Determine the number of grams of nitrogen gas present in a 5.00-L cylinder at 4.00 x 103 mm Hg and 23.0°C. 15.2 g 30.3 g O 389 g 2.30 × 104 g O 75.0 g

Q: 9. If you pour 60 grams of KCl into 100 g of water at 70°C, and stir vigorously, which type of…

A: 9. Given information,   Mass of KCl = 60 g   Mass of water = 100 g   Temperature = 70oC

Q: 9. a. Calculate the pH of a solution that is 1.00 M HNO₂ (Ka = 4.00 x 10-4) and 1.00 M NaNO₂.

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A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

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Q: 7. When nitromethane, CH3NO2 (molecular mass = 61.05 g/mol) is burned the following reaction occurs:…

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Q: Number 7

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A: If you are mentioned number 11. So that I am answered that one question only.

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A: Dear student I have given answer to your question in the image format.

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Q: Number 9

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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.