23.70公斤7小時= ?mg/min

詳解 (共 1 筆)

詳解 提供者：恐虐狂戰士

解答:

mg/m3 = (ppm×氣狀有害物之分子量(g/gmole) ÷24.45

=ppm*M/24.45

70kg/7hr=(70*1000)/(70*60)

=70000g /60 min

=1166.67 g/min

mg=毫克=0.001g=1/1000g,

1g=1000mg

1166.67 g/min

=1166.67*1000

=1,166,666.67