Identify the double displacement reactions among the following: 1. kcl(aq) + agno3(aq) - agcl(s) + kno3(aq) 2. na2so4(aq) + bacl2(aq) →baso4(s) + 2nacl(aq) 3. h2so4((aq) + 2naoh(aq) na2so4((aq) + 2h2o(1) a) 1 and 3 only b) 2 and 3 only c) 1 and 2 only d) all of 1, 2, and 3 e) none of 1, 2, and 3

In 2002, the rare earth elements mine in mountain pass, california was closed because

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.