How many moles of butane (C4H10(9)) were combusted in the presence of excess oxygen gas if 47.5 L of water vapour at STP is collected? Hint: Write a balanced chemical reaction equation first. Do not show your work in the space provided. Record only your final answer with the correct number of significant digits and the proper units. Answer:

Q: A student creates a solution of 0.20 M HC₂H₂O2 solution. Question #1: What is the pH of the solution…

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Q: What is the hydronium (H3O+) concentration of a solution with a pH of 1.60?

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Q: a) Using either a flying wedge projection or Fischer projection, draw a chiral, secondary alcohol…

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Q: What would the hydroxide ion concentration be if the hydrogen ion concentration was 1 x 10-3 M?

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Q: A sample of O2 gas was collected over water at a total pressure of 620 mm Hg and 25 degrees c.  The…

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Q: How many moles of Na2CO3 are there in 10.0 L of 2.00 M solution? Show a clear solution.

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Q: What are the products of the following reaction? O OH OH concentrated HI and and and and HO K HO

A: -> In presence of HI ether can break and form alcohol and alkyl iodide .

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Q: D Question 5 An alcohol can be converted to an alkene by treatment with a strong acid, such as…

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Q: 10) Calculate K. Cu(OH)2(aq) = Cu2+ (aq) + 4 NH3(aq) = Cu(NH3)4²+ (aq) Cu(OH)2(aq) + 4 NH3(aq) A)…

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Q: Problem 1. Redox reactions save lives! Airbags in automobiles are inflated with nitrogen gas…

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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.