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Bezzdna [24]
2 years ago
8

In the laboratory, Austin is given a mixture of iron filings, sand, and salt. To separate the mixture, Austin uses a magnet, boi

ling water, and a
filter. Which statement is true about the process Austin uses to separate this mixture?
A. Austin uses only physical changes to separate the
mixture's components.
B. Austin uses only chemical changes to separate the mixture's components.
C. Austin uses both physical and chemical changes to separate the mixture's components.
D. Austin uses neither physical nor chemical changes to separate the mixture's components.
Chemistry
2 answers:
katrin [286]2 years ago
8 0

Answer:

d

Explanation:

Alex_Xolod [135]2 years ago
7 0

Answer:

D

Explanation:

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Predict the shape of the molecule.
GuDViN [60]

Number of electron pairs = \frac{1}{2}[V+N-C+A]

2

1

[V+N−C+A]

V = number of valence electrons present in central atom

N = number of monovalent atoms bonded to central atom

C = charge of cation

A = charge of anion

SbCl_5SbCl

5

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In the given molecule, antimony is the central atom and there are five chlorine as monovalent atoms.

The number of electron pairs are 5 that means the hybridization will be sp^3dsp

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B and geometry of the molecule will be trigonal bipyramidal.

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2 years ago
How is burning magnesium different from burning methane?
Paha777 [63]
I believe/thought they were very similar due to the fact that they both undergo a process called “oxidation” where they release oxygen into the atmosphere.
3 0
3 years ago
Why do a planets speed change in orbit
gayaneshka [121]

According to Kepler's  second law of orbital motion, a plane's orbital speed changes , depending on how far it is from the sun. The closer a planet is to the sun, the stronger the sun's gravitational pull on it, and the faster the planet moves.  The farther away from the sun, the weaker the sun's gravitational pull and the slower it moves in its orbit.

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3 0
2 years ago
Relating ideas explain why ionic crystals melt at much higher temperatures than typical covalent molecular crystals.
gayaneshka [121]
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3 years ago
Linolenic acid (C18H30O2 - M.W. = 278.42 g/mol) reacts with hydrogen gas according to the equation: C18H30O2 + 3H2 (g) → C18H36O
Ludmilka [50]

Answer:

2.53 L is the volume of H₂ needed

Explanation:

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By stoichiometry, ratio is 1:3

Let's convert the mass of the linolenic acid to moles:

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