A toxic substance<span> is a </span>substance<span> that can be poisonous or cause health effects. People are generally concerned about chemicals like polychlorinated biphenyls (PCBs) and dioxin which can be found at some hazardous waste sites.</span>
165000 s⁻¹ or 165000 Hertz (Hz)
<u>Explanation:</u>
Frequency can be found by dividing velocity in m/s by the wave length in m.
Frequency = v/λ
v is the velocity of the wave in meters per second = 330 m/s
λ is the wavelength of the wave in meters = 0.002 m
Frequency = 330 m/s / 0.002 m = 165000 s⁻¹ or Hz
Answer:If you make a Punnett square, then you have all of the offspring having one dominant allele (the brown body color) and one recessive allele (the back body color).
Explanation:it is expert verified
Valance electrons are the extra electrons on the outermost orbital, that hasn't been filled yet. For example, Lithium would have one valence electron, on the 2s orbital, because that is an extra electron floating around that 2s orbital, that can be shared with others, since each element's goal is to have no valence electrons. If an orbital is filled, it therefore has no valence electrons, because valence electrons are only extra electrons, if that makes any sense.
There are many groups of the periodic table. These groups categorize electrons by the amount of valence electrons they have. The group on the far left, the alkali metals, all have one valence electrons. The alkali metals include Lithium, Sodium, and other elements, so therefore give away that one electron easily, because if they give it away they won't have any valence electrons. (This is why you often see salt, sodium chloride, because sodium gives away its one valence electron to chloride, who needs one electron to have no valence electrons.) One other notable group is the noble gases, on the far right of the periodic table. These elements have no valence electrons, so therefore won't bond easily with other elements.
Hope this helped!
Answer:
Six
Explanation:
Because it needs enough aluminum ions
