External link to When an amount of a radioactive isotope is allowed to decay
External link to Create awareness and educate children between the age group of 10-14 years old in water resources and pollution control in Singapore
| No Comments When an amount of a radioactive isotope is allowed to decay, it will follow a predictable pattern of decrease over time known as its half-life. The half-life is the time required for one half of the original sample to decay away. In this question, we are looking at a sample with a 10 year half-life that has been allowed to decay for […]
External link to What must be the NH3 concentration in a 0.100 M AgNO3 solution to prevent precipitation of AgCl when enough NaCl has been added to raise its concentration to 0.500 M?
| No Comments Water resources and pollution control are two important factors in ensuring the sustainability of Singapore’s environment. In order to create awareness and educate children between the age group of 10-14 years old about these matters, it is important to provide them with a comprehensive knowledge base that covers both topics. This can be accomplished through educational programs, activities, and workshops conducted by […]
| No Comments The solubility of AgCl in aqueous solutions is determined by the equilibrium between solid silver chloride (AgCl) and its ionic species. In a 0.100 M AgNO3 solution, when enough sodium chloride (NaCl) has been added to raise the concentration to 0.500 M, it is necessary for there to be enough NH3 present in order for the precipitation of AgCl to be prevented. […]