Ethane gas is held in a constant volume container at a pressure of 225 kPa, and the temperature decreases from 125 °C to 21.0 °C. What is the new pressure?

Q: Identify the functional groups in the structure shown (there can be more than one): ab Aromatic…

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Q: A student measures out a 50.3 g sample of sodium hydroxide. What is this mass in kilograms (kg)?

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Q: a) Calculate the reaction quotient, Q.

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Q: 1 Which compound contains chlorine with the lowest oxidation number? A NaCl B HOCI C Cl₂O7 D CIF

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Q: 1. Consider the molecules drawn below. Circle the molecules that could exist in nature? Explain your…

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Q: What is the pH of a 0.876 MHNO3 solution? 0.420 Ob. 0.057 OC. 0.535 Od. 0.244 a.

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Q: Suppose Brian is in the market for a used textbook and the campus bookstore is having a sale. If the…

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Q: QUESTION 11 Determine the molar solubility of MX (Ksp 8.0x109) in 0.012 M NaCN. The metal ion M*…

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Q: Define the following terms: (i) Director (i) Order parameter

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Q: Quvon (aq) 2 Fecs) + 3 F₂ cg) → GF - (99) + 2 Fe ² + in which reaction, which is oxidising the agent…

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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.