Examlex
What is the [H3O+] in a solution that consists of 1.5 M NH3 and 2.5 NH4Cl? Kb = 1.8 × 10−5
RNA World
A hypothetical early stage in the evolution of life, where RNA served as both genetic information and as a catalyst for chemical reactions.
Enzymes
Biological catalysts that speed up chemical reactions in living organisms without being consumed in the process.
Spontaneous Generation
Spontaneous Generation is the disproved theory that living organisms could arise from nonliving matter, a belief held before the advent of modern biology.
Sterile Broth
A nutrient-rich liquid media that has been treated to eliminate all forms of life, used for growing microorganisms in a lab.
Q3: Which of the following pure substances will
Q6: The number 6.0448, rounded to 2 decimal
Q13: Consider the general reaction 5Br<sup>−</sup>(aq) + BrO<sub>3</sub><sup>−</sup>(aq)
Q29: Consider the reaction CuI(s) ⇄ Cu<sup>+</sup>(aq) +
Q39: Calculate E°<sub>cell</sub> and indicate whether the overall
Q44: Which of the following activities is not
Q45: Consider the following structures (1 and 2
Q76: Calculate the solubility of silver chromate, Ag<sub>2</sub>CrO<sub>4</sub>,
Q92: The Haber process is the first step
Q96: Which of the following types of electrochemical