Other Chemistry Answers

A sample NaCl was assayed using Volhard method. A 1.652 g NaCl was dissolved in 150 mL distilled water. An aliquot of 10 ml was treated using 25 mL of 0.1010 N AgNo3 and 10 ml of 0.0985 N NH4SCN. Calculate the % NaCl in the sample..

Activity I.I Making Your Own Periodic Table

Make your own periodic table using the hypothetical elements that

are given clues. Explain the word/s that will t formed if you arrange

the symbols of the elements correctly.

a. P and Pr both have one electron each. Pr has a bigger atomic size.

b. Od, Ri, and E are in the same series as P, C, and I. In terms of atomic

size, P is the biggest while C is the smallest. E is a metal while I is a non-metal. Od is smaller than Ri in atomic size. c. O has a bigger atomic size than E in the same group. Y is also a bigger atom than C in the same group. R is more nonmetallic than

Pe but more metallic than Ti.

Activity I.I Making Your Own Periodic Table

Make your own periodic table using the hypothetical elements that

are given clues. Explain the word/s that will t formed if you arrange

the symbols of the elements correctly.

a. P and Pr both have one electron each. Pr has a bigger atomic size.

b. Od, Ri, and E are in the same series as P, C, and I. In terms of atomic

size, P is the biggest while C is the smallest. E is a metal while I is a non-metal. Od is smaller than Ri in atomic size. c. O has a bigger atomic size than E in the same group. Y is also a bigger atom than C in the same group. R is more nonmetallic than

Pe but more metallic than Ti.

Research the definition and process involved in Biodegradation and Biotransformation. Explain how these processes help the lessen the environmental risks and dangers of insect repellents.

A 0.05 g of a certain transition metal compound was reacted with 1, 10 phenanthroline to form a deep purple complex of Iron II phenanthroline [Fe(phen)2] in a total solution volume of 250 ml. The absorbance of the deep purple complex after measurement in a colorimeter in a 2.0cm cuvette was 0.45 at a maximum wavelength of absorption of 510nm.

(i) What is the concentration of the deep purple complex?

(ii) Find the number of moles of the complex in the 250 ml solution volume.

(iii ) What % of the Iron II phenanthroline complex is formed from the transition metal

compound.

(iv) What is the % transmittance of the purple complex?