How many people(from neighbourhood) did develop chronic diseases during this same(last 3 months) period?

How many people(from neighbourhood) did suffer from acute diseases during the last three months?

Why did people also suffer from various disease after consuming fishes living in local water reservoir?

Two gram of hydrogen diffuse from a container in 10 minutes. How many grams of oxygen would diffuse through the same container in the same time under similar conditions?

Nitric acid, HNO_3 is a colourless, corrosive liquid used in the manufacture of Nitrogen fertilizers and explosives. In an experiment to develop new explosives for mining operations, a 28.5 g sample of HNO_3 was poured into a beaker. How many moles of HNO_3 are there in this sample of HNO_3 ?

And finally, what is the total number of people suffering from chronic diseases in your neighbourhood?

Two Australians made a discovery that a bacterium, Helicobacter pylori, was responsible for peptic ulcers. Robin Warren, a pathologist from Perth, Australia, saw these small curved bacteria in the lower part of the stomach in many patients. He noticed that signs inflammation were always present around these bacteria. Barry Marshal, a young clinic fellow became interested in Warren's findings and succeeded in cultivating the bacterium from these sources. In treatment studies, Marshall and Warren showed that patients could be cured of peptic ulcer only when the bacteria were killed off from the stomach. Thanks to this pioneering discovery by Marshall and Warren, peptic ulcer disease is no longer a chronic, frequently disabling condition, but a disease that can be cured by a short period of treatment with antibiotics. For this achievement, Marshall and Warren received the Nobel Prize for Physiology and medicine in 2005. How can peptic ulcer be cured? In which branches of science did the scientists get Nobel Prize?

How many pieces each of length (3)3/4 m can be cut from a rope of length 60 m?