根据图示情景和范例,编写计算题,并完成相关内容。
【情景1】要配制一定质量分数、一定质量的氯化钾溶液,应该怎么操作?
(1)编题范例 配制10%的氯化钾溶液50g,分别需氯化钾固体和水各多少?
(2)配制该溶液的操作步骤
①计算:
②称量:用托盘天平称取所需固体,再用 mL的量筒量取所需的水;
③溶解:将称得的氯化钾固体放入烧杯中,再倒入量取的水,用玻璃棒充分搅拌;
④装瓶:将配制的溶液倒入试剂瓶,并贴上标签。
【情景2】已知一定质量分数、一定质量的氢氧化钾溶液与一定质量的盐酸反应,得到只有一种溶质的溶液,求算反应后溶液的溶质质量分数。
(1)编写题目
(2)计算过程
第二篇:计算题示例
可比价,隐含的GDP隐含的GDPGDP;某年价缩减指数缩减指数
格表示
GDP78年价格78年为178年为112.2033.40-4.702.5023.6013.5029.8024.403.30-35.90-14.509.0015.9021.506.20-12.107.9022.6017.509.004.307.8010.504.30-5.903.6020.9010.0010.004.804.308.3019.3010.605.807.605.801.605.406.0011.7012.0714.3014.9114.3012.079.3410.0410.8012.0213.340.9617.790.9916.961.0017.380.9821.480.9624.380.9931.651.0339.371.0540.671.0526.071.0922.291.0924.301.1028.161.0934.221.0536.341.0831.941.0534.461.0142.251.0149.651.0354.111.0256.441.0060.840.9967.230.9970.120.9965.990.9968.360.9982.651.0090.921.02100.011.04104.811.03109.311.04118.391.04141.241.04156.211.12165.271.18177.831.24188.141.38191.151.48201.471.54213.561.60238.551.72267.332.02305.562.40351.112.65401.322.80449.772.81491.772.80541.142.77599.582.84671.682.860.960.991.000.980.960.991.031.051.051.091.091.101.091.051.081.051.011.011.031.021.000.990.990.990.990.991.001.021.041.031.041.041.041.121.181.241.381.481.541.601.722.022.402.652.802.812.802.772.842.86
915.6112.67
1051.4214.83
1217.9615.84
1399.4314.90
1605.1514.70
1853.9515.50
2159.8516.50
2516.2316.50
2954.0517.40
3438.5116.40
以后,新中国50年统计资料汇编,《中国国内生产总值核算历史资料最后更新756.752.842.84869.002.972.971006.643.093.091156.633.383.381326.663.363.361532.293.433.431785.123.763.762079.663.623.622441.523.783.782841.933.983.981952-1995》,《中国国内生
现价指数隐含的GDP
缩减指数
上年为1
137.341.0396.591.01100.820.98120.910.98116.471.03134.761.04126.961.02103.421.0066.601.0485.361.00109.901.01114.780.99117.550.97109.321.0385.530.97103.420.96123.301.01118.941.01108.100.99102.270.98107.030.99110.541.00104.561.0093.580.99103.801.00122.031.01112.521.02111.311.01104.291.00105.691.01108.151.00119.511.00119.151.08110.791.05113.011.05118.021.12109.131.07109.741.04110.231.04119.981.07131.051.17135.991.19127.161.11120.381.05112.721.01108.700.99109.190.99113.391.02112.761.011100.001.06106.001.184118.401.327132.691.517151.661.743174.271.9922.2322.4412.6862.976
112.07119.87120.67125.54114.26117.70127.91111.95122.64122.58-1995》,《中国国内生产总值核算历史资料0.991.041.041.091.001.021.100.961.041.051952-2004》历史资料1952