carbon dioxide

Exploring physical and chemical changes : In the following scenarios, tell whether the change being described is a physical or a chemical change, and explain the reasoning behind your answer.

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Exploring physical and chemical changes In the following scenarios, tell whether the change being described is a physical or a chemical change, and explain the reasoning behind your answer. A carbonated beverage container is opened, producing a fizzing sound and carbon dioxide (CO2) bubbles. Dry ice (solid CO2) is taken from a freezer and placed … Read more

A cell with a normal concentration of 2% starch is placed in a solution of 28% starch. Starch molecules are too large to diffuse through the cell membrane. Which direction will the water move ?

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Transport Practice Use your notes or textbook to answer the following questions. 1. Transport across the cell membrane in which substances move from high concentration to low concentration without the expenditure of energy. 2. Transport across the cell membrane that requires energy to move substances against the concentration gradient. 3. is how small nonpolar substances … Read more

Data Collection, Organization and Analysis: use the excel file provided by the instructor to create appropriate graphical displays

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Data Collection, Organization and Analysis Air pollution represent significant challenges to the health and quality of life not just in NYC but around the globe. This project assignment requires data gathering, organization, and analysis in which you will use hand-held air meters to collect data around the LaGuardia campus. This event presents an opportunity to … Read more