Answer:
The answer(s) will be A and B
Explanation:
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As a result, the protein molecule is 315 x 10^-9 metres long.
<h3>What does a hydrogen atom contain?</h3>
- The hydrogen atom is the most fundamental of all atoms because it just contains one proton and one electron.
- In addition to this most common isotope, the hydrogen atom can also be found in protium, deuterium, and tritium.
- Hydrogen, denoted by the letter H, has the first atomic number among the lightest elements.
<h3>How do you describe a hydrogen atom?</h3>
- There are three known hydrogen isotopes.
- Hydrogen has isotopes with masses of 1, 2, and 3, with mass 1 being the most common.
- This isotope is also referred to as protium and hydrogen in everyday language (symbol H, or 1H).
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Answer:
1. Density can be used to identify a substance
2. Density can be used to ascertain whether a substance will float in water.
Explanation:
The calculation of the density of a substance can be used to identify the substance. If the density of a substance is calculated accurately, and compared with a table of standard densities, then we can identify that substance.
Also, density determines whether an object will float or sink in water. If an object is less dense than water then it will float in water. If it is denser than water, then it will sink in water.
Nonmetals have properties opposite those of the metals. The nonmetals are brittle, not malleable or ductile, poor conductors of both heat and electricity, and tend to gain electrons in chemical reactions. Some nonmetals are liquids. These elements are shown in the following figure.