Row_ID int64 1 30.2M | Topic stringclasses 3
values | Subtopic stringclasses 4
values | Question stringclasses 13
values | Answer_1 stringclasses 11
values | Explanation_1 stringclasses 12
values | Answer_2 stringclasses 11
values | Explanation_2 stringclasses 11
values | Answer_3 stringclasses 0
values | Explanation_3 stringclasses 0
values | Difficulty stringclasses 2
values |
|---|---|---|---|---|---|---|---|---|---|---|
30,179,901 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,902 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
30,179,903 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
30,179,904 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
30,179,905 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
30,179,906 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
30,179,907 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
30,179,908 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
30,179,909 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,910 | Organic Chemistry | Alkenes | HCl+1-butene product? | unknown | HCl adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
30,179,911 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
30,179,912 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
30,179,913 | Organic Chemistry | Alkenes | HBr+1-butene product? | 2-bromobutane | HBr adds; yields 2-bromobutane. | sec-butyl bromide | Same: sec-butyl bromide. | null | null | Hard |
30,179,914 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
30,179,915 | Organic Chemistry | Alkenes | HBr+1-methylcyclohexene product? | 1-bromo-1-methylcyclohexane | HBr adds; yields 1-bromo-1-methylcyclohexane. | 1-methyl-1-bromocyclohexane | Same: 1-methyl-1-bromocyclohexane. | null | null | Hard |
30,179,916 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
30,179,917 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
30,179,918 | Organic Chemistry | Alkenes | HBr+1-butene product? | 2-bromobutane | HBr adds; yields 2-bromobutane. | sec-butyl bromide | Same: sec-butyl bromide. | null | null | Hard |
30,179,919 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
30,179,920 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,921 | Organic Chemistry | Alkenes | HCl+1-methylcyclohexene product? | unknown | HCl adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
30,179,922 | Organic Chemistry | Alkenes | HCl+2-methylpropene product? | 2-chloro-2-methylpropane | HCl adds; yields 2-chloro-2-methylpropane. | tert-butyl chloride | Same: tert-butyl chloride. | null | null | Hard |
30,179,923 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
30,179,924 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
30,179,925 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,926 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
30,179,927 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
30,179,928 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
30,179,929 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
30,179,930 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
30,179,931 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
30,179,932 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,933 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
30,179,934 | Organic Chemistry | Alkenes | HCl+1-methylcyclohexene product? | unknown | HCl adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
30,179,935 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,936 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
30,179,937 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
30,179,938 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
30,179,939 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
30,179,940 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
30,179,941 | Organic Chemistry | Alkenes | HCl+1-butene product? | unknown | HCl adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
30,179,942 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
30,179,943 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
30,179,944 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
30,179,945 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,946 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
30,179,947 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
30,179,948 | Organic Chemistry | Alkenes | HCl+2-methylpropene product? | 2-chloro-2-methylpropane | HCl adds; yields 2-chloro-2-methylpropane. | tert-butyl chloride | Same: tert-butyl chloride. | null | null | Hard |
30,179,949 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
30,179,950 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,951 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
30,179,952 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
30,179,953 | Organic Chemistry | Alkenes | HCl+1-methylcyclohexene product? | unknown | HCl adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
30,179,954 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
30,179,955 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,956 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,957 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
30,179,958 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
30,179,959 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
30,179,960 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
30,179,961 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
30,179,962 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,963 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,964 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,965 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,966 | Organic Chemistry | Alkenes | HCl+2-methylpropene product? | 2-chloro-2-methylpropane | HCl adds; yields 2-chloro-2-methylpropane. | tert-butyl chloride | Same: tert-butyl chloride. | null | null | Hard |
30,179,967 | Organic Chemistry | Alkenes | HCl+2-methylpropene product? | 2-chloro-2-methylpropane | HCl adds; yields 2-chloro-2-methylpropane. | tert-butyl chloride | Same: tert-butyl chloride. | null | null | Hard |
30,179,968 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
30,179,969 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
30,179,970 | Organic Chemistry | Alkenes | HCl+1-methylcyclohexene product? | unknown | HCl adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
30,179,971 | Organic Chemistry | Alkenes | HCl+1-methylcyclohexene product? | unknown | HCl adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
30,179,972 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
30,179,973 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
30,179,974 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,975 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
30,179,976 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,977 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,978 | Organic Chemistry | Alkenes | HBr+1-butene product? | 2-bromobutane | HBr adds; yields 2-bromobutane. | sec-butyl bromide | Same: sec-butyl bromide. | null | null | Hard |
30,179,979 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
30,179,980 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
30,179,981 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
30,179,982 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
30,179,983 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,984 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
30,179,985 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,986 | Organic Chemistry | Alkenes | HBr+1-methylcyclohexene product? | 1-bromo-1-methylcyclohexane | HBr adds; yields 1-bromo-1-methylcyclohexane. | 1-methyl-1-bromocyclohexane | Same: 1-methyl-1-bromocyclohexane. | null | null | Hard |
30,179,987 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
30,179,988 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
30,179,989 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
30,179,990 | Organic Chemistry | Alkenes | HCl+1-butene product? | unknown | HCl adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
30,179,991 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
30,179,992 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,993 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
30,179,994 | Organic Chemistry | Alkenes | HBr+1-methylcyclohexene product? | 1-bromo-1-methylcyclohexane | HBr adds; yields 1-bromo-1-methylcyclohexane. | 1-methyl-1-bromocyclohexane | Same: 1-methyl-1-bromocyclohexane. | null | null | Hard |
30,179,995 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,996 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
30,179,997 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
30,179,998 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
30,179,999 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
30,180,000 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
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