How much chalcopyrite had to be mined to produce 100 pennies if reaction 1 had a percent yield of 68.00 % and all other reaction steps had yield of 100%?

A engineer measures the peak power output is 0.3227MW what is the peak power output in kilowatts?

The Ba (OH) 2 dissociates as Ba^ (+2) + 2 OH^ (-). H2SO4 dissociates as 2 H^ (+) + SO4^ (-2). Write a balanced equation for this reaction.

Describe what happens when two substances at different temperatures come into contact. Describe how the law of conservation of energy applies to this system.

A student performed the same experiment but used radish sprouts. their data showed three peaks for the optimal ph at 2.4, 8.5, and 10.6. propose a logical hypothesis for the observed data.

A 2.950*10-2 M solution of glycerol (C3H8O3) in water is at 20.0∘C. The sample was created by dissolving a sample of C3H8O3 in water and then bringing the volume up to 1.000 L. It was determined that the volume of water needed to do this was 998.

Which is NOT a property of gold? A. rare B. tarnishes C. malleable D. corrosion resistant

The element rubidium has two naturally occurring isotopes. The atomic mass of 85Rb (72.17 percent abundant) is 84.911794 amu. Determine the atomic mass of 87Rb (27.83 percent abundant). The average atomic mass of Rb is 85.4678 amu.

Describe what you can do to slow down, or stop the continuous negative human treatment of our aquatic biomes.

If the hydrogen ion concentration is 10-7M, what is the pH of the solution? Show all work.

When it is raining water is returning to earth as a water cycle stage called