To get the gold out of the solution sodium dicyanoaurate is reacted with zinc. What mass of zinc is needed to extract all the gold. What mass of gold will be extracted?
2 Na(Au(CN),) + Zn → | Na,(Zn(CN),) + 2 Au

Drug abuse will not lead to physical and psychological dependence. true or false ?

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided

Abike ride event is 30 miles. a first aid tent is put at the 3/4 mark of the course. how many miles from the starting point is the first aid tent?