Zinc is a pure substance. How could you make a mixture from a 1.0-g zinc disc?
A)Compress the disc into a flatter shape.
B)Divide the disc into 5 small pieces.
C)Coat the disc with another pure substance, such as copper.
D)Place the disc in a beaker with 200 mL of sulfuric acid.

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).

What approach is required to balance the objectives of sustainable development? balancing the objectives of sustainable development requires a(n) .

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes