Windmill energy transformation

The chemical reaction that causes chromium to corrode in air is given by 4Cr+3O2→2Cr2O3 in which at 298 K ΔH∘rxn = - 2256 kJ ΔS∘rxn = - 549.

What event triggered the dramatic increase in atmospheric carbon dioxide concentration seen over the last couple of centuries?

Which of the following statements is a logical consequence of the second law of thermodynamics? A) If the entropy of a system increases, there must be a corresponding decrease in the entropy of the universe.

In a pith ball experiment, the two pith balls are at rest. The magnitude of the tension in each string is |T|=0.55N, and the angle between each string and a vertical line is θ=27.33∘.

In a chemical change the combination of what changes

What is the value of the charge that experiences a force of 2.4 * 10-3 N in an electric field of 6.8 * 10-5 N/C? A. 1.6 * 10-7 C B. 2.5 * 10-3 C C. 2.8 * 10-3 C D. 3.5 * 101 C

What is electromagnetism?

How much voltage is required to run 0.054 A of current through a 15 2 resistor? Use AV = IR. O A. 0.81 V O B. 1.2 V O c. 2.8x10²v O D. 3.6 x 10-3 v

Which one of the following crystal structures has the fewest slip directions and therefore the metals with this structure are generally more difficult to deform at room temperature? a. BCC b. FCC c. HCP d. BCT

What does equation of trajectory means? what do i get from tat equation? 0_o?