 0.340 mol of the compound? question 42 options: a)5.61 l b) 3.4 l c) 600 ml d) 1 l e) 178 ml

How many grams are in one mole of lead?