How to dissolve PbS (lead II sulfide)?

I need a solvent which it can dissolve PbS (lead II sulfide) well. I can't use nitric acid because it destroy S2- in PbS.

05 June 2019 2,217 7 View

Conditions of using photometry analysis?

What is the concentration range that can be used in photometry?

10 November 2018 609 0 View

Prepare phenolphtalein 0.05%?

I read some papers about preparing phenolphtalein 0.05%. Add 0.05g phenolphtalein in a beacher and add 50mL ethanol 95% and 50mL distilled water. But I can exchange acohol content (such as 100mL...

10 November 2018 7,173 3 View

How to determine content of Ca2+ in CaHPO4.2H2O?

I can use HCl to dissolve CaHPO4.2H2O (CaHPO4.2H2O was created from Ca(OH)2 and H3PO4 with ratio 1:1, respectively) and use photometry method to determine PO43-. But Ca2+, how to determin Ca2+? If...

10 November 2018 869 3 View

Solubility of silicate?

Why Na2O.2SiO2 doesn't dissolve in water, otherwise 3Na2O.2SiO2 can dissolve in water?

09 October 2018 4,504 2 View

Mechanism of solar cell?

I don't understant about mechanism of solar cell. When light come in p-n juction is electron and hole will be separated at n semiconductor, p semiconductor, depletion region or all

08 September 2018 7,814 7 View

What is the mechanism of inhibiting ions in metallic incorrosion?

I read a article about metallic incorrosion (mild steel) by using new generations of phosphate based on anticorrosion pigments. This article have mentioned the modified pigments appeared to...

05 June 2018 2,508 0 View

Why does blocking with my immunogenic peptide cause nuclear fluorescence in ICC?

Hi all, I am validating a polyclonal antibody raised against human ANT4, through WB and ICC. In most of my controls, the antibody shows very little off-target binding, but when I pre-incubate the...

03 March 2021 5,999 3 View

Does any one know how i can prepare liver tissue with transmission electron microscope with good fixation?

i have problem in preparation of liver tissue with bad cell organelles and how i can adjust osmolarity

03 March 2021 8,890 1 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Does Napabucasin soluble in dichloromethane and in ethanol?

I need to prepare a solution of Napabucasin (inhibitor of cancer cell stemness) in dichloromethane. The drug is expensive, so maybe somebody already tried to do it. If it is soluble, what is the...

02 March 2021 9,945 3 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View

Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 View

What element is driving the different slop in the low frequency tail?

My study consists simple corrosion inhibitors in salty brine. Right now I just fit my circuit with randles with CPE. Just wondering how the slop can given more info of the experiment. Or any...

01 March 2021 6,474 3 View