#!/usr/bin/python
# -*- coding: UTF-8 -*-
class Chemical:
empCount = 0
def __init__(self, chemical_name, molecule_weight, bulk_state, density):
self.chemical_name = chemical_name
self.molecule_weight = molecule_weight
self.bulk_state = bulk_state
self.density = density
KOH = Chemical("KOH", 56.11, 'p', "")
NaOH = Chemical("NaOH", 39.996, 'p', "")
NaCA = Chemical("NaCA", 258.07, 'p', "")
AA = Chemical("AA", 176.12, 'p', "")
H2SO4 = Chemical("H2SO4", 98, 'l', 1.831)
C2H5OH = Chemical("C2H5OH", 46.07, 'l', 0.8)
CH3OH = Chemical("CH3OH", 32.04, 'l', 0.79)
molecules = [KOH, NaOH, NaCA, AA, H2SO4, C2H5OH, CH3OH]
print('Chemical name list:\n [1] KOH \n [2] NaOH \n [3] NaCA \n [4] AA \n [5] H2SO4 \n [6] C2H5OH \n [7] CH3OH \n')
start = 1
while start:
num = input("请输入药品序号：")
num = int(num) - 1
concentration = input("请输入浓度/M：")
concentration = float(concentration)
bulk = input("请输入体积/ml：")
bulk = float(bulk)
if molecules[num].bulk_state == 'p':
mass_mg = concentration*molecules[num].molecule_weight*bulk
print('Using', molecules[num].chemical_name, " ", mass_mg, "mg\n")
elif molecules[num].bulk_state == 'l':
bulk_ml = 0.001*concentration * molecules[num].molecule_weight * bulk/molecules[num].density
print('Using ', molecules[num].chemical_name, " ", str(bulk_ml), " ml\n")
