This is a lab question, referring to zinc and iodine reacting to form zinc iodide. If at the end of the reaction some of the unreacted zinc escaped from the evaporating dish, the mass of the dish plus the unreacted zinc would be lower than it should be. Would this cause the calculated mass ratio, g I/g Zn, to be higher or lower than the value predicted? I think higher, am I correct? Why or why not?

This is a lab question, referring to zinc and iodine reacting to form zinc iodide. If at the end of the reaction some of the unreacted zinc escaped from the evaporating dish, the mass of the dish plus the unreacted zinc would be lower than it should be. Would this cause the calculated mass ratio, g I/g Zn, to be higher or lower than the value predicted? I think higher, am I correct? Why or why not?

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

Chapter3: Stoichiometry

Section: Chapter Questions

Problem 25Q: The atomic masses in die periodic table are relative masses and average masses. Explain.

See similar textbooks

Similar questions

The atomic masses in die periodic table are relative masses and average masses. Explain.
natural rubidium has the average mass of 85.4678 AMU and is composed of isotopes Rb 85 (mass = 84.9117) and Rb 87. The ratio of Rb 85 to Rb 87 in natural Rb is 2.591. What is the mass of Rb 87 in AMU?
In neutron logging the atomic particles called neutrons from sonde are sent through the formation. On collision of neutron with hydrogen, the hydrogen slows them down. When detector records slow neutrons, it means no hydrogen is present. a. True b. False
Using your determined equation for the mass lost graph, what is the expected mass lost if you had a sample of 2.32g and a sample of 5.36g to begin with?
2 Al + 3 F2 ------> 2 AlF3 What mass of F2 (MW= 38.00 F2) reacts with 150. g of Al (MW= 26.98 Al) 150. g Al times (1._ over 2._) times (3._ over 4._) times (5._ over 6._) = 317 g F2
What is relative abundance
Determine the missing element ---- 3516S----> -10e + ?
142Sm ---->42 He + ? 1)the chemical symbol found on the periodic table is ? 2) the number of protons for the product is ? 3) the number of neutrons of the product is ?
Mass of magnesium before is 0.33g Mass of magnesium after is 0.49 g Identify major sources of error in this experiment. Explain how the magnesium: oxygen ratio would be affected by each error you identify. https://youtu.be/R9bUO70UfN8
At some point in the future, nuclear chemists have synthesized two stable isotopes of bohrium. Under these conditions, the average atomic mass of bohrium is 270.5294 amu. If bohrium-269 has atomic mass of 269.0129 amu and bohrium 271 has an average mass of 270.9717 amu, what is the percent abundance of bohrium 269? (Express your answer as a percentage to two decimal places).
At the end of the experiment you calculate the atomic mass of the alkali metal to be 41.02. You assume that the expected alkali metal was potassium (Ar = 39.10 g mol-1 ) What is the percentage error in your result? Give your answer to 2 significant figures. (Please type answer no write by hend)
Instructions: Make sure to make your explanations precise and show your complete solutions. Analyze situational problem/s involving chemical reactions and apply the Law of Mass Conservation. Jan Baptista van Helmont (1579–1644) recorded the mass of a young willow tree and the soil in which the tree was planted. Five years later he found that the mass of soil had decreased by only 0.057 kg, while that of the tree had increased by 75 kg. During that period, he had added only water to the bucket in which the tree was planted. Helmont concluded that essentially all the mass gained by the tree had come from the water. Was this a valid conclusion? Explain. ______________________________________________________________________________________________ ______________________________________________________________________________________________ ______________________________________________________________________________________________