KBr + AgNO3 → KNO3 + AgBr Zn + 2HCI - H2 + ZnCl2 MgCO3 → MgO + CO2 2Fe(OH)3 - Fe2O3 + 3H20 Na2CO3 + Ca(OH)2 → CaCO3 + 2NaOH AgNO3 + HCl → AgCl + HNO3 Out of the chemical equations above, how many is (are) considered as a double replacement reaction? _​

Why is the structure of molecule important to its function?

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

Listenbase your answer to the question on the information below.nuclear radiation is harmful to living cells, particularly to fast-growing cells, such as cancer cells and blood cells. an external beam of the radiation emitted from a radioisotope can be directed on a small area of a person to destroy cancer cells within the body.cobalt-60 is an artificially produced radioisotope that emits gamma rays and beta particles. one hospital keeps a 100.0-gram sample of cobalt-60 in an appropriate, secure storage container for future cancer treatment.which choice represents the correct product for the beta decay of the co-60? fe-60ni-60fe-61ni-61