Examlex
What is the pOH of a sodium fluoride solution prepared by adding 0.4198 grams of sodium fluoride to 100.0 ml of water at 25.0 °C?
The Ka at 25.0 °C for HF is 7.2 × 10-4.
Evolution
The method through which various types of living beings are believed to have evolved and spread out from ancestral forms over the earth's history.
Guanine
Guanine is one of the four main nucleobases found in the nucleic acids DNA and RNA, where it forms base pairs with cytosine.
Cytosine
One of the four main bases found in DNA and RNA, a pyrimidine nucleotide that pairs with guanine.
Nucleus
The central and most important part of an atom, containing protons and neutrons, or a membrane-bound organelle in cells containing the genetic material.
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