For C2H5OH (liquid) So = 161 J/K. mol; for C2H5OH (gas) So = 282.6 J/K. mol. What is ΔS if 92 g of C2H5OH is evaporated?

a) 111.5 J/K

b) 243.2 J/K

c) 121.6 J/K

d) 2.31 J/K

e) - 121.6 J/K

Describe the chemical reaction that generates heat in the human body

A researcher studying the nutritional value of a new candy places a 4.40-gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.87 °C. If the heat capacity of the calorimeter is 41.

What is the empirical formula of a compound that contains 40 percent carbon, 6.7 percent hydrogen, and 53.3 percent oxygen?

In order for a space shuttle to leave earth, it must produce a great amount of fuel. However, once in space, the shuttle needs very little fuel. It circles earth while gravity pulls it toward earth.

or? Enzymes in he digesive rac caalyze hydrolysis reacions? a. True b. False

Why is it an advantage for the graduated cylinder to be shaped with a lip at the top

What is the most common way to increase retenation of anlyates in gas choromatography analysis

What is an example of an atom

A compound of carbon and bromine contains 6.99% carbon and has a molar mass of 515.4 g/mol. What is the empirical formula of this compound? CBr2 C2Br C2Br3 C3Br6

Describe the particle that is emitted during alpha decay. How do you think an atom changes when it undergoes alpha decay?