Solution: The atomic mass of element X is 33.42 amu. A

Introductory Chemistry 5
Describe Rutherfords gold foil experiment and the results of that experiment. How did these results refute the plum pudding model of the atom?

Introductory Chemistry 5
Problem 64P Write a nuclear equation for positron emission by each nuclide. (a) Co-55 (b) Na-22 (c) F-18

Elementary Statistics: A Step By Step Approach 9
Problem 25E find the variance and standard deviation. Battery Lives Eighty randomly selected batteries were tested to determine their lifetimes (in hours). The following frequency distribution was obtained. Class boundaries Frequency 62.573.5 5 73.584.5 14 84.595.5 18 95.5106.5 25 106.511

Classical Mechanics 0
In many problems in the calculus of variations, you need to know the length ds of a short segment of a curve on a surface, as in the expression (6.1). Make a table giving the appropriate expressions for ds in the following eight situations: (a) A curve given by y = y(x) in a plane, (b) same but x = x

Biology: The Dynamics of Life 1
Are all mixtures solutions? Are all solutions mixtures? Give an example.

Biology 11
Which color of light has the longer wavelength, violet or red?

Genetics: Analysis and Principles 6
Homologous genes a. are derived from the same ancestral gene. b. are likely to carry out the same or similar functions. c. have similar DNA sequences. d. exhibit all of the above features

Plant Systematics 3
What is the difference between a silique and a silicle? What family do they occur in?