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Tju [1.3M]
4 years ago
14

TEKS DOK Ski Builder

Chemistry
1 answer:
artcher [175]4 years ago
3 0

Answer:

b

Explanation:

As the coin is rubbed, the particles in the coin vibrate (presenting kinetic energy in the particles i.e. heat). The heat is transferred as thermal energy.

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A sample of FeCl3 has a mass of 36.45.How many molecules would that be?
stira [4]

Answer: 1.35x 10²³ molecules FeCl3

Explanation: First find the number of moles for FeCl3 using its molar mass which is equal to 162.2 g FeCl3

Convert moles of FeCl3 to molecules by using the Avogadro's number.

8 0
3 years ago
Draw the electron dot diagram of each the atoms in the molecule.
Westkost [7]

Answer:

That’s not very specific

Explanation:

7 0
4 years ago
Can elements be broken down further into other pure substances?
grigory [225]
No they can't because the definition of an element is, something that exists as a single atom
For example, oxygen is an element and can't be broken down anymore however, it can be combined with hydrogen to make water
8 0
4 years ago
(70 POINTS) PLEASE HELP ME YOU DONT HAVE TO WRITE 4 PARAGRAPHS JUST HRLP ME EXPLAIN A SCIENTIFIC THERORY
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Answer:

well its def is : an explanation of observations or events based on knowledge gained from many observations and investigations

Explanation:

you will also need to know this if you dont already ✔

scientific law:✨

a law that describes a repeatable pattern in nature

manipulated/independent variable:✨

variable that stands alone an is not affected by other variables (the variable that is purposely changed)

responding/dependent variable:✨

variable that changes as a result of an experiment (variable that is measured)

control variable:✨

variable that always stays the same in an experiment

7 0
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Which of the following is an example of commensalism?
Contact [7]

Answer: A tick on a deer

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because commensalism is a type of symbiotic relationship in which one species benefits, while the other species is neither harmed nor helped

please put brainlest for me if you found this helpful

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