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How many atoms are there in one mole of CH OH? A.6 atoms B. 6.0 x 10 atons C. 12.0 x 10 atoms D.3.6 x 10* atoms

How many atoms are there in one mole of CH OH? A.6 atoms B. 6.0 x 10 atons C. 12.0 x 10 atoms D.3.6 x 10* atoms

Chemistry
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
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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First Year Secondary First Term 2019/ 2020 CHEMISTRY MODEL QUESTIONS Choose the correct answer for each question, 1. How many atoms are there in one mole of CH OH? A.6 atoms B. 6.0 x 10 atons C. 12.0 x 10 atoms D.3.6 x 10 atoms NH: + 02 NO, - H;0 Balance the equation given above. Then, find the number of moles of oxygen gas O, involved in the reaction. A. I mole B. 3 moles C. 4 moles D.7 moles 3. When iron pyrite (FeS2) is heated in air, the process is known as "roasting". It forms sulfur dioxide and iron (III) oxide as follows: FeS, - 0, = SO,+ Fe;O3 Balance the given equation, and then, choose the corrct choice of the number of moles for the reactants and products. A. 4, 2, 8, 7 respestivei uo / B. 2, 4, 7, 8 réspectively C. 2, 11,7, 8 respectively D.4, 11, 8, 2 respectively 4. Doctars recommend taking vitamin (C) in winter days, How many moles of Vitamin C. (C.H,O), are there in 528 g of Vitamin C? given that: A.2 moles (C =12, H=1. o= 16) B.2,75 moles 4 moles D.5 moles
Transcribed Image Text:First Year Secondary First Term 2019/ 2020 CHEMISTRY MODEL QUESTIONS Choose the correct answer for each question, 1. How many atoms are there in one mole of CH OH? A.6 atoms B. 6.0 x 10 atons C. 12.0 x 10 atoms D.3.6 x 10 atoms NH: + 02 NO, - H;0 Balance the equation given above. Then, find the number of moles of oxygen gas O, involved in the reaction. A. I mole B. 3 moles C. 4 moles D.7 moles 3. When iron pyrite (FeS2) is heated in air, the process is known as "roasting". It forms sulfur dioxide and iron (III) oxide as follows: FeS, - 0, = SO,+ Fe;O3 Balance the given equation, and then, choose the corrct choice of the number of moles for the reactants and products. A. 4, 2, 8, 7 respestivei uo / B. 2, 4, 7, 8 réspectively C. 2, 11,7, 8 respectively D.4, 11, 8, 2 respectively 4. Doctars recommend taking vitamin (C) in winter days, How many moles of Vitamin C. (C.H,O), are there in 528 g of Vitamin C? given that: A.2 moles (C =12, H=1. o= 16) B.2,75 moles 4 moles D.5 moles
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