TiF4 is being added to a mixture. What mass of TiF4 is required in order to ensure that 18.04g of Ti will be added to the mixture? Show using dimensional analysis
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TiF4 is being added to a mixture. What mass of TiF4 is required in order to ensure that
18.04g of Ti will be added to the mixture? Show using dimensional analysis
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- 9. When a volatile liquid is completely vaporized in an Erlenmeyer flask, the volume of the flask (and thus the vapor) can be determined by one of two methods. One method is by filling up the whole flask with water and then finding out the water volume by pouring the water into a measuring cylinder over multiple times and read off its volume. • From the topics we learnt this semester, what do you think can be the other method of determining the volume of water in the flask? Which method do you think is more accurate? Why? (Suggest the possible methods of separation of liquid–gas mixtures. Explain each method with an example. Explain and elaborate.Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of hydrated copper(II) chloride, in order to determine the value of x. The following results were obtained: mass of crucible = 16.221 g mass of crucible and hydrated copper(II) chloride = 18.360 g mass of crucible and anhydrous copper(II) chloride = 17.917 g At. Mass: Cu 63.55 Cl 35.45 H 1.008 O 16.00 1. Calculate the number of moles of H2O (answer must be expressed to 5 decimal places)
- Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of hydrated copper(II) chloride, in order to determine the value of x. The following results were obtained: mass of crucible = 16.221 g mass of crucible and hydrated copper(II) chloride = 18.360 g mass of crucible and anhydrous copper(II) chloride = 17.917 g At. Mass: Cu 63.55 Cl 35.45 H 1.008 O 16.00 1. Calculate percentage of H2O (answer must have 4 sig. fig)Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of hydrated copper(II) chloride, in order to determine the value of x. The following results were obtained: mass of crucible = 16.221 g mass of crucible and hydrated copper(II) chloride = 18.360 g mass of crucible and anhydrous copper(II) chloride = 17.917 g At. Mass: Cu 63.55 Cl 35.45 H 1.008 O 16.00 1. Calculate the number of moles of anhydrous copper(II) chloride (answer must be expressed to 5 decimal places)Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of hydrated copper(II) chloride, in order to determine the value of x. The following results were obtained: mass of crucible = 16.221 g mass of crucible and hydrated copper(II) chloride = 18.360 g mass of crucible and anhydrous copper(II) chloride = 17.917 g At. Mass: Cu 63.55 Cl 35.45 H 1.008 O 16.00 1. Calculate percentage of anhydrous copper(II) chloride (answer must have 4 sig. fig)
- Write a balanced equation for the combustion of gaseous methane (CH4), a majority component of natural gas, in which it combines with gaseous oxygen to form gaseous carbon dioxide and gaseous water. Express your answer as a chemical equation. Identify all of the phases in your answer. ΑΣφ OA chemical reaction does not occur for this question.Suppose you are performing an experiment in which you are insructed to mix 10 g of a unknown solid 50 mL of unknown liquid. Upon mixing the two substances you find that thhe solid disappears. If you are to presume this change was merely physical in nature. How would you go about seperating the two components to recover as much of starting materials as possible?40 X x 2008 xample 8. The laboratory reagent, concentrated nitric acid, is generally 69 per cent by mass of nitric acid (HNO3). Calculate volume of this solution which contains 19.9 g of HNO3 (density of concentrated nitric acid solution is 1.41 g cm -3). If th I of II
- Which of the following best define systems thinking in chemistry? Systems thinking is learning about chemistry within real-word contexts. Systems thinking focuses on the interdependence between chemistry components, as well as the influence of chemistry on other systems. Systems thinking is a way of thinking about chemistry systematically.12. Pure chlorine enters a process. By measurement it is found that 2.4 kg of chlorine pass into the process every 3.1 minutes. Calculate the molar flow rate of the chlorine in kg mol/hr.1.) In the Dumas method for determining the molar mass of an unknown volatile liquid, a sample of a volatile liquid that boils below 100 oC is vaporized in a boiling water bath and the mass of the vapor required to fill the flask is determined. The following data was collected: Flask Volume 100.0 +100.0 + 79.6 mL = 279.6 mL Mass of Flask + Cap 143.85 g Mass of Flask + Condensed Liquid 144.95 g Mass of Condensed Liquid 1.10 g Temperature of Water Bath (oC) 84.1 oC Barometric Pressure (atm) 0.985 atm a.) What is the molar mass of the unknown? b.) What will its temperature be when the pressure is 1.20 atm and the volume is 250.0 mL?
