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Alenkasestr [34]
3 years ago
7

1. When a mechanical wave, such as sound, reflects off a surface, what can the

Chemistry
1 answer:
oksano4ka [1.4K]3 years ago
4 0
That the surface is very shiny
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The ones with 8 protons

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Since there are two of them with 8 protons, we can assume they are the same element. The first 8 proton element has 10 neutrons while the second has 11. This makes them isotopes of one another

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.What threatens the newly hatched chicks?
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rats. that's all i know of Just about everything except the mother hen if they are natural hatch. Even when you incubate them there are threats. The healthy chicks will mob the weak ones, the older chicks (even by a day) will pick on the younger ones. Temperature extremes will threaten them as they need warm, humid conditions with gradual drops in surrounding temps in the brooder box. Early disease is sometimes a problem and all chicks should be started on medicated chick feed for the first few weeks to prevent several digestive diseases. Even the water dispenser can be a threat as newly hatched chicks will immerse themselves in an open water container so care should be taken to supply water in a self feeding covered dish.

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3 years ago
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What are the period and group trends in electronegativities
Leviafan [203]

Electronegativity of an element decreases as we move down a group on the periodic table and electronegativity increases while moving from left to right across a period on the periodic table.

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  • The electronegativity increases as we move from left to right across a period because from left to right across a period, the nuclear charge is increasing Hence the attraction for the valence electrons also increases.
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Compare the electron-dot formulas of CH4 and H2O. Why do these molecules have approximately the same bond angles but different m
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Because of the difference in the # of mollecules

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