Which temperature do they need to perform the experiment for perovskite to conduct electric current? A: T=1980°C
B: T>1980°
C: T>_ 1980°C
D:T< 1980°C

For C it's suppose to be an less than equal sign .

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

Choose all the answers that apply. ionic compounds dissolve easily in water do not dissolve in water have low melting points have high melting points conduct electricity when melted