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The platinum-191 electron capture reaction has a half-life of 3.0 days. If the initial radiation of a 191Pt sample measures 40 mCuries, what will it measure after 12 days?  Include units in your answer. Work out the problem on a separate piece of paper and upload a photo of your response at the end of the test. Please mark the problem clearly and show your work. Enter the radiation in the box below.    

Which of the following elements has the greatest first ionization energy?

What is the correct name for S2Cl2?

Another anticancer drug is cisplatin, Pt(NH3)2Cl2. Calculate the formula mass of this compound. Work out the problem on a separate piece of paper and upload a photo of your response at the end of the test. Please mark the problem clearly and show your work. Enter the formula mass in the box below. _____________g/mol

Platinum-191 undergoes electron capture. Write out this nuclear reaction showing the resulting product(s).  You may submit your response in the box below using the text editing tools or upload a photo of a written response at the end of the test. Please mark the problem clearly.

The reaction shown below is an example of ________.

Calculate the mass of 5-FU required to make 300 mL of an injectable solution of 5-FU at a concentration of 0.05 M. Work out the problem on a separate piece of paper and upload a photo of your response at the end of the test. Please mark the problem clearly and show your work. Enter the mass in the box below.   ___________ g of 5-FU

A 2.5-gram sample of French fries is placed in a calorimeter with 500.0 g of water at an initial temperature of 21°C. After combustion of the French fries, the water has a temperature of 48°C. What is the caloric value (kcal/g) of the French fries? Specific heat of water is 1.00 cal/oC.

A catalyst is ________.

Which statement is false about the following reaction? Pb + I2  → PbI2