. What are the types of attractive forces that can exist between the molecules of each of the following? HI , F2 , H2O
2. Draw formulas showing the covalent and ionic bonds of the following two compounds? CH3ONa, NH4Cl
explain the following statement a) for diels alder reaction a diene must be able to adopt a cis geometry b) low molecular weight ozonides cannot isolated easily c) alkenes are readily hydroxylated
Explain Ceramic matrix nanocomposites
Applications of hybrid organic nanocomposites
Explain types of hybrid organic nanocomposites
What is hybrid organic nanocomposites
Draw the resonance structures of cyanate ion. Out of them which one is less important
as a resonance structure and why?
POLYER LAB Chemistry 30
1. Use a graduated cylinder (or teaspoon)* to add 10 mL of tap water to a Dixie Cup. With a pen, mark the level of the water on the outside of the cup. Add an additional 10 mL of water to the cup and mark the water level. Repeat 2 times until a total of 40 mL has been added to the cup. Now dump out all the water. 2. Measure 10 mL of tap water into the Dixie cup and add 3-4 drops of food coloring. 3. Using the markings on the Dixie cup, add ~10 mL of Elmer’s white glue directly to the cup and mix (stir rod
or spoon) gently until the mixture has a uniform consistency. 4. Use a graduated cylinder (or 1⁄2 cup measuring cup) to measure 125mL of tap water in a beaker (larger plastic
container). an electronic balance, weigh boat (or wax paper) and a scoopula (or teaspoon), add 8.7 grams of Borax to the water. This is your saturated (6.5%) sodium tetraborate solution. solid is dissolved.
1. The food we eat is degraded, or broken down, in our bodies to provide energy for growth and function. A general overall equation for this very complex process represents the degradation of glucose (C6H12O6) to carbon dioxide (CO2) and water (H2O):
C6H12O6 + 6O2 → 6CO2 + 6H2O
If 968 g of C6H12O6 is consumed by a person over a certain period, what is the mass of CO2 produced?
2. Urea [(NH2)2CO] is prepared by reacting ammonia with carbon dioxide:
2NH3(g) + CO2(g) → (NH2)2CO(aq)+ H2O(l)
In one process, 849.2 g of NH3 are treated with 1223 g of CO2.
(a) Which of the two reactants is the limiting reagent?
(b) Calculate the mass of (NH2)2CO formed.
(c) How much excess reagent (in grams) is left at the end of the reaction?