<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div id="yui_3_16_0_ym19_1_1488561134912_6309">Okay, I am stumped! can someone give me a formula to calculate the weight of air at a particular psi per cubic foot.</div><div id="yui_3_16_0_ym19_1_1488561134912_6309">Thank you</div><div id="yui_3_16_0_ym19_1_1488561134912_6309">Hank</div></div></body></html>