Which of these compounds is ionic? A. KF B. CO C. CO2 D. SO2
2 answers:
Remember, ionic is when you have a metal with a nonmetal. covalent is two nonmetal together. most periodic table show that "staircase" on the right side that show where metals and nonmetal are; in any case, I attached a periodic table showing this.
a. KF--> K is metal, F is nonmental, so this is ionic
the rest of the choices are two nonmetals together.
a. KF--> K is metal, F is nonmental, so this is ionic
the rest of the choices are two nonmetals together.
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Answer:
2.42L
Explanation:
Given parameters:
V₁ = 1.8L
T₁ = 293K
P₁ = 101.3kPa
P₂ = 67.6kPa
T₂ = 263K
Unknown:
V₂ = ?
Solution:
To solve this problem, we are going to use the combined gas law to find the final volume of the gas. The combined gas law expression combines the equation of Boyle's law, Charles's law and Avogadro's law;
All the units are in the appropriate form. We just substitute and solve for the unknown;
101.3 x 1.8 / 293 = 67.6 x V₂ / 263
V₂ = 2.42L
The Arrhenius equation describes the relation between the rate of reaction and temperature for many physical and chemical reactions
It is an expression that provides a relationship between the rate constant (of a chemical reaction), the absolute temperature.
The Arrhenius equation,
k = , where
k is the rate constant,
z is the collision factor,
p is the steric factor,
Ea is the activation energy,
R = 8.3245 is the ideal gas constant, and,
T is the temperature.
The activation energy by definition, is the minimum energy (or threshold energy) required for two particles of reactants upon collision to form products.
The Arrhenius equation could also be written as:
⇒ k = , where
⇒ A = zp, the Arrhenius factor.
Taking the neutral logarithm of both parties, we get:
⇒ In k = + In A,
Assuming that, A is independent of temperature, when T is increased, the equilibrium constant k will also increase and therefore, the rate of the reaction will also increase.
To learn more about Arrhenius equation here
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