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Chemistry question help? A mixture of helium, nitrogen and oxygen has a total pressure of 752 mmHg. The partial pressures of helium and nitrogen are 234 mmHg and 197 mmHg respectively. Chemistry Online Materials - chemistry definitions | chemical ... Chemistry has provided answers to various questions. The quantitative measurement of the number of basic constituents of matter i.e. atoms and molecules and their dependence on the mass of the given matter is well explained by chemistry. Basic Chemistry Questions & Answers - GKToday Click Here to Visit all updated Chemistry Questions 1. Which among the following methods can be used to remove the permanent hardness in water due to calcium or magnesium. GK, General Studies, Optional notes for UPSC, IAS, Banking, Civil Services. 15 Organic Chemistry Interview Questions and Answers

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