TUTORIAL RADIOCHEMISTRY by nur rahimah Said https://padlet.com/nurrahimahsaid/3z6sim3ghkzr Post your answer here en-us 2018-06-04 02:33:53 UTC 2025-10-05 18:17:37 UTC hello@padlet.com https://padletuploads.blob.core.windows.net/prod/80264060/cdf38ae2d21ee13c036196e76c1eb262/Backback.png Question 1 nurrahimahsaid https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265276199 •The charred bones of a sloth in a cave in Chile represent the earliest evidence of human presence in southern tip of South America. A sample of the bone has a specified activity of 5.22 disintegrations per minute per gram of carbon. If the ratio of 12C:14C in living organisms results in a specific activity of 15.3 disintegrations per minute per gram of carbon, how old (in unit of year) are the bones? Half life of 14C is 5730 years.]]> 2018-06-04 02:45:34 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265276199 Question 2 nurrahimahsaid https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265276253 •The radius (r) of a Uranium-235 nucleus is about 7.0x10-13 cm. The atomic mass of uranium is 235 amu. The nucleus is assumed to be spherical. 
•i) calculate mass (m) of the nucleus (in unit g)
•Ii) calculate (V) of the nucleus (in unit cm3) [Hint: V= (4πr3)/3]
•Iii) calculate the density (ρ) of the nucleus (in unit g cm-3)
]]> 2018-06-04 02:45:58 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265276253 Question 3 nurrahimahsaid https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265276528 •The radioactive potassium-40 isotope decays to argon-40 with half life 1.2x109 years

i) Write a balanced nuclear equation for this reaction

ii) A sample of moon rock is found to contain 18% potassium-40 and 82% argon-40 by mass. Calculate the age in unit year of the rock.
]]> 2018-06-04 02:47:57 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265276528 Mohd Ghazli B Mujiyo and Muhamad Amirul Afiq B Remli https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265309728 2018-06-04 07:28:42 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265309728 Tutorial https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265310037 1. Muhammad Faiz Idden Shah
2. Muhammad Hafiz Bin Istamam
3. Nur Nabila Binti Azman Shah]]> 2018-06-04 07:30:44 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265310037 Tutorial Que https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265310545 1. Ahmad Aruna
2. Amin Khalili]]> 2018-06-04 07:33:54 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265310545 TUTORIAL https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265310683 1. Muhammad Faiz Idden Shah
2. Muhammad Hafiz Bin Istamam
3. Nur Nabila Binti Azman Shah]]> 2018-06-04 07:34:40 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265310683 Mohd Ghazali B Mujiyo and Muhamad Amirul Afiq B Remli https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265311117 2018-06-04 07:36:36 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265311117 EXAMPLE 3 https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265311157 1. Muhammad Faiz Idden Shah
2. Muhammad Hafiz Bin Istamam
3. Nur Nabila Binti Azman Shah]]> 2018-06-04 07:36:48 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265311157 Tutorial https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265311296 Question 2
1. Ahmad Aruna
2. Amin Khalili]]> 2018-06-04 07:37:27 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265311296 Tutorial https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265311508 Question 3
1. Ahmad Aruna
2. Amin Khalili]]> 2018-06-04 07:38:28 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265311508 Tutorial (question 2 ) https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265311751 Nur izzati bt azhari
Siti nor atiqah bt abdul razak

]]> 2018-06-04 07:39:39 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265311751 Question 1 https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265313114 Nur izzati bt azhari
Siti nor atiqah bt abdul razak]]> 2018-06-04 07:46:05 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265313114 QUESTION 2 nrlaine https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265314018 1) nurul aine binti musa (2017875156)
2) Nurhafizatul nadhirah (2017411972)]]> 2018-06-04 07:51:08 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265314018 QUESTION 3 nrlaine https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265314264 1) nurul aine binti musa (2017875156)
2) Nurhafizatul nadhirah (2017411972)]]> 2018-06-04 07:52:48 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265314264 Question 2 https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265314390 Deana binti Amri
Nuramira binti Rusli]]> 2018-06-04 07:53:36 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265314390 QUESTION 1 nrlaine https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265314611 1) nurul aine binti musa (2017875156)
2) Nurhafizatul nadhirah (2017411972)]]> 2018-06-04 07:54:41 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265314611 Tutorial chap 4 Radioactive https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265314791 Mohamad Faiz Fauzan bin A.Wahid 
Mohd Shukor bin Abd Wahab ]]> 2018-06-04 07:55:36 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265314791 Question 3 https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265314800 Deana binti Amri
Nuramira binti Rusli]]> 2018-06-04 07:55:38 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265314800 NUR ALIA ATIQAH BINTI ALIAS (2017411998) JAMILIN RASHIDA BINTI ADNAN (2017855004) https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265315001 AS202EXAMPLE 13]]> 2018-06-04 07:56:28 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265315001 Mohamad Faiz Fauzan bin A.Wahid https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265315636 Mohd Shukor bin Abd Wahab ]]> 2018-06-04 07:59:36 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265315636 Question 3 https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265316356 Nur izzati bt azhari
Siti nor atiqah bt abdul razak

