10. What are shared in covalent bonds?* Cations Protons Electrons Anions 11. What type of reaction does the equation describe? LICIO2 --> LICI + O2 * Synthesis Double Replacement Single Replacement Decomposition 12. Molybdenum has a molar mass of 95.94 g/mol. How many moles are in 150.0g of Molybdenum?* 0.1563 mol 0.6396 mol O 1.563 mol 6.396 mol

10. What are shared in covalent bonds?* Cations Protons Electrons Anions 11. What type of reaction does the equation describe? LICIO2 --> LICI + O2 * Synthesis Double Replacement Single Replacement Decomposition 12. Molybdenum has a molar mass of 95.94 g/mol. How many moles are in 150.0g of Molybdenum?* 0.1563 mol 0.6396 mol O 1.563 mol 6.396 mol

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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PARMICLES UNITS 3. How many moles are in 1.838 liters of nickel, Ni? MOLES LITERS by 22.4L MOLES 4. How many moles are in 1.20x10* atoms of nickel? xby 6.02 10 ATOMS MOLICULES +by 4.02 x 10 PARTICLES LUNITS 5. If 13.19 moles of nickel are needed to be used to make joint replacement materials, how many grams of nickel is needed? CHAMS MOLAR MASS *by MOLAR MAS MOLES 6. Ifyou have 7.5x105 atoms of nickel, how many moles do you have? by 6.02 x 10 + by 6.02 x 10 ARTICES 22
Multiple choice questions 8 to 13
1. How many moles of nitrite ions are present in a sample that contains 2.81 moles of copper(II) nitrite, Cu(NO2)2? _____ moles NO2- 2. How many moles of Cu(NO2)2 are present in a sample that contains 6.50 moles of nitrite ions _____ moles Cu(NO2)2
PLEASE ANSWER IT ALL NO NEED TO EXPLAIN JUST CHOOSE THE LETTER 1. The equation for the synthesis of ammonia is N 2 + 3H 2 à 2NH 3 . How many moles of H 2 are needed to produce 6 mol NH 3 ? a. 4 b. 6 c. 8 d. 9 2. What mass of copper is produced when 3.8 g of iron reacts with excess copper(II) sulphate according to the equation Fe + CuSO 4 à FeSO 4 + Cu? a. 6.4 g b. 4.3 g c. 3.3 g d. 3.8 g 3. If 16.4 g Na 2 CrO 4 are combined with 26.2 g AgNO 3 in a double-replacement reaction, what will be the limiting reactant? a. Na 2 CrO 4 b. AgNO 3 c. NaNO 3 d. Ag 2 CrO 4 4. Magnesium reacts with hydrochloric acid according to the following equation: Mg + 2HCl à MgCl 2 + H 2 . If 0.30 mol Mg reacts, how many molecules of HCl will also react? a. 2.0 x 10 24 b. 1.8 x 10 23 c. 3.0 x 10 23 d. 3.6 x 10 23 5. If 3.0 L CH 4 are burned according to the equation CH 4 + 2O 2 à CO 2 + 2H 2 O a. 3.0 L. b. 44 L. c. 132 L. d. 6.0 L.
1. Define these words in simple terms: oxidation, reduction.2. In the iron ore known as hematite, the formula is Fe2O3. What is the percent by mass of iron in the sample?
Complete, balance, and identify the reaction type for each of the following chemical equations. 1. _C,H, + _co, + _H,0 Туре: 2. _AIBr, + K,SO, KBr + Al,(SO.), Туpе: 3. What is the theoretical yield of Cu(No,), when 86.4g Cu is reacted with 223g HNO, according to the equation? 3 Cu + 8 HNO, - 3 Cu(NO,), + 2 NO + 4 H,0 What are the limiting and excess reactants? What mass of the excess reactant remains?
Mass of salicylic acid = 2.15 g, volume of acetic anhydride = 5 mL, weight of filter paper = 0.35 g, weight of filter paper + aspirin = 2.85 g, MM of aspirin 180.16, MM of salicylic acid 138.12. Determine the percent yield
A chemist will use a sample of 30 g of ethanol (CH3CH2OH) in an experiment. In one to two sentences, make and justify a claim about the number of moles of ethanol the chemist will use
72.691g 84.321g FeSO4 + Potassium phosphate à Iron (II) phosphate + K2SO4 Convert the given amount of each reactant to the moles of each reactant
Which of the following mole ratios are written correctly for this chemical reaction? Select all that apply
4. A 100.0-g sample of an unknown hydrate (formula weight 234.0 g/mol) contains 31.4 g of water (formula weight 18.02). How many moles of water are there per mole of hydrate? of
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