Before you touch an electrical switch, plug, or outlet
a). your hands must be dry
b). hands must be clean
c). ask the custodian
d). ask the nurse

Does the energy in a solid increase or decrease when changing to a liquid?

Base your answer on the information below and on your knowledge of chemistry. nitrogen dioxide, no2, is a dark brown gas that is used to make nitric acid and to bleach flour. nitrogen dioxide has a boiling point of 294 k at 101.3 kpa. in a rigid cylinder with a movable piston, nitrogen dioxide can be in equilibrium with colorless dinitrogen tetroxide, n2o4. this equilibrium is represented by the equation below. 2no2(g) n2o4(g) + 58kj at standard pressure, compare the strength of intermolecular forces in no2(g) to the strength of intermolecular forces in n2(g).

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?