Torque can be calculated by multiplying the force (N) applied at 90 degrees to the lever arm at a distance (m) from the pivot point (point of rotation), the compound SI unit for the torque is N.m. If the force (at 90 degrees to the lever arm) applied is 15 N and it applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?

Balance the following equation:      Fe2O3(s)+C(s)⟶Fe(s)+CO(g)Fe2O3(s)+C(s)⟶Fe(s)+CO(g)   Express your answer as a chemical equation. Identify all of the phases in your answer.

4. An alloy has an elastic modulus of 115 GPa. For the alloy, plastic deformation begins at a stress of 275 MPa. (a) If a sample of cross-sectional area 325 mm? is obtained from the alloy, determine the maximum load that may be applied on the sample without plastic deformation. (b) The original sample length is specified as 115 mm, what is the maximum length to which the sample can be stretched without plastic deformation.

Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on.