Answer:
The Cambrian Explosion!
Explanation:
Sounds exciting right?
WELL IT IS!
The Cambrian explosion or Cambrian radiation was an event approximately 541 million years ago in the Cambrian period when practically all major animal phyla started appearing in the fossil record. It lasted for about 13 – 25 million years and resulted in the divergence of most modern metazoan phyla.
So in your case the answer would be 542 million years ago or the first animals with exoskeletons appear.
tanaman bunga matahari adalah dicot, dan mempunyai urat bercabang dan akar paip sementara tanaman padi adalah monocot, dan mempunyai urat selari dan akar berserabut.
Answer:
La socialización hace que un individuo tenga más confianza. Cuantas más personas hablamos, más temas hablamos, y esto a su vez amplía nuestro alcance. Además, nos hacemos más visibles para la sociedad y, por tanto, la gente nos reconoce. Por lo tanto, la socialización ayuda a construir la propia identidad.
Answer:
Group
Explanation:
A group comprises of individuals with similar aims or interest and who are organised to work together. In other words, a group is a collection of individuals that have something in common. They interact frequently, have common feelings about a subject, influence each other and try to achieve set goals together.
In the case of Connor and his friends, apart from the work place that brings them together, they are group because of their interest in games. They talk about games and set goals together to be achieved.
Yes, toluene/water combination would be a good binary solvent system for a mixed recrystallization.
Because toluene is a fairly nonpolar chemical and water is polar, they will not dissolve together, making the combination of toluene and water an excellent binary solvent system.
<h3>What is mixed recrystallization?</h3>
- The substance to be crystallized is first dissolved in the smallest quantity of hot "soluble solvent," and then hot "insoluble solvent" is added dropwise until the solution becomes faintly hazy.
- This is how mixed recrystallization happens.
<h3>What is binary solvent?</h3>
- When synthesizing pharmaceuticals and drug precursors, binary solvent mixtures are employed as carriers in HPLC columns.
- For accurate and effective separation of the necessary pharmaceutical components, it is essential to precisely manage the mixture's composition.
- Water-based solutions of ethanol, sugar, and salt.
Learn more about recrystallization here:
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