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A 45.0 g sample of water contains 11.2 mg of a toxin.  What is the concentration of this toxin in ppm? (Hint: ppm = mg/kg)

Is the final American Chemical Society (ACS) exam on Friday (Jun. 9, 2021) at 8:00 AM?

Consider the following equation:  Zn(s) + 2 HCl(aq) → ZnCl2(aq) + H2(g) A 50.0 mL solution of 2.5 M HCl that completely reacts with zinc metal will produce _______ moles of ZnCl2.

What is the molar concentration of NH4+ ions in a 3.1 M solution of (NH4)2SO4? (Hint: Assume a 1 L solution.)

A gas sample in a container has a pressure of 2.4 atm at a temperature of 0 °C.  If the volume of the gas doesn’t change, what is the pressure after the system is heated to 100 °C? (Hint: K=°C+273)

A client with an upper gastrointestinal disorder is experiencing seeping of liquid stool, abdominal distention, nausea, and vomiting. What may the client be experiencing?

After the nurse has performed a focus wound assessment on the client which should be included in the documentation?  (Select all apply) 

What is the net ionic equation for the reaction: Zn(s) + 2 HNO3(aq) → H2(g) + Zn(NO3)2(aq)

What is the net ionic equation for the reaction: Cu(s) + 2 HNO3(aq) → H2(g)  + Cu(NO3)2(aq)

An aqueous solution is found to have [H+] of 2.0×10-4 M. What is [OH-] in this solution?