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LUCKY_DIMON [66]
2 years ago
11

(URGENT FOR BRAINLIEST!!)

Chemistry
1 answer:
aniked [119]2 years ago
8 0

Answer:

mountain

Explanation:

when plates move towards each other they create mountains

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Consider the following isotopic abundance data for argon (Ar) and silicon (Si):
pshichka [43]

Answer:

Explanation:

Molar mass of Argon

= 35.96755 x .00337 + 37.96272 x .00063 + 39.96240 x .99600

= .12121 + .0239165 + 39.80255

= 39.95

Molar mass of silicon

27.97693 x .9223 + 28.97649 x .0467 + 29.97376 x .0310

= 25.803 + 1.35320 + .929

= 28.08

b )

No of atoms of Si  in 78.2 g = 78.2 x 6.02 x 10²³ / 28.08

= 16.76 x 10²³ .

c )

42 Ar / 40 Ar = 1.05006

42 Ar / 39.95 = 1.05006

42Ar = 41.95

2 )

C₁₆H₁₅F₂N₃O₄S

Mol weight = 16 x 12 + 1 x 15 + 2 x 19 + 3 x 14 + 4 x 16 + 32

= 192 + 15 + 38 + 42 + 64+ 32

= 383

No of molecules = .078 x 6.02 x 10²³ / 383

= 1.226 x 10²⁰ molecules .

7 0
3 years ago
What is the formula of water and what are the two ions that it is made of?
ahrayia [7]
H20. 2 of hydrogen and oxygen
6 0
2 years ago
I need help please asap
Margaret [11]

Answer:

Bonding in chemistry is known as chemical bonding which means the interaction or attraction between molecules.

Chemical bonds are of different type such as ionic, covalent, hydrogen, and metallic. Ionic bonds are formed by the transfer of valence electron from one atom to other and there is unequal distribution of electrons between two or more atoms. Ionic bonds forms two oppositely charges ions positively charged (loses electron) or negatively charged (gains electron).

Covalent bond are the strong chemical bonds that form due to equal sharing of electron pairs between atoms. They form a stable element and have stable attraction or repulsive forces.

8 0
3 years ago
Bubbling and fizzing are the products of a chemical reaction. Which substances are the reactants?
7nadin3 [17]
B. Vinegar and Baking soda :)
6 0
3 years ago
I don’t get this please help!!
kodGreya [7K]
OK,lisen to me slowly,
all define you.all thing


1.Look at peridoic table which one is solid or others.
For example:hydrogen is air.
And you gonna explain what is hydrogen,

2.After look periodic table you will be able to know every element.

3.Dont forget to check your homework.!!

6 0
3 years ago
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