What volume would 25.0g of Oxygen occupy at STP

The forensic technician at a crime scene has just prepared a luminol stock solution by adding 15.0 gg of luminol into a total volume of 75.0 mLmL of H2OH2O.

Which of the following is a macronutrient? Select one: a. nitrogen b. manganese c. zinc d. boron

An acorn falls from a tree. Which of the following statements is true? The force of gravity is acting on the acorn. The force of gravity is the only force acting on the acorn. A frictional drag force is acting on the acorn.

What pattern appears when going down the list alkanes

Match the effects on the concentration of SO2 gas when the following changes occur after initial equilibrium has been established in this system: 2SO2 (g) + O2 (g) 2SO3 (g) + 46.

In the chemical laboratory why do scientists use a mortar and pestle

Which feature is found only in prokaryotic cells A) plasmid B) flagella C) cytoplasm D) cell membrane

True or False? Not all compounds will dissolve in water.

Consider the elements bromine and chlorine; which element has a larger ionic radius? -chlorine -bromine

How many electrons can the first energy level hold