Consider the following potential energy profile for the A → B reaction.How many elementary steps are there? 
Definitions:
"Don't Ask, Don't Tell"
A former policy of the United States military that allowed gay, lesbian, and bisexual personnel to serve as long as they did not openly reveal their sexual orientation.
Watergate Break-in
The 1972 illegal entry into the Democratic National Committee headquarters at the Watergate office complex, leading to a political scandal and the eventual resignation of President Richard Nixon.
Richard Nixon
The 37th President of the United States, serving from 1969 until his resignation in 1974, known for his role in the Vietnam War and the Watergate scandal.
White House Tapes
Audio recordings of conversations and meetings in the White House, famously associated with President Nixon's administration and the Watergate scandal.
Q3: For the reaction X + Y →
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Q60: What is the name of Ba(NO<sub>2</sub>)<sub>2</sub>·3H<sub>2</sub>O?<br>A)barium nitrite<br>B)trihydrobarium(II)nitrite<br>C)barium
Q70: Which is the correct unit for a
Q80: The fact that when 48.6 g of
Q110: Melting ice is a _ change.
Q120: The density of magnesium is 1.7 g/cm<sup>3</sup>,and