In a chemical reaction, one element replaces another element in a compound to form a new substance. Which of the following best describes this type of chemical reaction?
Combustion
Neutralization
Double Replacement
Single Replacement

For a particular reaction, ? h = -144.6 kj and ? s = -301.2 j/k. calculate ? g for this reaction at 298 k.

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

Which levels of government establish and implement educational requirements for minors