What type of reaction is represented by the following chemical equation? explain your answer. : )

2 na + 2 hcl → 2 nacl + h2

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

What is the percent by mass of oxygen in fe2o3

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.