2. Based on what you have learned so far, why is it necessary to stir the water and wait until the end of the video to read the dissolved oxygen? The stirring aerates the water, causing the oxygen to dissolve more easily in the water. The stirring causes oxygen molecules to leave. The stirring causes the H20 to break apart and release oxygen. The stirring causes hydrogen gas to mix with oxygen gas making water.

2. Based on what you have learned so far, why is it necessary to stir the water and wait until the end of the video to read the dissolved oxygen? The stirring aerates the water, causing the oxygen to dissolve more easily in the water. The stirring causes oxygen molecules to leave. The stirring causes the H20 to break apart and release oxygen. The stirring causes hydrogen gas to mix with oxygen gas making water.

World of Chemistry, 3rd edition

3rd Edition

ISBN:9781133109655

Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Chapter10: Energy

Section: Chapter Questions

Problem 8STP

See similar textbooks

Similar questions

Which gas is not associated with the formation of acid rain? NO2 CONO SO3
In Module #4, we discussed the role of chlorofluorocarbons (CFCs) in catalyzing the destruction of O3 in the stratosphere. One example of a CFC that is known to exasperate formation of the hole in the O3 layer is dichlorodifluoromethane (CF2Cl2). In the year 2000, this chemical reached its peak concentration of 2.2 x 10-11 M in the atmosphere. The destruction of CF2Cl2 can be approximated as a first-order process and the 1996 treaty on CFC emissions has eliminated its release into the atmosphere. Given that the rate constant for destruction of CF2Cl2 in the atmosphere is 0.009 yr-1, how long will it take for the concentration of CF2Cl2 to decline to 0.22 x 10-11 M?
When ozone levels in urban area reach unhealthy levels, residents are typically urged to avoid refuelingtheir cars during daylight hours. Explain how this might help to reduce smog formation?
4. Photochemical smog is a type of air pollution in the troposphere of our planet produced when sunlight acts upon motor vehicle exhaust gases to form harmful substances such as ozone (O3). For example, nitrogen dioxide (NO2) reacts with atmospheric oxygen (O2) in the presence of light to produce ozone (O3) and nitrogen monoxide (NO).
Which oxidant initiates most of the oxidation in the troposphere? O hydroxyl radical (OH) O hydroxide ion (OH-) O oxygen (02) O ozone (03)
2.) It’s a bad day in the lab! Two students are doing experiments. Each is 20 feet away from the professor. At the same time, each of them lets the same amount of a smelly gas into the room. One of them releases ammonia, NH3, and the other releases SO2. NH3 has a pungent odor, and SO2 smells like rotten eggs. The professor has no idea that this has happened, until she smell the first gas. Which chemical will the professor smell first? (NH3 or SO2) . If the professor starts to smell the first gas 42. seconds after the gas is released, how long will it take her to smell the second gas? sec. * Note: It is unsafe practice to work with these chemicals in an open lab.
Addition of which of the following reactants would lead to the formation of more hydrogen gas? magnesium water hydrochloric acid magnesium chloride.
NEED HELP! When potassium metal is placed in water, a large amount of energy is released as potassium hydroxide and hydrogen gas are produced in the reaction 2K(s) + 2H2O(l) → 2KOH(aq) + H2(g). Your lab partner says this is a redox reaction and a combustion reaction. Do you agree? Defend your answer by explaining whether or not it meets the requirements of each type of reaction.
Which process directly adds carbon into the atmosphere? CO2 OA. increasing plant populations OB. decreasing animal populations OC. burning fossil fuels forming sedimentary rock OD -0044 jpg
Match each pollutant with their final product in our atmosphere. > SO₂ NO₂ CO CH4 1. CO2 2. H₂SO4 3. HNO3
Select the atom that acts as the acid in the third step of the reaction. H × Selected Answer - Incorrect Η Η Η· H Η Η
Identify three sources of particulate matter found in air. Explain the difference betweenPM2.5 and PM10, in terms of size and health effects.