If a balloon at 10 oc goes from 30l to 2l, what is the final temperature? question 4 options: 18.87 4.72 0.21 16,980.00 8490.00

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

What type of chemical bond is formed between two atoms of bromine 1. metallic 2. hydrogen 3. ionic 4. covalent

The molar mass of cu is 63.55 g/mol. the number of grams of cu produced in this reaction is .