The enzyme "catalase" catalyzes the decomposition of hydrogen peroxide by the exothermic reaction:
H2O2 (aq) → H2O (l) + ½ O2 (g)
Estimate the minimum detectable concentration of hydrogen peroxide if a small amount of catalase (a solid) is added to a hydrogen peroxide aqueous solution in a calorimeter. Assume that a temperature rise of 0.02°C can be distinguished. You can use a heat capacity of 4.184 kJ kg⁻¹ K⁻¹ for the hydrogen peroxide solution.

- aluminum and copper chloride.

- the chloride ion to separate the aluminum from the oxygen so that the aluminum can react with the copper ions (and the water molecules).

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

c, liquids evaporate, creating a gas