Sometimes a group of covalently bonded atoms can act like a single atom when combining with other atoms. these covalently bonded groups possess a charge and usually form ionic bonds with other atoms. these groups are otherwise known as

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

What does the xylem do? stores the glucose captures the sunlight absorbs oxygen into the leaf carries water from the roots to the leaves

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