Category: Uncategorized

Which of the following population growth models could you use to model the below growth of COVID-19?

Your roommate is spinning the globe and says “Hey, I just noticed, it looks like there are rainforests at the same latitude in Africa as in South America. What a coincidence!” You congratulate your roommate for their keen observation skills and reply: Choose all the correct parts to include in your response: It’s colder at the equator because the sun hits at a more obtuse angle [ans1] Hot air readily absorbs moisture, then rises at the equator.  [ans2] As it increases in elevation, it decreases in pressure and then cools. [ans3] As this air cools, it dumps all of the moisture in the form of large amounts of precipitation. [ans4]

In class we discussed two perspectives on Lyme disease spread to humans. As part of this conversation we considered the “traditional” and the “dilution effect” perspectives. We also looked at a paper that described the traditional and the dilution effect perspectives using this figure. Which of the 4 scales of ecology would best describe this study? 

In osmosis:

What is the percent by mass of ethanol (C2H5OH) in a 1.5-m aqueous solution?

Which statement from the article is an opinion rather than a fact?

A liquid placed in a closed container will evaporate until equilibrium is reached. At equilibrium, which of the statements (A-D) is false?

When a 49.1-g sample of an unknown compound is dissolved in 500.g of benzene, the freezing point of the resulting solution is 3.77°C. The freezing point of pure benzene is 5.48°C and Kf for benzene is 5.12°C/m. Calculate the molar mass of the unknown compound.

What is the mole percent of ethanol (C2H5OH), which consists of 71.0 g of ethanol for every 16.7 g of water present?

What does the article suggest about the use of prescription drugs like Ritalin by people without ADHD?