what is meant by normal temperature and pressure?
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ɴᴛᴘ - ɴᴏʀᴍᴀʟ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ᴀɴᴅ ᴘʀᴇssᴜʀᴇ - ɪs ᴅᴇғɪɴᴇᴅ ᴀs ᴀɪʀ ᴀᴛ 20ᴏᴄ (293.15 ᴋ, 68ᴏғ) ᴀɴᴅ 1 ᴀᴛᴍ (101.325 ᴋɴ/ᴍ2, 101.325 ᴋᴘᴀ, 14.7 ᴘsɪᴀ, 0 ᴘsɪɢ, 29.92 ɪɴ ʜɢ, 407 ɪɴ ʜ2ᴏ, 760 ᴛᴏʀʀ).
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Explanation:
NTP - Normal Temperature and Pressure - is defined as air at 20oC (293.15 K, 68oF) and 1 atm (101.325 kN/m2, 101.325 kPa, 14.7 psia, 0 psig, 29.92 in Hg, 407 in H2O, 760 torr).
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