Your solutions/answers to the following arc due In one week at the beginning of lab. You...
2. Prelab (due at the beginning of lab) Calculate the pH of the following solutions. Show your computations clearly. a.) 0.100 M NaOH b.) 0.100 M HCI c.) 0.100 M CH:COOH (weak acid) d.) 0.100 M NH (weak base)
please help. Week 9: pH of Buffer Solutions Pre-lab (20 points) Email answers to your instructor on the date of your regularly scheduled lab (Tues, mar 24" ...) What is the definition of a Bronsted Lowry Acid-? What is the definition of a Bronsted-Lowry Base? Water is amphoteric. That is can act like either an acid or a base. Write the self-ionization reaction for water. Kw, the ion product of and pkw has a value of - pH is defined...
Answer these questions before coming to the lab and turn in your answers at the beginning of the lab to get credit. Turning this prelab question sheet at the end of the lab would result in not getting any credit for the prelab. 1. A cube's length was measured with a caliper to be 2.638 cm and the mass of the cube is 61.60 g. a) How many significant figures you get when you read with this caliper? b) Calculate...
PRELABORATORY ASSIGNMENT Due at the beginning of the lab period (Week 1). 1. What are the two reasons that a "Titration to Determine Sample Size" must be performed in Week 1 of the experiment? 2. Give the definition of the "midpoint" of a titration. 3. How many decimal places can a buret be read to? 4. After standardizing your NaOH solution in Week 1, what you should do with the remaining NaOH solution? 5. After completing the two-week experiment, what...
PHYSICS 1403 Lab Homework- Gravity This is due when you come to lab the week of March 18. Shown below are the data and graphs for three objects dropped off a tall building. Discuss the motion for each object. Include any relevant details about acceleration and air resistance (i.e, calculate them). Write on the back if you need more room. (20 pts) object 1 object 2 object 3 time (s) (m) 2.45 9.8 344.1 221 4 784 39.2 4.9 19.6...
PHYS 111 Laboratory - Pre-lab #14 (THE PENDULUM) Student Name: Lab Day and Time: Due at the beginning of lab. All answers must be legibly handwritten for credit. Show all work. References: lab manual, textbook Ch. 14.1 - 14.5. 1) (lab manual and Section 14.1) What is Simple Harmonic Motion (SHM)? 2) (Ch. 14.1, Equation 14.1) a. Write an equation for the oscillation period in terms of frequency. Define all SI units. b. If an oscillator completes 10 cycles in...
This assignment is due at the beginning of your lab period in the next week Name: pts: 115 pts Consider the following reaction between cyclohexene and diatomic bromine. .. oke 40 ml 35 ml Cyclohexene (C6H12): molecular weight = 82.14 g/mol; density = 0.811 g/ml Bromine (Bra): molecular weight = 159.81 g/mol; density = 3.12 g/mL (1 point each) 1. How many grams of cyclohexene are involved in this reaction? 2. How many grams of bromine are involved in this...
Name: Lab day & time: Human Skin Color Assignment Due: at the beginning of lab during the week of March 10-13 (no late assignments). You are welcome to discuss your ideas with others. However, your written answers must be original. Please write in complete sentences. Note: For this assignment, consider how selection acted on skin color in indigenous populations around the world. Evolution of Skin Color - The Conventional Explanation Until fairly recently, the leading explanation for the variation in...
Prelab Name Class Section Answer these questions before coming to the lab and turn in your answers at the beginning of the lab to get credit. Turning this pre lab question sheet later would result in not getting any credit for the pre lab. 1. What is a standing wave? 2. What is the name given to a point on a vibrating string at which displacement is always zero? 3. The length of the string from the vibrator to the...
107 CHE115 Name s page out of your laboratory manual and submit it to your TA with your answers. B. Post-Lab Assessment Questions: (20 pts) 1. (5 pts) How could yo poratroy could you as a class sele on one value to report to the Bayer Corporation? (8 pts) Calculate the percentage (by mass) of sodium in sodium bicarbonate. You must show your calculations to receive credit for this question. 2. (7 pts) Based on the results you obtained in...