CHEM 120 (chem120)

CHEM120 Week 7 Concepts: Biochemistry – Download For Revision And Improve Your Grades LIPIDS In this concept, we will discuss one class of biological polymers called lipids or fats. You might be f amiliar with this class of biopolymers, which are found in butters and oils. We will discuss saturated and unsaturated fats, and what those terms mean for the molecule's structure as well as its properties at room temperature. 1. Which of the following is a source of lipids? • Sugar, fruits, and b...

CHEM 120 Week 8 Final Exam Review! RATED A+

1. Question: (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 0.25L of a 0.2M H3PO4 solution. Show your work. (b, 5 pts) What volume, in Liters, of a 0.2 M H3PO4 solution can be prepared by diluting 50 mL of a 5M H3PO4 solution? Show your work. (Pts. : 10) 2. Question: (TCO 7) (a, 5 pts) What is the mass/volume percent of a solution prepared by dissolving 43 g of NaOH in enough water to make a final volume of 120 ...

Chamberlain University CHEM 120 Final Exam Questions and Answers Updated Version Guaranteed A+

CHEM 120 Midterm Study Guide

CHEM120: Week 1 Lab Name: Michelle Ramsaroop You are giving your child a medicine that has a dosage of 2 tsp a dose. The instructions indicate that you are to give the child 3 doses day. How many days will a 100 ml bottle of medication last? Show all work below (1 point) 1tsp = 4.92892 2tsp = 9.85782 3 doses - 9.85782 X 3= 29.57346 100/ 29.58 = 3.347 100ml will last = 3.35 days 1. A chemical process dissolves 500 milligrams of iron oxide every 20 mins. How long would it take this reactio...

dentify an atom that has 4 protons and 6 neutron. What is the number of electrons in that atom? Calculate mass number. Beryllium (Be) Has 4 electrons Mass number = 4+6 = 10 If the number of neutrons are 6, then the mass number will be sum of neutrons and protons 6+4 = 10 Pick any nonmetric to metric equality and convert it. For example, 8.9 lb = _______________ g To find out how many grams in "x" pounds (lb), multiply the number of pounds by 453.59237. 1 lb (pounds) equals 453.592 g...

CHEM 120 Final Exam

Exam 2 Total Points: 60 PART 1: Multiple Choice questions: Q 1-24. (2 point each) 1. Chemical reactions (equations) show the following a. Reactants b. Products c. Physical state of each (gas or liquid or solid) d. All of the above 2. The following is true for a mole a. It is also known as Avagadro’s number b. It contains 6.022 * 1023 molecules c. It contains mass equivalent to molecular weight d. All of the above are true 3. In balancing chemical equations, the coefficients are us...