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3 years ago

According to the vsepr theory, which shape represents the molecule, cf4?

1 answer:

3 0

VSEPR is an acronym which stands for Valence Shell Electron Pair Repulsion. The theory is most commonly used as basis for establishing the shapes of the substances.

CF4, as can be seen, has only one carbon atom and four fluorine atoms. The most preferred shape of the chemical is therefore, tetrahedral.

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In the process of precipitation, liquid water changes into water vapor and enters the atmosphere.

timama [110]

Answer:

true

Explanation:

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20 pts!!! What are the missing coefficients needed to make this equation balanced from left to right?

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Pretty sure the answer is c

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3 years ago

An empty vial weighs 55.32 g.

ziro4ka [17]

The answer is: Volume of mercury = 9.63 $cm^3$ .

Density (d) is defined as mass of substance divided by its volume. Thus, if mass and density are known, then Volume can be determined.

What is the formula of volume in terms of density?

Let mass of substance be 'm' and volume be 'V'. Thus, as per the definition of density, it is expressed as-

$d =\frac{m}{V}$

Thus, volume can be expressed as-

$V = \frac{m}{d}$

Now, mass of empty vial= 55.32 g and the mass of (vial+ mercury) = 185.56 g.

Thus, mass of mercury = $185.56\ g- 55.32\g = 130.24\ g$

Thus, mass of mercury = 130.24 g and density of mercury = $13.53\ g/cm^3$ . Its volume is calculated as-

$V =\frac{130.24\ g}{13.53\ g/cm^3} = 9.63\ cm^3$

Hence, volume of mercury = 9.63 $cm^3$ .

To learn more about Density and Volume, visit:

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2 years ago

A large atom decays and emits a particle. After the reaction is complete, the atom’s mass has changed substantially. What kind o

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The answer is alpha particles <span />

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3 years ago

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What is produced in a double-displacement reaction?

gregori [183]

The correct answer is option D, that is, two new compounds.

Double displacement also known as double replacement reactions, metathesis or exchange reactions. It take place when two ionic compounds are exchanged forming two new compounds. One can consider the reaction as swapping the anions or the cations.

Water usually functions as the solvent for a double replacement reaction, and the products and reactants are generally ionic compounds, however, they can also be bases or acids. The example of a double replacement reaction is:

BaCl₂ (aq) + Na₂SO₄ (aq) = BaSO₄ (s) + 2NaCl (aq)

In this, the cations are Na⁺ and Ba²⁺, and the anions are SO₄²⁻ and Cl⁻. If the anions or cations are swapped, the products obtained are BaSO₄ and NaCl.

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3 years ago