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How many grams would 8.6 moles of sulfuric acid (H2SO4) weigh? Question 10 5.2E23 molcculcs of hand sanitizer. cthanol (C2H5OH) is how many moles?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter4: Types Of Chemical Reactions And Solution Stoichiometry

Section: Chapter Questions

Problem 40E: High-density lipoprotein (HDL) cholesterol is the good cholesterol because adequate levels reduce...

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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.

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There are five hydrocarbon compounds (compounds of C and II) that have the formula C6H14. (These are isomers; they differ in the way that C and H atoms are attached. Chapter 23) All are liquids at room temperature but have slightly different densities. (a) You have a pure sample of one of these hydrocarbons, and to identify it you decide to measure its density. You determine that a 5.0-mL sample (measured in a graduated cylinder) has a mass of 3.2745 g (measured on an analytical balance). Assume that the accuracy of the values for mass and volume is plus or minus one ( 1) in the last significant figure. What is the density of the liquid? (b) Can you identify the unknown hydrocarbon based on your experiment? (c) Can you eliminate any of the five possibilities based on the data? If so, which one(s)? (d) You need a more accurate volume measurement to solve this problem, and you redetermine the volume to be 4.93 mL Based on this new informationwhat is the unknown compound?
Convert to moles. (a) 128.3 g of sucralose, C12H19O8Cl3, the active ingredient of the artificial sweetener SplendaTM (b) 0.3066 g of uric acid, C5H4N4O3, the compound that can cause gout and arthritis (c) 2.664 g of cadmium(ll) telluride used to coat solar panels
Suppose that the atomic mass of C-12 is taken to be 5.000 amu and that a mole is defined as the number of atoms in 5.000 kg of carbon-12. How many atoms would there be in one mole under these conditions? (Hint: There are 6.0221023 C atoms in 12.00 g of C-12.)
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Q9- Which contains more carbon, 6.01 g of glucose, C6H12O6, or 5.85 g of ethanol, C2H6O?
Which of the following does NOT describe 44.0 g of propane, C3H8? a) the amount of propane that contains 8.0 g of hydrogen b)the amount of propane that contains 8 x 6.02 x 1023 hydrogen atoms c) the amount of propane that contains 36.0 g of carbon d) 44.0 x 6.02 x 1023 molecules of propane
1. How many moles are in each of the given samples? a) 2.50 mL of water (assume density of water is 1.00 g/mL) b) 10.00 mL of acetone (assume density of acetone is 0.7899 g/mL) c) 23.00 mL hydrochloric acid (12N) d) 33.25 g acetylferrocene (MW of acetylferrocene is 228.07 g/mol)
a) What is the mass, in grams, of 5.000 moles of carbon atoms? b)What is the average mass, in grams, of a)one helium atom? b)one potassium atom? c. How many sodium atoms are there in 6.00 moles of sodium? d. a)How many moles of sodium atoms are there in100.0g of sodium?b)How many sodium atoms are there in100.0g of sodium? e. Calculate the number of moles in 50.7grams of hydrogen.
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What is the percentage by mass of a silver ring that has a mass of 12.0 g and contains 11.1 g of pure silver?
Vitamin C has a formula of C6H8O6, calculate the number of vitamin molecules present in a 0.250g of pure vitamin C
How many grams would be 4.87 more of C5H12?