Chem 120 week 5 exam Study guides, Class notes & Summaries

CHEM 120 Week 8 Exam 3 (Units 5, 6, and 7)

CHEM 120 Week 5 Exam 2 (Units 3 and 4)

1. A solution is prepared by dissolving 50 g of KCl (74.6 g/mol) to a volume of 1 L. What is the molarity of this solution? 2. You prepare a solution by dissolving 20 g of NaCl to a volume of 350 mL in water. What is the mass/volume % concentration of this solution? 3. When the following reaction goes in the forward direction, what is the base? 4. You are preparing a buffered solution. So far, your solution contains H2PO4- ions, what would you add to this solution to prepare your buffer sy...

CHEM 120 WEEK 8 FINAL EXAM (TCO 8) 35.0 mL of 0.25 M NaOH is neutralized by 23.6 mL of an HCl solution. The molarity of the HCl solution is (show your work): (TCO 7) (a, 5 pts) Given that the molar mass of H3PO4 is 97.994 grams, determine the number of grams of H3PO4 needed to prepare 0.75L of a 0.25M H3PO4 solution. Show your work. (b, 5 pts) What volume, in Liters, of a 0.25 M H3PO4 solution can be prepared by diluting 50 mL of a 2.5M H3PO4 solution?

CHEM 120 WEEK 8 Final Exam 2023 with correct answers Already graded A+ molarity = moles solute / liters solution 0.25 M = moles NaOH / 0.035 L moles NaOH = 0.00875 moles NaOH 1. (TCO 8) 35.0 mL of 0.25 M NaOH is neutralized by 23.6 mL of an HCl solution. The molarity of the HCl solution is (show your work): (Points : 5) 2. (TCO 1) How many mL are in 3.5 pints? Show your work. (Points : 5) 3.5 pints is equivalent to 1656.116 1 pint = 473.176 ml 3.5 pints* 473.176mL = 1656.116mL 3. (TC...

CHEM 120 Week 8 Final Exam Questions-Answers (Version 1) 2023 UPDATE6. (TCO 6) A gas at a temperature of 95 degrees C occupies a volume of 165 mL. Assuming constant pressure, determine the volume at 25 degrees C. Show your work. (Points : 5) 7. (TCO 6) A sample of helium gas occupies 1021 mL at 719 mmHg. For a gas sample at constant temperature, determine the volume of helium at 745 mmHg. Show your work. (Points : 5) 8. (TCO 12) If one strand of a DNA double helix has the sequence T T A G C G ...

HESI A2 ALL SUBJECTS V1 2020/2021 UPDATE Vocabulary The words that are in caps represent the exact answer choice that I chose. 1. The lower surface of a structure is referred to as....INFERIOR **2. Injurious? TOXIC 3. Equilibrium? SENSE OF BALANCE 4. Site? LOCATION 5. The patient gave his Assent? AGREEMENT 6.The technician wore gloves as precaution? PREVENTIVE MEASURE 7. The of his right eye was damage. LENS ( correct word usage)jhghgf 8. The inebriate man staggered while walking to h...

Exam (elaborations) CHEM 120 Week 5 Quiz_ Introduction to General Organic and Biological Chemistry with Lab | 100% CORRECT SOLUTION 2/25/2020 Week 5 Quiz: Introduction to General Organic and Biological Chemistry with Lab-MCMILLIN Week 5 Quiz Due Feb 10 at 11:59pm Points 30 Questions 10 Available Feb 1 at 11:59pm - Feb 10 at 11:59pm 9 days Time Limit 30 Minutes Instructions This quiz was locked Feb 10 at 11:59pm. Attempt History Attempt Time Score LATEST Attempt 1 19 minutes 25 out of 30 Score ...

Week 10 Final Exam Return to deck 1. In AR disorders, carriers have:  Two mutated genes; two from one parent that cause disease  A mutation on a sex chromosome that causes a disease  A single gene mutation that causes the disease  One copy of a gene mutation but not the disease 2. A 76-year-old patient with a 200-pack year smoking history presents with complaints of chronic cough, dyspnea, fatigue, hemoptysis, and weight loss over the past 2 months. The physical exam re...