If a nucleus captures an electron and then emits an alpha particle, its atomic number a. decreases by 1 b. decreases by 2 c. decreases by 3 d. decreases by 4 e. remains constant
If a nucleus captures an alpha particle, its mass number a. remains constant b. increases by 1 c. increases by 2 d. increases by 4 e. decreases by 2
If a nucleus captures an electron, its mass number a. remains constant b. decreases by 1 c. increases by 1 d. increases by 2 e. decreases by 2
What is the relationship between the rate constant and the half-life for a nuclear decay? k=??
A simple problem set of 10 simple, short first year problems.
I have attached the problem set in a word document. With one or two exceptions, all of the problems I believe are relativley simple, requiring no more than about 3 steps each. Thanks for the help. Just so you have an idea about the nature of the assignment without opening the attachment, the first two problems of the set ar ...continues
6 simple multiple choice problems, no answer explanations required
I have attached the problem set as a word document. No justification is required, I just need to verify that my answers are in fact correct! Thanks! Just to give you an idea of the nature of the assignment, the first question is: 1.On a relative basis, the weaker the intermolecular forces in a substance: A. The great ...continues
4 Acid/Base chemistry problems
1. Solve the following problem related to the solubility of equilibria of some metal hydroxides in aqueous solution. a) The solubility of Cu(OH)2 (solid)is 1.72x10^-6 gram per 100 ml of solution at 25 degrees C. i. Write the balanced chemical equation for the dissociation of Cu(OH)2 (solid) in aqueous solution. ii. Calcula ...continues
I am having trouble drawing the unit cell and labeling the symmetry elements.
Trouble calculating distances between tetrahedral sites in cubic cell.
I am having trouble with the whole problem. Calculating the distance between tetrahedral sites and drawing the unit cell and whether the tetrahedra share vertices, edges or faces. The actual problem is attached.
Can not calculate Z and densities.
Need help calculating z and densities of K2O (regular) and K2O with K filling all tetrahedral sites of hcp. Problem is attached.
