Ĵʡصڶѧ2020߿ѧڵڶӦԿ
õԭC-12 N-14 O-16 S-32 C1-35.5 Ba-137 Cu-64 Na-23
I ѡ⣨126֣
һѡ⣺13С⣬ÿС6֣78֡ÿСĸѡУֻһǷĿҪġ
1.ʵУܵ½ƫС
AijѹӢȺܶʱ BͶز Cڸ߶Ƚӻߵļϵ߶Ƚӵķ DδҡԹĸҺԽĸ 2йϸ
AΪеĶԶܴŴϢ B˥ϸΪˮļٶʹϸС
Cڸ½ṹɢױ DǿԱԿͨע
3ͼ̽ӰĸȺ仯ʱʵйطȷ
AMNʱڽĸϸղǾƾͶ̼ BNPʱڽĸڵĸȶ CͼʾMNʱڽĸڶ̶ȵı仯Ϊǿ DĸȺp㿪ʼ½ҺpH½й
4ת¼γmRNAʱʱγԷDNA-RNAӽΣγṹΪRֽṹӰDNAơת¼ͻȶԡ˵ AӺƬһ़ BDNA-RNAӽ8ֺ Cת¼ʱҲγDNA-RNAӽ DmRNAԴDNAϷͱ
5μеijֲϸҺĤһ嵰ףܽϸʻеNa+ŨݶҺݣNa+ϸʻø˺
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ANaҺݵĹܻ¶ȵӰ BNaҺϸķʽͬ
C嵰õĽϸҺѹ D嵰õĽǿֲ
6Ⱥڴֱϵķֻ״ΪȺĴֱṹֳΪֱֲ磬ɭľľݱ͵رȲΡй Aˮķֲ⡢
BɭеĶֲԣڶԿռʳԴij CݵرԵֲʹڲڴֱֲ DȺĽУȺĴֱṹı 7.ѧءй˵ȷ Aչ̼áܹٶԻʯԴ Bˮ壬ʿˮ CƷڳʪĿ⣬ҪԭǷⸯʴ
DCu2?ķˮFeSΪCuSܽȱFeSС 8NAʾӵֵ˵ȷ A1mol Na2O2Na2OĹУΪ3NA B1mol ƷӦתƵĵΪ4NA
C״£2.24L N2O2ĻзΪ0.2NA D״£56 g Fe22.4 L Cl2ȫӦתƵΪ3NA 9ϩϳάȾϡҩṹʽͼ˵ȷ A뱽ϩ
Ϊͬ칹
Bһȴ2 DΪҺ̬ˮ
ʾй
++
C1molȼգ9 mol O2
10һҪĹҵԭϡҵзӦܵǷ©3Cl2+8NH3=N2+6NH4Cl˵
Aа̲ܵ© B÷ӦNH4Clǻԭ
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CӦNH3ֻԻԭ D1.4gN2ʱת0.3mol
11XYZԭεĶԪأ3 ԪصԭӺ֮CaĺȣXZֱõһӺγϡԭӵȶӲṹ˵ȷ
AԭӰ뾶ZYX
BZ X γɻķеZ ͬԪ Xγɻķе CCaY2 ˮԭӦʱCaY2ֻ
DCaX2CaY2CaZ2 3ֻУӸȾΪ 12
12ݱҹƳɳơ̼ء缫ΪƽƬ̼ܣҺΪһĸʴѣܷӦΪ:4Na+3CO2̼ϣȷ AŵʱƽƬӦ
Bŵʱÿ3mo1C02ת12mol
2Na2CO3+CɹNa2CO3
2
Cʱֱ̼ܽԴ DʱӦΪC+2Na2CO3-4e-=4Na++3CO2 13T ʱ(Ag2CrO4)ˮҺеijܽƽͼʾ˵вȷ
AAg2CrO4ҺмK2CrO4ʹҺYΪX BTʱYZ㣬Ag2CrO4Ksp CTʱAg2CrO4 KspֵΪ 110-11 Dͼa?2?10?4
ѡ⣺8С⣬ÿС6֣48֡ÿСĸѡУ14~18ֻһĿҪ19~21жĿҪȫѡԵĵ6֣ѡԵȫĵ3֣ѡĵ0֡
14.ͼʾһһ˹̶ֱǽϣһAСͬʱˮƽϸһAһ˹̶Ҳֱǽϣֱļн60㣬ABСֱһֱˣʼʱABֹABСȣٶΪ
gƵˮƽϸ߱˲䣬ABļٶȷֱΪ
A. aAaBg B.aA2gaB0
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C.aA3gaB0 D.aA23gaB0
15.ͼʾΪABͬһλ-ʱͼ˵ȷ
A. 02sAB˶˸ı B. 1.5sĩABٶͬ C. 01.5sʱڣAƽٶȵBƽٶ D. 025AB֮Ϊ3m
16.һƵԲ˶AB˶Զصͽص㣮˵ȷ
AAĽٶȴBĽٶ BAļٶСBļٶ CA˶BжܼС DA˶Bе
17.ҹЩ½ƵΪ˼PM2.5ָijƼСһֱװã·ԭͼʾRLǶPM2.5еĵԪPM2.5ָʱS˵ѹEΪ費ƵĵԴRΪһɱ裬˵ȷ
A.PM2.5ָʱRLֵ B.PM2.5ָʱAʾС C.PM2.5ָʱɱR˵ѹ D.ʵɱRֵ߱
18.ͼʾһ̶ˮƽõıպϵԲϷһδhɾֹʼ䣬ˮƽϣʼձֱԲĴԲԲӴƿٶΪg˵ȷ
A.ڴУԲеĸӦʱ˳ʱ(¿Բ)
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