A dental office buys high-strength die stone in bulk to save money. The container is left opent I the air for weeks. On mixing some stone to pour an impression for a crown, the material is very slow to set. What is the likely cause?​

Anurse is assessing a client who receives monthly injections of cyanocobalamin. which of the following findings indicates a therapeutic effect of the medication? a. absence of hand tremors b. hematocrit 45% c. potassium 3.8 meq/l d. improved appetite