Chemistry: A Molecular Approach (Tro)
Chapter 7 The Quantum-Mechanical Model of the Atom
1) Calculate the wavelength (in nm) of a the red light emitted by a neon sign with a frequency of 4.74 1014
A) 633 nm
B) 158 nm
C) 142 nm
D) 704 nm
E) 466 nm
1. Trace the pathway of food once it enters into your mouth until it exits through the anus.
The pathway of food starts in your mouth, then it goes into the esophagus. After the
esophagus, it will go through the pyloric sphincter and into the stomach. Aft
What To Know: Anatomy Final Exam
What color are the granules in neutrophils?
c Light lavender
d Dark blue
What color do basophils stain?
b. Bright red
c. Dark purple
What differentiates a lymphocyte from a basophil?
Name 90 W Ti 0'4
Answer the following questions. Questions 1- 35 are worth 2 points each.
Avogadro’s number = 6.022 x 1023
l) A substance that can't be chemically broken down into simpler substances is
A) a homogeneou
Matter, Measurement and Problem Solving
Significant figures counting 0.000430 3 significant figures
rules for multiplication/division (lowest number of significant figures),
addition/subtraction (lowest decimal place)
Accuracy-how close you are to the a
Homework #3, Graded Answers
Chem20, Elementary Chemistry
94.) The average US farm occupies 435 acres. How many square miles is this? (1 acre = 43560
ft.2, 1 mi. = 5280 ft.)
2 0 t
0.6796 0.680 mi.
102.) Acetone has