The density of air under ordinary conditions at 25oC is 1.19 g/L . How many kilograms (kg) of air are in a room that measures 11.0 ft * 11.0 ft and has an 10.0 ft ceiling?

You are performing an experiment in a lab to attempt a new method of producing pure elements from compounds. the only problem is that you do not know what element will form. by your previous calculations you know that you will have 6.3 moles of product. when it is complete, you weigh it and determine you have 604.4 grams. what element have you produced?

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

Joe shines white light into a bowl half full of water at an angle of incident of 27.5°. calculate the angle of refraction in the water given the indices of refraction for air and water are 1.00 and 1.36, respectively.