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Category : Chemistry

Chemistry Questions from elementary level up to Intermediate (+2) level.

Question
What is hydronium ion concentration of a 0.02 M solution of Cu+2 solution of copper (II) Perchlorate? The acidity constant of the following reaction is 5×10^(-9). See reaction in attachment.
solved 0
Chemistry Animesh Kedavat 3 months 1 Answer 119 views 1

Question
Gastric juice contains about 3.0g of HCl per litre. If a person produces about 2.5 litre of gastric juice per day, how many antacid tablets each containing 400 mg of Al(OH)3 are needed to neutralize all the HCl produced in ...
solved 0
Chemistry Nageshwar Rathore 6 months 1 Answer 142 views 0

Question
Experimentally it was found that a metal oxide has formula M0.98O. Metal M, is present as M2+ and M3+ in its oxide. find the fraction of the metal which exists as M3+.
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Chemistry Yogita Gupta 6 months 1 Answer 237 views 0

Question
A vessel contains 1.6 g of dioxygen at STP. The gas is now transferred to another vessel at the constant temperature, where pressure becomes half of original pressure. Calculate the volume of new vessel and number of molecules of dioxygen.
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Chemistry Aman Adarsh 7 months 1 Answer 116 views 1

Question
4 g of NaOH is dissolved in 36 g of H2O. Calculate the mole fraction of each component. Also determine the molarity of the solution if specific gravity of solution is 1 g/ml.
solved 0
Chemistry Aman Adarsh 7 months 1 Answer 127 views 0

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