When excess nitric acid reacts with 1.70 g of iron, 842 ml of hydrogen gas is collected over water. If the barometric pressure is 753 mmHg and the temperature of the water is 34°C, what is the calculated value of R. in atmL/molK? (Water vapor pressure at 34°C-39.90 mmHg) Fels) +HNOslac) →FelNO)2 +H@ O 0.0846 O 0.0948 0.0794 0.0897

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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.