The students data can be seen here. A chemical reaction clearly took place in the flask. One entry is missing: the mass of the system at the end of the experiment. What amount should be added to the data table? A) 485.68g B) less than 485.68g C) more than 485.68g D) cannot be determined

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?