Answer:
it is the app for homework not for nonsense things.
do good be good and see good and think good
You should always do A. form a hypothesis before performing an experiment also the other options cannot happen until after an experiment.
It's the rows. They are periods. (1,2,3,4,5,6,7 - the ones without the letters).
Answer:
Volume occupied by oxygen gas at 15 degree centigrade is equal to 
centimeter cube
Explanation:
Assuming Pressure is constant.
where T1 and T2 are temperature in Kelvin
Substituting the give values we get-
Volume occupied by oxygen gas at 15 degree centigrade is equal to centimeter cube
Non-metals and oxygen produce non-metal oxides. Such as sulphur dioxide and nitrogen oxide which are responsible for acidic rain. Hope this helps
