Classify each substance as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous.  a. sweat    b. carbon dioxide    c. aluminum     

Deep Water Culture (DWC) is the most expensive and least common plant production method in aquaponics.

Describe the sanitation protocols necessary to maintain food safety in aquaponics systems. Why are these protocols critical?

Sodium bromide, used to produce silver bromide for use in photography, can be prepared as shown: Fe + Br2 → FeBr2 FeBr2 + Br2 → Fe3Br8 (unbalanced) Fe3Br8 + Na2CO3 → NaBr + CO2 + Fe3O4 (unbalanced) How many moles of iron are required to produce 16 moles of sodium bromide?

Which of the following compounds have covalent bonds? I: MgO                II:  CO                 III:  NaCN                            IV:  ZnF2                          V:  Cl2

Disposable gloves should be worn when handling fish or soil in aquaponics systems.

All fish species approved by state agencies are profitable and easy to raise in aquaponics systems.

What must be done before harvesting plants and vegetables in aquaponics?

Which of the following is NOT a recommended food safety practice in aquaponics?

A patient is prescribed 400 mg of penicillin to be given orally. The stock syrup on hand has a strength of 125 mg/5mL. How many ML’s of syrup should be given to the patient?  Round to the nearest whole number.