Answer:
B. Low Melting Point
Explanation:
Ionic compounds are lattice formations of alternating positive and negative ions, which are held by strong electrostatic forces between;
These result in a high melting and boiling point and solid phase at room temperature;
When liquified, the ions are free to move and can therefore carry current, meaning ionic compounds are conductive;
Ionic compounds are formed by transfer electrons from a non-metal to a metal atoms.
Answer:
450 Å
Explanation:
The amino acids in an α-helix are arranged in a right-handed helical structure where each amino acid residue corresponds to a 100° turn in the helix, and a translation of 1.5 Å (0.15 nm) along the helical axis
Mass of protein= 33.0 kDa
33.0 kDa ×(1000Da/kDa) × ( 1 residue/ 110 Da)
=33.0 ×1000 × 0.0091
= 300 residues
300 residues × (1.5Å /residue)
=450 Å
<span>Johannes Kepler, an apprentice of Brahe, believed in the heliocentric universe but rejected past astronomers' belief in "Circular Orbit Path." The circular orbit path refers to the path the planets in the solar system is following. It is believed before that it follows a circular path rather than an elliptical one.</span>
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