Identify the spectator ions in the following molecular equation. (NH4)2CO3(aq) + Sr(NO3)2(aq)  →  2NH4NO3(aq) + SrCO3(s) 

In the GI tract, barium sulfate can produce an insoluble precipitate with calcium to form a:

True/False.   ALL radiopaque contrast media are derivatives of tri-iodinated benzoic acid. 

Write the complete ionic equation for the following molecular equation.  Include phases.    Pb(NO3)2 (aq) + 2 NaBr (aq)  →  PbBr2 (s) + 2 NaNO3 (aq)

The molarity (M) of an aqueous solution containing 52.5 g of sucrose, C12H22O11, in 35.5 mL of solution is __________.  

Silicon nitride is a very hard, high-temperature-resistant ceramic used as a component of turbine blades in jet engines. Upon reaction of 38.6 g solid silicon with excess nitrogen, 44.8 g of silicon nitride was obtained according to the balanced equation: 3 Si(s)+2 N2(g)⟶Si3N4(s)   What is the percent yield of silicon nitride?  (If you wish, show your work for possible partial credit.)

NMES for spasticity reduction frequently includes which of the following:

Barium sulfate is which of the following?   

What is the chemical formula of barium sulfate?

After you complete and balance the equation below, write the net ionic equation.  Include phases.            HClO (aq) + Sr(OH)2 (aq)