Help I don't get it XD

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Answer 1

Answer: I think it takes about 2 weeks to go from H to B on the diagram since H is the new moon and B is the full moon so going from H to B represents half of the lunar cycle and one lunar cycle takes about 28 days (which is about 4 weeks).

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Have people considered that aliens could possibly live without oxygen and water and we are looking in the wrong direction for a new life form?This is astronomy, not chemistry. Sorry, they do not have the option of astronomy.

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I have never heard anyone ever say anything about aliens only living by using the same metabolistic processes as humans... But.. there may likely be another planet out there that does use oxygen, although at a different percentage from Earths. Anyways, even if we do find "other" life forms, who's to say that they're on the same level as us? Have you ever considered the fact that ants to us are like we are to other life forms out there and maybe they don't want or can't communicate with us because they see themselves as superior?

Hope that helps!

An atom has 8 electrons and a mass of 17. What would the correct symbol be?A. 17gF
B. 90
C. 25,61
D. 17,0

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I believe the answer is A.

Which class of compounds does ammonia blog

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T'belongs to the hydrides, it's a nitrogen hydride.

What is an investigation which all conditions are controlled

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It is a controlled experiment

Which best explains why metal cooking utensils often have plastic coating on the handles

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Metal solids contain a positively-charged cation surrounded by a "sea" of delocalised, negatively-charged electrons.

The electrons are able to move freely, and hence transfer kinetic energy throughout the implement at a much quicker rate than non-metals.

Plastic is made of non-metals (Mostly carbon and hydrogen) and therefore is a poor thermal conductor.

Therefore, by coating the metal utensil in plastic, the rate of heat energy transfer to the person in contact's hand is decreased.

Answer:

Plastic reduces the transfer of thermal energy to hands holding the utensils.

Explanation:

Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil at around 370°C.”What topic is the teacher most likely talking about?

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Explanation:

The teacher is most likely talking about the fractional distillation process.

Fractional distillation: It is a separation technique used to separate different components of the given mixture on the basis of their difference in boiling points of the different components. The component with lowest boiling point will get separate out first from the mixture and the vapors formed from boiling are condensed in a separate container.

So, when the fractional distillation of mixture of oils and fuels is carried out gasoline will separate out first due to lower boiling temperature and then kerosene followed by diesel and others (fuels and oils).

Answer:

distillation of a mixture

Explanation:

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