Chem 111 Samenvattingen, Aantekeningen en Examens

Chem 111 Final Exam Questions with Complete Solution1

CHEM 111 Final CSU Questions with Complete Solutions.

Chem 111 final Questions with Complete Solution1.

CHEM 111 TEST QUESTIONS with Complete Solutions.

CHEM 111 Final Exam Questions with Complete Solutions.

Define Calorimetry Correct Answer-Determining the changes in energy of a system by measuring the heat exchanged with the surroundings Know how to calculate amount of energy released using E=mc(delta)T Correct Answer-E=energy, m=mass, c=specific heat, (delta T)=change in temp What is meant by a small calorie "c" and a food calorie "C"? Correct Answer-c=1 calorie=4.184 J, C=1000 little calories=4184 J When walking, an average person burns .453 C/(mile*pounds). How many C does a 150-po...

EXAM 1 Correct Answer- As part of the calibration of a new laboratory balance, a 1.000 g mass is weighed with the following results: Trial 1: 1.201 +/- 0.001 Trial 2: 1.202 +/- 0.001 Trial 3: 1.200 +/- 0.001 The balance is: Correct Answer-Precise but inaccurate ______ are substances with constant composition that can be broken down into elements by chemical processes. Correct Answer-compounds Which of the following is not a unit in the SI system? Correct Answer-calorie A species ...

Chem 111 Final Questions with Complete Solutions.

physical vs. chemical change - Answer-physical- does not change the substance. change in matter but nor chemical composition chemical- substance is changed. energy is absorbed or released. one or more substances being used solid - Answer-often rigid with definite shape gas - Answer-fills container and is easily comressed liquid - Answer-flows and takes shape of container, has a op surface 2 types of mixtures - Answer-heterogeneous- not uniform through out mixture homogeneous- uniform th...

Know your significant figure rules Correct Answer-ALL zeroes between non-zero numbers are ALWAYS significant. ALL zeroes which are SIMULTANEOUSLY to the right of the decimal point AND at the end of the number are ALWAYS significant. ALL zeroes which are to the left of a written decimal point and are in a number >= 10 are ALWAYS significant. define calorimetry Correct Answer-the act of measuring heat required or evolved during a chemical process know how to calculate the amount of ener...