Directions: Choose the letter that corresponds to the best answer.(For #1-3) Mr Wangxian installed a pneumatic piston near his door that is triggered tolock the door in case of an attack and placed 13.0 grams of NaN3 in the empty piston. Itis powered by the reaction below:2 NaN3 (s) → 2 Na (9) + 3 N2(g)1. How many moles of NaN3 was available for the reaction? (Molar mass of NaN3 is65 g/mol)A. 0.2 molB. 0.3 molC. 0.1 molD. 0.4 mol2. Assuming that all of the NaN3 reacted, how many moles of nitrogen gas wasformed?A. 0.2 molC. 0.1 molB. 0.3 molD. 0.4 mol3. Assuming that all of the NaN3 reacted and the volume occupied by the solidsodium is negligible, what is the final volume of the piston?7A. 6.27 LC. 6.72 LB. 7.26 LD. 2.76 L4. 22.4 L of compound A was measured at STP after a gaseous reaction, howmany moles of A was in the sample?C. 10 molD. 1.0 molA. 0.1 molB. 0.01 mol(For #5-7) Acetylene (C2H2) is formed by the reaction of water with calcium carbide,according to the following equation:CaC2 (9) + 2 H2O )→ Ca(OH)2 (aq) + C2H2 (g)Mr Xiyao was told to prepare 10 L (at STP) of acetylene in the laboratory.5. How many moles of acetylene should Ms Xiyao produce?C. 0.464 molA. 0.644 molB. 0.446 molD. 4.064 mol6. How many moles of CaC2 is needed to produce 10 L of acetylene? A.0.644 molC. 0.464 molB. 0.446 molD. 4.064 mol7. How many grams of CaC2 must Ms Xiyao prepare? (Molar mass of CaC2 is 64g/mol)A. 68.2 gВ. 62.8 gC. 28.6 gD. 26.8 g

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Answered: 4. 22.4 L of compound A was measured at…

4. 22.4 L of compound A was measured at STP after a gaseous reaction, how many moles of A was in the sample? A. 0.1 mol C. 10 mol B. 0.01 mol D. 1.0 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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