]]> 2018-06-04 08:03:23 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265316356 Question 1 https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265317086 Deana binti Amri
Nuramira binti Rusli]]> 2018-06-04 08:07:16 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265317086 Tutorial radioactive https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265317149 Amirul ashraf ali bin tahir mahmod
Miew mohamad fitri bin miew zahari]]> 2018-06-04 08:07:41 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265317149 NUR ALIA ATIQAH BINTI ALIAS (2017411998) JAMILIN RASHIDA BINTI ADNAN (2017855004) https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265317345 TUTORIAL ]]> 2018-06-04 08:08:35 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265317345 Tutorial radioactive https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265317760 Amirul ashraf ali bin tahir mahmod
Miew mohamad fitri bin miew zahari]]> 2018-06-04 08:10:58 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265317760 NUR ALIA ATIQAH BINTI ALIAS (2017411998) JAMILIN RASHIDA BINTI ADNAN (2017855004) https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265318032 TUTORIAL]]> 2018-06-04 08:12:20 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265318032 Tutorial radioactive https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265318260 Amirul ashraf ali bin tahir mahmod
Miew mohamad fitri bin miew zahari]]> 2018-06-04 08:13:36 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265318260 Tutorial radioactive https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265318518 Amirul ashraf ali bin tahir mahmod
Miew mohamad fitri bin miew zahari]]> 2018-06-04 08:15:01 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265318518 Tutorial syarifahhusna96 https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265323610 Syarifah Husna
Nur Zaharatul' Ain]]> 2018-06-04 08:40:06 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265323610 Tutorial syarifahhusna96 https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265324792 Syarifah Husna
Nur Zaharatul' Ain]]> 2018-06-04 08:45:05 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265324792 Tutorial syarifahhusna96 https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265325135 Syarifah Husna
Nur Zaharatul' Ain]]> 2018-06-04 08:46:39 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265325135 Tutorial https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265337591 Hanis Shaziera Khaidzir
Nur Fatihah Hanim Mohmad Hashim

]]> 2018-06-04 09:43:17 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265337591 Tutorial https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265341068 Hanis Shaziera Khaidzir
Nur Fatihah Hanim Mohmad Hashim]]> 2018-06-04 10:00:48 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265341068 Tutorial https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265341134 Hanis Shaziera Khaidzir
Nur Fatihah Hanim Mohmad Hashim]]> 2018-06-04 10:01:05 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265341134 Tutorial Radioactive Chemistry https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265341242 NUR AINI FATIHAH BINTI AZANI (2017412086)
NOOR INANI BINTI MAAROF (2017412096]]> 2018-06-04 10:01:38 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265341242 Tutorial Radioactive Chemistry https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265341694 NUR AINI FATIHAH BINTI AZANI (2017412086)
NOOR INANI BINTI MAAROF (2017412096]]> 2018-06-04 10:04:37 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265341694 Tutorial radioactive https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265350817 Amirul ashraf ali bin tahir mahmod
Miew mohamad fitri bin miew zahari]]> 2018-06-04 10:54:44 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265350817 Tutorial chapter 4 ( Radioactive Chemistry) https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265363468 NUR NAZIHAH BINTI SHAMSURI (201741058)

NUR AMIRA FAQIHAH BINTI MAHMOD (2017412024)

]]> 2018-06-04 12:03:12 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265363468 Tutorial chapter 4 ( Radioactive Chemistry) https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265363870 NUR NAZIHAH BINTI SHAMSURI (201741058)

NUR AMIRA FAQIHAH BINTI MAHMOD (2017412024)

]]> 2018-06-04 12:05:27 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265363870 Question 1 https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265395391 Nur ZatulHusna Binti Zulkifli ( 2017875838 )
Nuramirah Ainaa binti Jamil ( 2017411954 )]]> 2018-06-04 14:05:46 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265395391 Question 2 https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265397180 Nur ZatulHusna binti Zulkifli (2017875838)
Nuramirah Ainaa binti Jamil (2017411954)]]> 2018-06-04 14:13:06 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265397180 Question 3 https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265397892 Nur ZatulHusna Binti Zulkifli (2017875838)
Nuramirah Ainaa Binti Jamil (2017411954)]]> 2018-06-04 14:15:56 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265397892 Thank you for your answer and good luck for your final nurrahimahsaid https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265546173 2018-06-05 04:44:38 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265546173 welcome, madam. thank you to you too. thank you so much. kami appreciate. such a lovely lecturer. baik sgt. #roadtofinal pray for us 😊. syarifahhusna96 https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265575403 2018-06-05 08:15:41 UTC https://padlet.com/nurrahimahsaid/3z6sim3ghkzr/wish/265575403