Pick the output(s) in this system. (select all that apply) You burn a piece of wood in your fireplace to heat your home.
Sound Kinetic Energy

Thermal Kinetic Energy

Radiant/Light Kinetic Energy

All of these are outputs of a log burning

Chemical Potential Energy

Electrical Kinetic Energy

None of these are outputs of a log burning

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

What is the area in square meters of 448 g ai foil that has a thickness of 23921 nm? the density is 2.70 g/cm