JU
A sample of Oxygen gas has a veu volume of 28.12
a stp. How mang males of Oxygen gas cure in the sample

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

How are isotopes of the same chemical element alike? how are they different?

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt