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3 years ago

why is the term "ionic" used when describing compounds formed from a metal element and a nonmetal element?

1 answer:

8 0

Ionic compounds form when metals transfer valence electrons to nonmetals. Ionic compounds exist as crystals rather than molecules.

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3. What is the mass of 5 moles of Hydrogen sulfate?I

solong [7]

Answer:

490

98 for 1 mole, Hence for 5 moles 5 X 98 =490.

Explanation:

Brainliest please?

3 0

3 years ago

The teacher prepares 2.50 liters (L) of a salt solution for a class experiment. How many quarts (qt) are in 2.50L? ( 1 quart = 0

jek_recluse [69]

Quarts are a measurement for liquids.
1 quart is equivalent to 0.943 litres
The volume of the solution is 2.50 L
Since 0.943 L = 1 quart
Then 2.50 L = 1 quart/0.943 L x 2.50 L
Volume = 2.65 quarts
Volume in quarts is 2.65 qt

7 0

3 years ago

Read 2 more answers

What is a relationship where one organism benefits while the other gets nothing

andreev551 [17]

The answer is <span>commensalism</span>

8 0

4 years ago

6.55. A vapor stream that is 65 mole% styrene and 35 mole% toluene is in equilibrium with a liquid mixture of the same two speci

KonstantinChe [14]

Answer:

The composition of vapor is 0.86 and the composition of toluene is 0.14

Explanation:

Given:

Vapor composition $y_{s} = 0.65$

Toluene composition $y_{t} = 0.35$

Pressure of the system $P = 150$ mm Hg

From Raoult's law,

For toluene,

$Py_{t} = x_{t} P _{t}$

$150 \times 0.35 = x_{t} P_{t}$

$x_{t} = \frac{52.5}{P_{t} }$

For vapor,

$Py_{s} = x_{s} P _{s}$

$150 \times 0.65 = x_{s} P _{s}$

$x_{s} = \frac{97.5}{P_{s} }$

Since, $x_{t} + x_{s} = 1$

$\frac{52.5}{P_{t} } + \frac{97.5}{P_{s} } = 1$

Since $P_{s}, P_{t}$ are dependent on temperature.

At $T = 358.6$ K, value of $P_{s} = 112.876$ mm Hg and $P_{t} = 359.03$ mm Hg

So calculate $x_{t}$

$x_{t} = \frac{52.5}{359.03} = 0.14$

For $x_{s}$

$x_{s} = 1-x_{t}$

$x_{s} = 1-0.14$

$x_{s} = 0.86$

Therefore, the composition of vapor is 0.86 and the composition of toluene is 0.14

6 0

4 years ago

The quantity of energy released or absorbed as heat during a chemical reaction is called the 28. a. temperature. c. entropy d. f

Tatiana [17]

Answer: enthalpy of reaction.

Explanation:

Temperature of the gas is defined as the degree of hotness or coldness of a body. It is expressed in units like $^0C$ and $K$

Entropy is the measure of randomness or disorder of a system. If a system moves from an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.

Free energy is the amount of energy that can be converted into useful work.

Enthalpy of the reaction is the difference between the energy of products and the energy of reactants. it is either the heat released or absorbed during the reaction. It is either positive or negative.

5 0

4 years ago