Answer is: a) I only.
Above critical temperature of CO₂, a gas cannot be liquefied no matter how much pressure is applied. Temperature and pressure above its critical point is called supercritical fluid and this is <span>intermediate between gaseous and liquid states.</span>
B)
oxygen is oxidized.
<h3>Further explanation</h3>
Given
photosynthesis reaction
6CO2 + 6H20 ⇒ C6H12O6 +
602
Required
the oxidation compound
Solution
Oxidation-reduction reactions or abbreviated as Redox are chemical reactions in which there is a change in oxidation number
Oxidation is an increase in oxidation number, whereas Reduction is a decrease in oxidation number.
In the photosynthetic reaction, oxidation and reduction reactions occur in:
CO2 to C6H12O6 : reduction
Oxidation number of C from +4 to 0
H2O to O2 : oxidation
Oxidation number of O from -2 to 0
Answer:
The temperature at which a glass transforms from a liquid to solid.
Explanation:
Glass transition temperature is defined for polymers, so is the temperature at above which the soft and ductile polymer changes into hard britle material. It basically increases the viscosity of the material. Glass transition temperature is less than the melting point temperature. So, the polymer initially showing liquid like characteristics after transition temperature shows solid like characteristics.
So, the correct answer is
The temperature at which a glass transforms from a liquid to solid.