1. Sea water contains roughly 28.0 g of NaCl per liter. What is the molarity of sodium chloride in sea water?  2. What is the molarity of 245.0 g of H2SO4 dissolved in 1.00 L of solution?  3. What is the molarity of 5.30 g of Na2CO3 dissolved in 400.0 ml solution?  4. What is the molarity of 5.00 g of NaOH in 750.0 ml […]

Write the balanced chemical equation for the reaction taking place in the flasks for part 1.  From the mass of KHP, calculate the moles of KHP used for each of 3 trials.  Using the moles of KHP in each flask, use stoichiometry to calculate the moles of NaOH that were used to reach the equivalence point in each flask.  Finally, calculate the molarity of your […]

A plant manufacturing nails and screws uses a large pool (volume = 10,000 L) to collect and treat its residual waste water before discharging it in a nearby stream.  The manufacturing process makes use of a strong acid (HCl) and a weaker one (phosphoric acid, H3PO4; pKa1 = 2.148, pKa2 = 7.20, pKa3 = 12.15), before discharging them in the pool for treatment (neutralization).  Once […]

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Create an Outline Lab Report. This report will contain a title and the 5 elements of a lab report: Abstract, Introduction, Methods/Materials, Results, and Discussion. Our outline is going to be compiled of questions, instead of information. I understand that some of them might be repetitive, especially for Title and Introduction, and that’s ok. So for the 6 items I have listed above, you will […]

With the  beginning of summer in the northern hemisphere, people venture more outdoors to work, play and enjoy outdoor recreation.  This increase in outdoor time increases exposure to the sun’s radiation.  The text discusses how the ozone layer helps protect biological life from excess exposure.  Sunscreen is an added layer of protection.   Investigate a common sunscreen, (perhaps your favorite one).  And tell us the following,:  1) […]

A plant manufacturing nails and screws uses a large pool (volume = 10,000 L) to collect and treat its residual waste water before discharging it in a nearby stream.  The manufacturing process makes use of a strong acid (HCl) and a weaker one (phosphoric acid, H3PO4; pKa1 = 2.148, pKa2 = 7.20, pKa3 = 12.15), before discharging them in the pool for treatment (neutralization).  Once […]

One method used to store energy during times of low demand is by pumping water uphill into a reservoir. When energy demand exceeds the output produced by power plants, the water is released, moves downhill, and is converted into electricity by a turbine. During a 142.0 minute long period of low usage, 62.0 MW is used to pump water up an elevation of 56.7 m […]

Patient malnutrition is a very real and serious matter; it can lead to a worsening of the patient’s condition, a longer hospital stay, or even be as serious as to contribute to patient death. There are a variety of diseases, conditions, or situations in which patient malnutrition may occur; the malnutrition may develop while in the hospital, but it can also develop outside of the […]

Humans have engaged in psychoactive drug use, sometimes in formal (ceremonial) settings and sometimes recreationally, since before recorded history. It has only been in the last century or so that abuse and addiction have become large-scale problems. Using the literature and your own insights into these issues, formulate an argument as to why the problem has reached its current scale.  In your discussion, evaluate the […]