物理题;当水的沸点为250度时,外界气压为几个大气压?

沸点250度对应的绝对压强是3976200Pa = 3.9762 MPa = 39.242 标准大气压
1atm(1标准大气压)=101325Pa
温度℃ → 压力 Pa → 压力 atm
100 → 101420 → 1.0009
110 → 143380 → 1.415
120 → 198670 → 1.9608
130 → 270280 → 2.6675
140 → 361540 → 3.5681
150 → 476160 → 4.6994
160 → 618230 → 6.1015
170 → 792190 → 7.8183
180 → 1002800 → 9.897
190 → 1255200 → 12.388
200 → 1554900 → 15.346
210 → 1907700 → 18.827
220 → 2319600 → 22.893
230 → 2797100 → 27.605
240 → 3346900 → 33.032
250 → 3976200 → 39.242 ****
260 → 4692300 → 46.309
270 → 5503000 → 54.31
280 → 6416600 → 63.327
290 → 7441800 → 73.445
300 → 8587900 → 84.756
http://webbook.nist.gov/cgi/fluid.cgi?TLow=100&THigh=300&TInc=10&Digits=5&ID=C7732185&Action=Load&Type=SatP&TUnit=C&PUnit=atm&DUnit=kg%2Fm3&HUnit=kJ%2Fkg&WUnit=m%2Fs&VisUnit=uPa*s&STUnit=N%2Fm&RefState=DEF

200℃时压力1.5540MPa，合15.54个大气压．
250℃水的沸点大概在4MPa多一点合40个大气压多．

该是每升高6度1Pa
我也记不清了