How many different kinsds of polypeptides, each composed of 12 amino acids, could be synthesized using 20 common amino acids?

Write the net ionic equation for the reaction of zinc metal with aqueous iron (II) nitrate. Include physical states.

Silver tarnishing is an example of User: alcohol freezing is an example of

Consider the following balanced reaction between hydrogen and nitrogen to form ammonia: 3H2 (g) + N2 (g) →2NH3 (g) How many moles of NH3 can be produced from 19.0 mol of H2 and excess N2?

10. How any grams of N He are required to produce 120 grams of HNO3, assuming H2O2 is present in excess? N2H4 + 7 H2O2 → 2 HNO3 + 8 H2O H2O2 N2H4 32 HNO3 63 H2O 18 34 Molar Mass (g/mol)

A student weighs a container and then adds air. When the student weighs the container again the weight will be: a. less b. more than c. the same

Match the following terms to their correct examples Conduction Convection Radiation Water warming on a stove The sun warming the earth A spoon resting in a cup of tea gets hot

Why are 3 ammonium groups needed for every 1 nitride ion?

How do you explain the relativity high conductivity of tap water compared to a low or zero conductivity for distilled water

According to Newtons's first law, which characteristic of a moving object would remain constant if there were no other force of acting of it? A. Size B. Mass C. Shape D. Speed

Standard reduction potentials are 1.455 V for the PbO2 (s) / Pb (s) couple, 1.82 V for Co3 (aq) / Co2 (aq), 3.06 V for F2 (g) / HF (aq), 1.07 V for Br2 (l) / Br - (aq), and 1.77 V for H2O2 (aq) / H2O (l).