QUESTION 3: Show your solutions for all questions below: 3a. Which mass is greater? 34.0 g of C6H1206 or 0.450 mole of C6H1206? 3b. Which mass is greater? 6.02 x 1024 C6H1206 molecules or 0.180 kg of C6H1206? CGH1206 is the molecular formula of glucose. 3c. Which has the greater mass? 0.50 mole of salt (NaCl) or 0.30 mole of baking soda (NaHCO3)? (

QUESTION 3: Show your solutions for all questions below: 3a. Which mass is greater? 34.0 g of C6H1206 or 0.450 mole of C6H1206? 3b. Which mass is greater? 6.02 x 1024 C6H1206 molecules or 0.180 kg of C6H1206? CGH1206 is the molecular formula of glucose. 3c. Which has the greater mass? 0.50 mole of salt (NaCl) or 0.30 mole of baking soda (NaHCO3)? (

Introductory Chemistry: A Foundation

8th Edition

ISBN:9781285199030

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter8: Chemical Composition

Section: Chapter Questions

Problem 120AP

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Concept explainers

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.

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Uranium is used as a fuel, primarily in the form of uranium(IV) oxide, in nuclear power plants. This question considers some uranium chemistry. (a) A small sample of uranium metal (0.169 g) is heated to between 800 and 900 C in air to give 0.199 g of a dark green oxide, UxOy How many moles of uranium metal were used? What is the empirical formula of the oxide, UxOy? What is the name of the oxide? How many moles of UxOy must have been obtained? (b) The naturally occurring isotopes of uranium are 234U, 235U, and 238U. Knowing that uraniums atomic weight is 238.02 g/mol, which isotope must be the most abundant? (c) If the hydrated compound UO2(NO3)2 z H2O is heated gently, the water of hydration is lost. If you have 0.865 g of the hydrated compound and obtain 0.679 g of UO2(NO3)2 on heating, how many waters of hydration are in each formula unit of the original compound? (The oxide Ux, Oy is obtained if the hydrate is heated to temperatures over 800C in the air.)
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