A typical helium weather balloon has a volume of 75.0 liters at 25oC and 720 mm Hg.  Suppose the balloon rises to an altitude where the pressure is 0.100 atm and the temperature is -20oC.  What is the volume of the weather balloon under these conditions?

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Q: Which Lewis structure has no lone pairs on the central atom? SeBr4 SC1₂ Asl3 SiS₂

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Q: Match the structures to its IUPAC name. 5 OH OH 잇엇 Br ☆ 2,4-dibromo-3,5-dimethylhexane…

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Q: Question 5 When the following redox equation is balanced in acidic solution, how many H* are there…

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Q: Which of the ff is a glycoside?

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.