In kingdom of Bahrain,
According to "Bahrain National Profile to Assess the National Infrastructure for Chemical Safety",
There is no provision specific to regulation of DDT is provided for in the Public Health Act; probably because Bahrain has not been using this insecticide for a while. This may be the case with other Acts that regulate the use of insecticide.
In 1982, voluntary action was undertaken by the electricity departments in the country to substitute the oil containing PCBs from the electric capacitors and transformers of the main stations. Those capacitors and transformers were sent to the UK for treatment, and replaced by new capacitors and transformers containing mineral oil or silicon oil. A survey was planned to identify other sources of PCBs, but it was not implemented due to shortage of manpower.
(PAHs) constitute a large class of organic compounds containing two or more fused aromatic rings. They are well-known environmental pollutants at low concentration and are included in the European Union and US Environmental Protection Agency (EPA) priority pollutant lists due to their mutagenic and carcinogenic properties. PAHs are generated by incomplete combustion of organic materials arising in part from natural combustion such as forest fires and volcanoes. Industrial production, factories, transportation, and waste incineration also generate significant levels of PAHs.
Pors Compourel ) Aldrin Chlordane Chlordecon e Dieldri Heptachlor Hexabromobiphenyl HC B Mirex PCB S Toxa phewe PA Hs PCpD/Fs ich these Compound used in kingdom or bahrian??Please help Pors...
please help for a final. wd V, and V b Notal Analysis OIzv V22 +3.2, vo/Hs b)V2 tt.2/4j vo//s d) Vb0S3 volts 2 214 volt s e) v 3.5 Volts V2 -9.22 Volts e) non of thea
please help NHz CH3 and (a) Hc. CH₃ (b) HNO3 H2SO4 .CH₃ and Azc. W-CH₃ HNO3 H2SO4 H3 CH3 NaBity E) O СН3 NaBHY
Question 2 Salicylic acid, HC,H,0, is a chemical compound used in many facial cleansing products. Figure 2. Structure of Salicylic Acid a) Identify the ionizable hydrogen (HA or Hg) with the correct pk НА lonizable Hydrogen pK, 2.97 HA 13.7 :91 3 19- 10 b) The solubility of salicylic acid in water is 0.210-96 HC,HsOs by mass. What is the pH of an aqueous solution of salicylic acid at saturation? (Assume the density of the solution is 1.00 g/mL). 2-U...
Can you please help me answer Task 2.b? Please show all work. fs=44100; no_pts=8192; t=([0:no_pts-1]')/fs; y1=sin(2*pi*1000*t); figure; plot(t,y1); xlabel('t (second)') ylabel('y(t)') axis([0,.004,-1.2,1.2]) % constrain axis so you can actually see the wave sound(y1,fs); % play sound using windows driver. %% % Check the frequency domain signal. fr is the frequency vector and f1 is the magnitude of F{y1}. fr=([0:no_pts-1]')/no_pts*fs; %in Hz fr=fr(1:no_pts/2); % single-sided spectrum f1=abs(fft(y1)); % compute fft f1=f1(1:no_pts/2)/fs; %% % F is the continuous time Fourier. (See derivation...
please help b) What is the Index of hydrogen deficiency of a compound with the following formula, CH.Br 3pts 2pts c) Give a possible structure for this compound? a) Complete the following reactions by providing missing product(s), reactants or 2. reagents. 3 pts each Он CH сн. .CH3 b) он
Please help! 4. Suppose Compound B is the conjugate base of Compound A. Calculate the approximate concentration of Compound A that must be present in a 0.042 M solution of Compound B to produce a pH of 4.96. The K. for Compound A is 1.8 x 109. Show your work. Round your final answer to the nearest hundredth decimal place. (5pts) 5. Consider the structure below. Then using the empty boxes, answer parts (a)-(e). HO (a) (1 pts) Draw a...
I need help with this question, please. 14. Which combin of alkyl bromide and carbonyl compound can be used to prepare the (s) shown by the Wittig reaction? CH3CH2CH2Br CH3CH2 CHCH3 Br CH3CH2Br CH3CH2 Br d) 1, 2, and 3 e 1, 2, 3, and 4 c) 2 and 3 b) 2 and 4 1 and 2 15, What gas is evolved in a Wolff-Kishner reduction of a carbonyl group?
please help. question 62 s is first order in the reac ich reaction is fastest if the reactants are the same? All be reactant abled. -Br₂(g) → and [Br.] ed [NO] The fol reaction ] is increased 14.59. Each of the following reactions is for and second order overall. Which res initial concentrations of the reactants reactions are at 298 K. 2. C10 (8) + O2(g) → CIO(g) + O. = 3.0 X 10-cm/(molecules) b. CIO.(g) + NO(g) → NO2(g)...
Could I please have some help with these? A11) Ephoton = Ebind + Ekin hc/delta = Ebind + 0.5mv^2/ I subbed in values provided and rearranged to find velocity.. It gave me a negative value. (Ebind = 206000 J, h= 6.6261x10^-34, c= 2.99x10^8, delta = 215 x 10^9m) A19) & A33) How would I go about these? Thank you Question A11. In a photoelectric effect experiment, what is the velocity of an electron emitted from a caesium (Cs) surface (Ebind...
matlab help, please my code is here: %% exercise2 %a Fs = 8000; % sampling frequency tn = 0:1/Fs:0.005; % here, bit duration is 0.005s instead of 1/300s phi1 = 0; phi0 = 0; % phases of the sinusoid x1 = cos(2*pi*1650*tn + phi1); % tone for binary 1 x0 = cos(2*pi*1850*tn + phi0); % tone for binary 0 xx = [x1, x0]; % FSK signal for ¡°1,0¡± tt = [tn, tn + 0.005]; % time figure(1) plot(tt, xx); %...