2) For the BOD measurement routine, 3 mL of a wastewater was added to a BOD bottle (300 ml) and
the clean water was added to fill up the bottle. The
dissolved oxygen DO was measured in this bottle as
9.4 mg/L and then the bottle was incubated for 5
days. The DO measured after 5 days was 2.3 mg/L.
The BOD of the wastewater (in mg/L) was (rounded to
1 decimal place).
2points​

Consider three unlabeled bottles, each contain small pieces of one of the following metals. - magnesium - sodium - silver the following reagents are used for identifying the metals. - pure water - a solution of 1.0 molar hcl - a solution of concentrated hno3 (a) which metal can be easily identified because it is much softer than the other two? describe a chemical test that distinguishes this metal from the other two, using only one of the reagents above. write a balanced chemical equation for the reaction that occurs. (b) one of the other two metals reacts readily with the hcl solution. identify the metal and write the balanced chemical equation for the reaction that occurs when this metal is added to the hcl solution. use the table of standard reduction potentials (attached) to account for the fact that this metal reacts with hcl while the other does not. (c) the one remaining metal reacts with the concentrated hno3 solution. write a balanced chemical equation for the reaction that occurs. (d) the solution obtained in (c) is diluted and a few drops of 1 m hcl is added. describe what would be observed. write a balanced chemical equation for the reaction that occurs.

What type of electromagnetic radiation has a shorter wavelength than blue light

How many moles of carbon dioxide will form if 2.5 moles of c3h8 is burned