The powder-based packet to purify water failed for a number of reasons including Select one: a. Rust b. Expense c. Sales personnel who marketed the water were not natives of the villages or urban neighborhoods where the water was needed impurities d. Contamination

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

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