Answered: both chemical and flame tests are used…

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter15: Solutions

Section: Chapter Questions

Problem 1CR

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Similar questions

When calcium carbonate is heated strongly, it evolves carbon dioxide gas. CaCO3(s)CaO(s)+CO2(g) 25 g of CaCO3 is heated, what mass of CO2would be produced? What volume would this quantity of CO2 (CU at STP?
Without consulting your textbook, list and explain the main postulates of the kinetic molecular theory for gases. How do these postulates help us account for the following bulk properties of a gas: the pressure of the gas and why the pressure of the gas increases with increased temperature; the fact that a gas tills its entire container; and the fact that the volume of a given sample of gas increases as its temperature is increased.
If an electric current is passed through molten sodium chloride, elemental chlorine gas is generated as the sodium chloride is decomposed. :math>2NaCl(1)2Na(s)+Cl2(g) at volume of chlorine gas measured at 767 mm Hg at 25 °C would be generated by complete decomposition of 1.25 g of NaCl?
Solid potassium oxide and gaseous water are produced by the decomposition of solid potassium hydroxide KOH. Write a balanced chemical equation for this reaction.
What are the distinguishing features of gas and vapor poisoning compared with other types of poisoning such as metals, solutions, or dust... and the most obvious signs to recognize when poisoning them?
Solid potassium chlorate, KCIO3, decomposes upon heating to form potassium chloride and oxygen gas. Write a balanced chemical equation for the reaction. The volume of oxygen that would form at standard temperature and pressure if 0.456 g KCIO3 decomposes is mL. Answer must be verified.
Write chemical formula of the gas .
ebixoiC 4 During the production of ammonia, hydrogen is produced from the steam reforming of methane. In the reformer methane gas is reacted with excess water and the resulting mixture is found to contain 12 kg of hydrogen and 15 kg water. Assuming all the methane is reacted calculate the amount of water used.
Using the procedure above, please annswere the below question: a. In step 1 of the experiment, you sanded the magnesium strip before weighing (and reacting) to remove any magnesium oxide. If you skipped step 1 and left a MgO film on the strip, would the calculated molar volume of hydrogen gas collected be higher or lower than if the weighed mass were all magnesium metal? Explain which experimental data would be incorrect for the measured mass. b. The gas collected in the eudiometer was a mixture of hydrogen gas and water vapor. How is the calculated molar volume affected if the partial pressure of water vapor collected is not accounted for? Explain.
A student has a tube containing solid ammonium carbonate. He opens the tube and wafts the gases towards his nose. A strong odor is detected. Write the balanced chemical equation for this reaction involving solid ammonium carbonate. Include states of matter. One of the products is ammonium hydrogen carbonate.
Zn reacts with hydrochloric acid to give zinc chloride and hydrogen gas. A sample of 5 g of a Zn mineral requires 10 mL of commercial HCl of 37% purity, by weight and density 1.19 g/mL, to react completely. Find: a) The mass of zinc contained in the sample. b) The purity of the zinc mineral. c) The pressure exerted by the hydrogen gas collected in a 2 L container and at a temperature of 20ºC.please use conversion factors and mark the solutionsThe solutions should be : 3,92 g; 78,4%; 0,72 atm.I just dont know how to do it
Zn reacts with hydrochloric acid to give zinc chloride and hydrogen gas. A sample of 5 g of a Zn mineral requires 10 mL of commercial HCl of 37% purity, by weight and density 1.19 g/mL, to react completely. Find: a) The mass of zinc contained in the sample. b) The purity of the zinc mineral. c) The pressure exerted by the hydrogen gas collected in a 2 L container and at a temperature of 20ºC.please use conversion factors and mark the solutions

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both chemical and flame tests are used to positively identify carbon dioxide gas. true false