Give reason. (a) Copper metal is a pure substance (b) A copper metal alloy brass is a mixture

Which of the following organisms would likely be found on a decaying deer carcass (dead deer) ? a. Plant and animal b. Fungus and plant c. Bacteria and fungus d. All of the above

A student observed a chemical reaction in which the mass of the products was measured to be less than the mass of the reactants. How can this be explained?

If the products of a reaction are Co2 and 2H20, what is known about the reactants?

What is a physical intensive property?

Describe the behavior of an oxygen molecule in a sealed container

Two members of the Boron family owe their names to bright lines in their emission spectra. Indium has a bright indigo blue line (451.1nm) and Thallium has a bright green line (535.0 nm). What are the energies of these two spectra lines?

Whats the answer to 7/2 * 1/5?

Which statement correctly describes the relationship between reactant and yield? The actual yield is calculated from the amount of the excess reactant present. The actual yield is calculated from the amount of the limiting reactant present.

Balance the following reaction. Leave the box empty if no other coefficient is needed. C2H5 + O2 → CO2 + H2O

What three human body systems coordinate cause an arm to move