How do you find the percent concentration of a solution in this question? I don't understand how to do it​ quick i have got an exam plz

The reaction q+r2=r2q is found to be first order in r2 and

You have a sample of a gas that occupies a volume of 17ml at -111 degrees celsius. what volume does the sample occupy at 88 degrees celsius? show all work asap

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?