Refer to the chemical.equation below to answer questions 16- 202Mg + O, →2MgO16. How many moles of O is needed to form 2 moles of MgO?2.А. 1В. 2С. 3D. 617. How many moles of Mg are needed to give 6 moles of MgO?В. 218. How many moles of oxygen molecules reacted to 2 moles of Mg?В. 319. In any chemical reaction, the quantities that are preserved are theA. 3С.6D. 4A. 6С. 1D. 2A. mass and molesC. number of moles and the volumes.20. To change from moles of a given substance, to moles of the substance sought, one uses theA. balanced equation coefficients for the substancesB. ratio of the molar masses of the two substances.B. mass and number of atomsD. number of atomsC. subscripts in the formulas for the substances.D. all the above

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2Mg + O, 2MgO -> 16. How many moles of O is needed to form 2 moles of MgO? А. 1 В. 2 С.3 D. 6 17. How many moles of Mg are needed to give 6 moles of MgO? А. 3 18. How many moles of А. 6 В. 2 С.6 D. 4 oxygen molecules reacted to 2 moles of Mg? В. 3 С. 1 D. 2 19 In anv ch

2Mg + O, 2MgO -> 16. How many moles of O is needed to form 2 moles of MgO? А. 1 В. 2 С.3 D. 6 17. How many moles of Mg are needed to give 6 moles of MgO? А. 3 18. How many moles of А. 6 В. 2 С.6 D. 4 oxygen molecules reacted to 2 moles of Mg? В. 3 С. 1 D. 2 19 In anv ch

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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Section 5.9 The Mole and Chemical Equations 11. In the following equations consider the bold formulas. The molar ratio between the two bold formulas can be expressed in two ways. Write them both. a. S(s) + O2(g) → SO2(g) b. Sr(s) + 2H2O(1) → Sr(OH)2(s) + H2(g) c. 4NH3(g) +5O2(g) → 4NO(g) + 6H2O(g) d. CaO(s) + 3C(s) → CaC2(s) +CO(g)
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In The reaction below, if 5 moles of N2 reacts with 9 moles of H2, Which of the following is correct? ( Balance the equation first) N2 + H2 --> NH3 a. All of the N2 reacts and 10 moles of NH3 will form. b. All of both reactant will be used up and 5 moles of NH3 will form. c. 14 moles of NH3 will form d. All of the H2 reacts and and N2 is in excess.
How many grams of N2 are needed to completely (stoichiometrically) react with 222 g of Br2 ? N2 + 3 Br2 2 NB13 + 44.0 kJ The molar mass of Br2 is g and the molar mass of N2 is mol Br2 (2.22 x 102 g Br2)(- mol Br2 g Br2 mol N2 mol Br2 (-- -) = mol N2 mol Br2 g N2 mol N2 (-- -) = |v g N2 mol N2 а. 1 b. 2 С. 3 d. 4 е. 5 f. 253.719 g. 3.38 х 100 h. 3.26 x 103 i. 44.0 j. 1.33 x 102 k. 9.77 x 103 I. 4.44 x 102 m. 6.66 x 10² n. 500.0 o. 556 р. 90.0 q. 3.2852 r. 159.81 s. 28.013 t. 1.750 u. 0.8750 v. 13.0 w. 0.46306 х. 1.3892 у. 24.5 z. 38.5 аа. 2.190 bb. evolved Cc. absorbed dd. exothermic ee. endothermic
C6H6 + H2 → C6H14 How many hydrogen atoms are on the product side of the equation? А. 1 В. 4 С. 6 D. 14 What coefficient should fill the blank in front of H, in order to balance the equation? А. 2 В. 4 С. 7 D. 14
Given that you have 14.5 moles of N2, how many moles of H2 are theoretically eeded to produce 22.5 moles NH3 according to the O1. 43.5 moles H2 O 2. 15.0 moles H2 reaction 3. 489 moles H2 4. 21.8 moles H2 N2 +3 H2 → 2 NH3? 5. 33.8 moles H2 6. 78.8 moles H2 7. 2.33 moles H2 OCO O O
1. Potassium superoxide, KO:, is used in rebreathing masks to generate oxygen according to the reaction below. If the mask contains 0.155 mol KOs and 0.103 mol water. +KO2(6) + 2H2O0)→ +KOH(-) + 302g) a. How many moles of oxygen can be produced? b. What is the limiting reagent?
wHEN POTASSIUM CHLORATE KCLO3 IS HEATED STRONGLY, IT BREAKS DOWN RELEASING OXYGEN GAS AND LEAVING BEHIND A THERMALLY STABLE(I.E., HEAT-INSENSITIVE) SOLID RESIDUE OF ANIONIC POTASSIUM CHLORIDE KCI. a. HOW MANY MOLES OF 02 CAN BE PRODUCEA BY LETTING 12.00 MOLES OF KCLO3 REACT? B. HOW MANY MOLES OF KCL CAN BE PRODUCED BY LETTING 4 MOLES OF KCLO3 REACT?
8. Use the following equation for the following: ni 916 2siuosiom ynsm woll Mg3N2 + H₂O → Mg(OH)2 + NH3 20000.0 6 a. Balance the equation. IX IX. b. How many moles of NH3 are produced when 0.0425 moles of Mg3N2 are reacted? c. How many grams of H₂O are needed to form 6.31 x 10-5 moles of Mg(OH)2 ? d. How many molecules of H₂O are needed to react with 0.525 lbs Mg3N₂? e. How many kilograms of Mg(OH)2 are produced when 7.23 x 1027 molecules of NH3 are also produced? f. How many grams of Mg3N2 are needed to make 4.18 lb Mg(OH)2 ?
Name:Tashina & 3-28-22 Period: Stoichiometry - Mole to Mole Ratio **Success Criteria: I can calculate the weight of molecules if given the number of molecules or vice versa. Directions: Solve the following mole ratio problems. 1. N +_3 _H,→ 2_NH, How many moles of Hydrogen are needed to completely react with two moles of Nitrogen? 2. Co KCIO, → C6 КСІ + 9 02 How many moles of Oxygen are produced by the decomposition of six moles of Potassium Chlorate? a moles 02 3. Zn + HCl → ZnCl, + H2 How many moles of Hydrogen are produced from the reaction of three moles of Zinc with an excess of Hydrochloric Acid? 4. C;Hg + O2 CO3 + H,0 How many moles of Oxygen are necessary to react completely with four moles of Propane (C;Hs)? 5. KĄPO, + Al(NO;); KNO, + AIPO4 How many moles of Potassium Nitrate are produced when two moles of Potassium Phosphate react with two moles of Aluminum Nitrate? Cu + AGNO, - Cu(NO3)2 + Ag BONUS: a. How many moles of Cu are needed to react with 3.50 moles of AgNO,? b. If…