Nitrogen (N) has two naturally occurring isotopes N-14 (75.65%; mass 13.9988 amu) and N-15 (24.35%; 15.0818 amu).  Calculate the atomic weight for nitrogen.  You must show your work and all numbers must have units.  Significant figure and rounding rules apply.  Type your answer. PLEASE MAKE SURE TO SUBMIT YOUR WORK TO THE POST-EXAM WITHIN 10 MINUTES OF COMPLETING YOUR EXAM.  

Unit Conversions Food Type kcal/g kJ/g Substance Specific Heat 1 qt = 946 mL 1 lb = 16 oz 0.454 kg = 1 lb 1 h = 60 min 60 sec = 1 min 1 Cal = 1 kcal = 1000 cal 1 Cal = 4.184 kJ = 4184 J 1 mL = 1 cm3 K = oC + 273.15 oC = K -273.15 oF = ((9/5) x oC) +32 oC = (5/9) x (oF – 32) d = m/v q = m x DT x C   Carbohydrate   4 17 Mercury 0.033   Fat   9 38 Gold 0.031 Protein 4 17 Water 1.00 A person walks for min.  If the average person burns cal/h on a walk, how many calories would the person burn?  Please write your answer in standard notation.   Please use the problem solving method of question, known, solve to solve this problem.  You must show your work and state what the question is asking, what the known values are, and then solve the problem using unit canceling method for full credit.  Type your answer in standard notation here.  The next problem will ask you to write your answer in both standard and scientific notation. PLEASE MAKE SURE TO SUBMIT YOUR WORK TO THE POST-EXAM WITHIN 10 MINUTES OF COMPLETING YOUR EXAM.  

A documented emergency will be the only situation where a student can take a quiz after the scheduled date and time and for full credit (students do not have the opportunity to take a quiz late for a late penalty).

Unit Conversions Food Type kcal/g kJ/g Substance Specific Heat 1 qt = 946 mL 1 lb = 16 oz 0.454 kg = 1 lb 1 h = 60 min 60 sec = 1 min 1 Cal = 1 kcal = 1000 cal 1 Cal = 4.184 kJ = 4184 J 1 mL = 1 cm3 K = oC + 273.15 oC = K -273.15 oF = ((9/5) x oC) +32 oC = (5/9) x (oF – 32) d = m/v q = m x DT x C   Carbohydrate   4 17 Mercury 0.033   Fat   9 38 Gold 0.031 Protein 4 17 Water 1.00 A rectangular metal bar weighs kg and has a density of g/cm3.  What is the volume of the metal in mL?  Please write your answer in standard notation.   Please use the problem solving method of question, known, solve to solve this problem.  You must show your work and state what the question is asking, what the known values are, and then solve the problem using unit canceling method for full credit.  Type your answer in standard notation here.  The next problem will ask you to write your answer in both standard and scientific notation. PLEASE MAKE SURE TO SUBMIT YOUR WORK TO THE POST-EXAM WITHIN 10 MINUTES OF COMPLETING YOUR EXAM.  

Which elements would be the best thermal insulators?  There may be more than one correct element.  Select all options that apply.  

A patient needs a blood transfusion.  If the concentration of blood is mL / pint and the patient receives pints of blood, how many liters of blood is that equal to?  Type your final answer in standard notation.     MUST SHOW YOUR WORK FOR HOW YOU SOLVED THIS PROBLEM USING UNIT CANCELING AND THE PROBLEM SOLVING TOOL AND UPLOAD YOUR WORK TO POST QUIZ 1 WITHIN 10 MINUTES OF SUBMITTING YOUR QUIZ.  All numbers must have units.

Keflex, an antibiotic used for respiratory and ear infections is available in mg / capsule. If a patient was prescribed g, how many capsules would that be?  Type your final answer in standard notation.     MUST SHOW YOUR WORK FOR HOW YOU SOLVED THIS PROBLEM USING UNIT CANCELING AND THE PROBLEM SOLVING TOOL AND UPLOAD YOUR WORK TO POST QUIZ 1 WITHIN 10 MINUTES OF SUBMITTING YOUR QUIZ.  All numbers must have units.

A doctor prescribes their patient dg of vitamin C, an antioxidant needed by the body.  The bottle says the concentration of vitamin C is g / tablet.  How many tablets is that equal to?  Type your final answer in standard notation.     MUST SHOW YOUR WORK FOR HOW YOU SOLVED THIS PROBLEM USING UNIT CANCELING AND THE PROBLEM SOLVING TOOL AND UPLOAD YOUR WORK TO POST QUIZ 1 WITHIN 10 MINUTES OF SUBMITTING YOUR QUIZ.  All numbers must have units.

Which elements would be the best thermal conductors?  There may be more than one correct element.  Select all options that apply.

Unit Conversions Food Type kcal/g kJ/g Substance Specific Heat 1 qt = 946 mL 1 lb = 16 oz 0.454 kg = 1 lb 1 Cal = 1 kcal = 1000 cal 1 Cal = 4.184 kJ = 4184 J 1 mL = 1 cm3 K = oC + 273.15 oC = K -273.15 oF = ((9/5) x oC) +32 oC = (5/9) x (oF – 32) d = m/v q = m x DT x C   Carbohydrate   4 17 Mercury 0.033   Fat   9 38 Gold 0.031 Protein 4 17 Water 1.00 A dieter loses lb.  How much energy in kcal is this equal to, if there are cal / lb?  Type your final answer in standard notation.   MUST SHOW YOUR WORK FOR HOW YOU SOLVED THIS PROBLEM USING UNIT CANCELING AND THE PROBLEM SOLVING TOOL AND UPLOAD YOUR WORK TO POST QUIZ WITHIN 10 MINUTES OF SUBMITTING YOUR QUIZ.  All numbers must have units.