Ethylene glycol is used as automobile antifreeze

Reference no: EM13226859

1. ethylene glycol is used as automobile antifreeze.  6.38 g of this compound contains 2.47 g of carbon and 0.620 g of hydrogen.  The rest is oxygen.  The molar mass is 62.0 g/mole.  What are the empirical and molecular formulas of ethylene glycol?
2. aspirin is produced in a student lab.  One mole of salicylic acid (MM 138 g/mole) reacts with one mole of acetic anhydride (MM 102 g/mole), producing one mole of aspirin (MM 180 g/mole) and one mole of acetic acid, commonly known as vinegar (MM 60 g/mole).  The student reacts 2.054 g of salicylic acid with 5.00 mL  (density 1.00 g/mL) of acetic anhydride.  After heating, crystallizing, and filtering, the collected product weighed 2.189 g.
a. write a balanced chemical equation in words.
b. Which one is the limiting reagent?
c. How much is the theoretical yield?
d. How much is the percent yield?
3. a cup of ice cream contains 6.0 g of protein, 36 g of carbohydrate, and 8.0 g of fat.  Approximately how many hours of walking would be required to burn up the energy taken in by eating a cup of ice cream?
Protein = 4 kcal/g
Carbohydrate = 4 kcal/g
Fat = 9 kcal/g
Walking burns 300 kcal/hr

Reference no: EM13226859

Questions Cloud

Cause of rising global inequality to globalization : What are the arguments attributing the cause of rising global inequality to “globalization”? What are the arguments attributing the cause of rising global inequality to “technology”? What are the arguments attributing the cause of rising global inequ..

Child labor benefit or hurt the us economy. : how would banning the export of products known to be produced using child labor benefit or hurt the us economy

Powers of congress except the power : All of the following are implied powers of Congress EXCEPT the power to

Interactionism relate to cultural diversity and diet : How does Functionalism, Conflict Theory, and Interactionism relate to cultural diversity and diet?

Ethylene glycol is used as automobile antifreeze : Ethylene glycol is used as automobile antifreeze. 6.38 g of this compound contains 2.47 g of carbon and 0.620 g of hydrogen. The rest is oxygen. The molar mass is 62.0 g/mole. What are the empirical and molecular formulas of ethylene glycol?

Concerning the regression line-slope of the regression line : Which one of the following statements concerning the regression line is true? The slope of the regression line, b1, is at or near which of the following values? The intercept of the regression line, b0, is at or near which of the following values?

Describes a new health care system : Develop a unique proposal that describes a new health care system. Consider the current U.S. health care system’s strengths, weaknesses, and challenges.

Identify two types of diverse learners : Identify two types of diverse learners. Search for effective teaching practices or the two types you picked on the internet. List the web addresses. List effective teaching practices for both types.

Describes a new health care system : Develop a unique proposal that describes a new health care system. Consider the current U.S. health care system’s strengths, weaknesses, and challenges.

User Account

All Pages