When the concentration of a reactant is decreased which of the following is true?
A) The rate of reaction always decreases.
B) The rate of reaction usually decreases.
C) The rate of reaction always increases.
D) The rate of reaction usually increases.
B
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The steepest natural angle that loose material can stand at without pieces sliding or rolling downslope is called the _________________
Fill in the blank(s) with correct word
Why are the Burgess Shale organisms considered an unusual fossil assemblage? What will be an ideal response?
Today, most immigrants to Australia come from
A. Britain B. Continental Northwestern Europe C. Asia D. The United States
Groundwater as a water source may be better than surface water because
A) groundwater may be naturally purified by percolation through soil. B) groundwater is a self-replenishing resource that cannot be exhausted. C) surface water is not naturally self-replenishing. D) groundwater is more easily located than surface water.