Astudent measures the mass of a sample of a metallic element, mm. then the student heats the sample in air, where it completely reacts to form the compound momo. the student measures the mass of the compound that was formed. which of the following questions can be answered from the results of the experiment

How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

What is the molar mass of ca(cio4)2