Explanation:
there are three basic types of soils sand silt and clay . But most soils are composed of a combination of the 3 different types.
The cubes have only the same volume, so the answer is c.
Answer:
50 gram calcium do you need
Explanation:
please make me brainlist answer
Answer:3480s⁻¹
Explanation:We can solve the following problem using the Arrhenius equation.
Arrhenius equation is given by:
![K=Aexp[-Ea/RT]](https://tex.z-dn.net/?f=K%3DAexp%5B-Ea%2FRT%5D)
A=Pre-exponential factor or frequency factor
Ea=Activation energy
R=Ideal gas constant
T=Temperature
K=Rate constant
From the Arrhenius equation we can see that the rate constant K is related with the activation energy and frequency factor.
In the question we are given with the following data:
Ea=42KJ/mol=42x 1000 J/mol
A=8.0×10¹ per second
T=298K
R=8.314J/K mol
when we substitute these given values in Arrhenius equation
![K=A{exp[-Ea \div RT]}\\K=8\ \times10^{10} s^{-1}{exp[-42000\div 8.314\times298]}\\K=8\ \times10^{10} s^{-1}{exp[-16.95]}\\K=4.35\times10^{^{-8}}\times8.0\times10^{^{10}}s^{-1}\\K=34.8\times10^{2}s^{-1}\\](https://tex.z-dn.net/?f=K%3DA%7Bexp%5B-Ea%20%5Cdiv%20RT%5D%7D%5C%5CK%3D8%5C%20%5Ctimes10%5E%7B10%7D%20s%5E%7B-1%7D%7Bexp%5B-42000%5Cdiv%208.314%5Ctimes298%5D%7D%5C%5CK%3D8%5C%20%5Ctimes10%5E%7B10%7D%20s%5E%7B-1%7D%7Bexp%5B-16.95%5D%7D%5C%5CK%3D4.35%5Ctimes10%5E%7B%5E%7B-8%7D%7D%5Ctimes8.0%5Ctimes10%5E%7B%5E%7B10%7D%7Ds%5E%7B-1%7D%5C%5CK%3D34.8%5Ctimes10%5E%7B2%7Ds%5E%7B-1%7D%5C%5C)
K=3480s⁻¹
The value of rate constant obtained is 3480s⁻¹.