Name 3 commercial indicators

The label on a bottle of “organic” liquid fertlizer concentrate states that it contains 7.40 grams of phosphate per 100.0 mL and that 16.0 fluid ounces should be diluted with water to make 32.0 gallons of fertilizer to be applied to growing plants. What is the phosphate concentration in grams per liter in the diluted fertilizer? (1 gallon= 128 fluid ounces)

True or False: Water is considered a chemical element.

What volume of water must be added to 32.7 mL of sulfuric acid solution in order to reduce its concentration to 1/10 its original concentration?  Provide answer in mL to 3 significant figures.

Calculate the eq per liter of 0.321g Na2CO3Na2CO3 when it is mixed in a 250ml solution.(MM Na2CO3= 105.78) Report your answer to 3 significant figures. Do not include the unit when writing your answer.

The pH of blood is 7.35. This pH is maintained by a natural buffer system of H2CO3 and HCO3. What is the ratio of [ HCO3]/[ H2CO3 ] at this pH if the K, is 4.2 x 107? Give your answer in 2 significant figures.

How many significant figures is present in the following measurement?   volume of 0.1004 M BaCl2 titrant added = 12.67 mL

65

Pp

N 1. NaOEt 2. H₂O® N=