CHEMISTRY MIDDLE SCHOOL

Help with this question I got so confused 30 points

Answers

Answer 1

Answer:

Answer:

B:the second answer

Explanation:

Because the all have leaves

Answer 2

Answer: The answer is B because they all have leaves

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When lithium reacts with bromine to form the compound LiBr each lithium atom(1) gains one electron and becomes a negatively charged ion
(2) gains three electrons and becomes a negatively charged ion
(3) loses one electron and becomes a positively charged ion
(4) loses three electrons and becomes a positively charged ion

Answers

Answer: (3) loses one electron and becomes a positively charged ion

Explanation:

Lithium bromide is formed by combination of lithium cation and bromine anion.

Electronic configuration of lithium:

$[Li]=1s^22s^1$

Lithium atom will loose one electron to gain noble gas configuration and form lithium cation with +1 charge.

$[Li^+]=1s^2$

Electronic configuration of bromine:

$[Br]=[Ar]3d^(10)4s^24p^5$

Bromine atom will gain one electron to gain noble gas configuration and form bromide ion with -1 charge.

$[Br^-]=[Ar]3d^(10)4s^24p^6$

In lithium bromide, one electron from lithium metal gets transferred to bromine atom.

(1) gains one electron and becomes a negatively charged ion
(2) gains three electrons and becomes a negatively charged ion
(3) loses one electron and becomes a positively charged ion
(4) loses three electrons and becomes a positively charged ion

Sometimes clothes removed from the dryer cling together. What kinds of charges are on the clothes ?

Answers

The answer is "opposite charges."

Final answer:

When clothes are removed from the dryer and cling together, it is because static electricity is created from the clothes rubbing together in the dryer. This results in an imbalance of electrical charge on the clothes, with some having a net positive charge and others a net negative charge, which makes them attract and stick to each other.

Explanation:

When clothes are removed from the dryer and they cling together, this is due to the presence of static electricity. Static electricity occurs when materials are rubbed together, causing an exchange of electrons. This exchange results in the materials being electrically charged. In the case of your dryer, the process of tumbling and rubbing the clothes together can strip electrons from the clothes and deposit them on other pieces.

This creates an imbalance in charge, leading to some clothes having a net positive charge and others with a net negative charge. The positively charged clothes are attracted to the negatively charged ones, and this attraction causes the clothes to stick together. The force that brings these different charged clothes together is called electrostatic force. If the clothes are damp, the presence of water molecules can suppress the charge, reducing the static cling.