The answer is false if your talking about a chemical reaction
They must also possess a fixed crystalline structure (spatial arrangement of atoms and ions).
<h3>Structure of minerals</h3>
Minerals are those naturally occurring substances that are required for proper growth of living organisms.
It is found both on earth and in food substances such as calcium, magnesium, iron.
Minerals are known to have spatial arrangement of atoms and ions. Which means the ions and atoms are not randomly arranged.
Therefore, minerals are all naturally occurring solid substances with a definable chemical composition because it possess a fixed crystalline structure.
Learn more about minerals here:
brainly.com/question/89259
How many protons are in am element
This question is incomplete, the complete question is;
Tonksite is a solid at 300.00K. At 300.00 K its enthalpy of sublimation is 66.00 kJ/mol. The sublimation pressure at 300.00 K is 5.00 × 10⁻⁴ atm
Calculate the sublimation pressure of the solid at the melting point of 400.00 K assuming that the enthalpy of sublimation is not a function of temperature.
Answer: the sublimation pressure of the solid at the melting point is 0.3727 atm
Explanation:
Given that;
T1 = 300 K
T2 = 400 K
H_sub = 66 kJ/mol = 66000 J/mol
P1 = 5.00 × 10⁻⁴ atm
p2 = ?
now using the expression
log( p2 / 5.00 × 10⁻⁴ ) = (H_sub / R × 2.303 ) (( T2 - T1) / T1T2)
now we substitute of given values into the expression
log(p2/p1) = (66000 / 8.314 × 2.303 ) (( 400 - 300) / 300 × 400 )
p2 = 0.3727 atm
therefore the sublimation pressure of the solid at the melting point is 0.3727 atm
