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Andrews [41]
3 years ago
11

CC14

Chemistry
1 answer:
maria [59]3 years ago
5 0

Answer:

Na and Cl

Explanation:

An ionic compound is solid at state room temperature. Therefore Na and Cl would be the correct answer :)

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A nuclide of Superscript 64 subscript 29 upper C u. absorbs a positron. Which is the resulting atom? Superscript 65 subscript 29
vichka [17]

Answer:

option) D

Explanation:

i just took the test

6 0
3 years ago
26. 8 g of ammonium chloride is dissolved in water to make a 0. 25 L solution. What is the molarity of the solution?
pishuonlain [190]

Answer: 0.5 M

Explanation:

Ammonium chloride has a gram formula mass of 53.49 g/mol, so 26.8 grams of ammonium chloride is 26.8/53.49 = 0.501 mol.

So since molarity = (moles of solute)/(liters of solution), the answer is 0.501 / 0.25 = 0.5 M

6 0
3 years ago
What word or two-word phrase best describes the shape of the fluoroform molecule?
Vlad [161]

Answer : The shape of the fluoroform molecule is Tetrahedral.

Explanation :

First we have to calculate the Hybridization of the molecule by formula,

\text{Number of electrons} = \frac{1}{2}[V+H-C+A]

where,

V = Number of valence shell electron in central atom

H = Number of neighboring monovalent atom

C = charge of cation

A = charge of anion

The central atom in this molecule is Carbon, it has 4 electrons in their valence shell.

The neighboring monovalent atoms are one Hydrogen atom and three Fluorine atom.

There is no charge of cation and anion on the given molecule.

V = 4

H = 1 Hydrogen atom + 3 fluorine atom = 4

C = 0

A = 0

By the above hybridization formula, we get

\text{Number of electrons}= \frac{1}{2}[4+4-0+0] = 4

The number of electron pair = 4

The number of lone pair = 0

The number of electrons is 4, this means that the hybridization is sp^{3} and the geometry of the molecule is Tetrahedral.

The geometry of the molecule is shown below.


3 0
3 years ago
Which is an example of a homogeneous mixture?
goldenfox [79]

Answer:

Clean Air  So B

Explanation:

5 0
3 years ago
What is the primary source of heat in the central cores of the giant planets?
Yanka [14]

Answer:

Each giant planet has a core of “ice” and “rock” of about 10 Earth masses. Jupiter, Saturn, and Neptune have major internal heat sources, obtaining as much (or more) energy from their interiors as by radiation from the Sun.

Explanation:

3 0
3 years ago
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