9. Practice identifying elements, compounds, and mixtures by playing this game. Next, check the appropriate box for each of the substances below to identify whether each is a;
pure element,
a pure compound,
or a mixture.

Water
Oxygen Gas
Lemonade
Oil and Water in a Bottle
Iron
Methane Gas (CH4)
Salt (NaCl)
Graphite (made from
carbon atoms)

this is graded and timed pls hurry and help !!!

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?

Use the half-reactions of the reaction au(oh)3 + hi -> au +i2 +h2o to answer the questions

In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.