Which of the following equations violates the law of conservation of mass? . 2al + > 2alcl3 + 3h2. na2c2o4 + pb(no3)> pbc2o4 + 2nano3. 3mg + 2cr(no3)3 > 3mg(no3)3 + 2cr. agno3 + licl > agcl + lino3

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures

What is bromine+calcium iodide--> calcium bromide +iodine balanced