Oromia teachers forums

Which of the following is a limitation of the Henderson-Hasselbalch equation?
A) It can only be used for strong acids.
B) It is only applicable at very high concentrations.
C) It is most accurate for weak acids and their conjugate bases.
D) It cannot be used for buffer solutions.

Which of the following is a characteristic of Lewis acids?**
a) They must contain hydrogen.
b) They accept electrons.
c) They donate protons.
d) They produce hydroxide ions in solution

Which of the following statements is true regarding Arrhenius bases?
a) They produce protons in solution.
b) They produce hydroxide ions in solution.
c) They can accept protons.
d) They are always soluble in water.

Big shout out to my newest top fans! Abdallaa Muhammad, Hussen Molla, Kefyalew Gudeta Abetu, Firomsa Kitata, Kiya Ko, Haqa Dabe, Jemal Jemal, Gabbaramaan DhugaaIsaqofa, Chaltuobsaa Ziyad, Abdulalim Adam, Getnet Balemwal, Milion Fikadu, Diriba Adamu, One T hundumtuu , Abdi Jafer, Makkoo Tombee, Tadele Hailu, Alhaji Bangura, Akasaf Jirata, Alemu Zenebe, Robe Adugna, Khaayoo Qamna Khaayomsi Waaqa, Abdurree Ka Jamaal , Medina Love, Ra'is Jamal Jamal, Harife mahamed, Chara T Bekere, Kasso Aliye, Ashannaafii Efreem, Sekata Gerba, Abdi Lechisa, Abdi Abdulla, Abiyot Mulatu Segni, Lakkii Nu Dhiisaa, Tamiru Dereje, Magarsaa Hamid, Roman Abera, Kader Jemal, Agegnew Dika, Mokonen Sh Hordofa, AhmedNaasiir Hassen, Hassan Ibrahim, Abush Abebe, Melkamu Shefara, Fuad Amin, Alexis Getaneh, Dawit Beyene, Selam Selam, Gemechu Debesa, Amatan Shukri

Maths Questions
1. If f(x) = 2x² - 3x + 5 , what is f(3) ?
a) 14
b) 20
c) 10
d) 12
2. Solve for x : 3(x - 4) = 2(x + 1)
a) 5
b) 6
c) 4
d) 7
3. What is the value of x in the equation 2 / 3x + 5 = 11 ?
a) 6
b) 9
c) 12
d) 15
4. A triangle has sides of lengths 7 cm, 24 cm, and 25 cm. Is this triangle a right triangle?
a) Yes
b) No
c) Cannot be determined
d) Only if the angles are known
5. If the area of a circle is 50π , what is its radius?
a) 5
b) 10
c) 25
d) 20
6. In a right triangle, if one angle measures 30^\circ , what is the measure of the other non-right angle?
a) 60^\circ
b) 45^\circ
c) 30^\circ
d) 90^\circ
7. The sum of the angles in a pentagon is:
a) 540^\circ
b) 360^\circ
c) 720^\circ
d) 180^\circ
8. If x² - x - 6 = 0 , what are the roots of the equation?
a) -3, 2
b) -2, 3
c) -1, 6
d) -4, 5
9. What is the slope of the line represented by the equation y = -3x + 4 ?
a) -3
b) 3
c) -4
d) 4
10. If the function g(x) = x³ - x , what is g(2) ?
a) 6
b) 4
c) 0
d) 8
Easy-Level Questions
1. What is 5 + 7 ?
a) 11
b) 12
c) 13
d) 14
2. What is 9 - 4 ?
a) 4
b) 5
c) 6
d) 7
3. What is the value of 8 ÷ 2 ?
a) 4
b) 2
c) 8
d) 1
4. What is 3² ?
a) 6
b) 9
c) 12
d) 15
5. If you have a rectangle with length 4 and width 3 , what is its area?
a) 12
b) 7
c) 10
d) 15
6. What is the next number in the sequence: 2, 4, 6, ... ?
a) 7
b) 8
c) 9
d) 10
7. What is x , if x + 5 = 10 ?
a) 3
b) 4
c) 5
d) 6
8. How many sides does a hexagon have?
a) 5
b) 6
c) 7
d) 8
9. What is the value of | -7 | ?
a) -7
b) -1
c) 7
d) None of the above

Shout out to my newest followers! Excited to have you onboard! Tasfaayee Waaqtolee, Sintayehu Denbi, Hassen Kassim, Boju Wakshuma Ra, Godoo Horaa, Mohammed Kelif, Dawit Negeri Urgesa, Fariha Shamun, Ameen Milkii, Tayitu Teshome, Sali Shiferaw, Sufian Aliye, Zaakir Ps Kamal, Mohammed Ahmed Hassen, Kee'olit Waaqa Sifoo, Gts Mt, Feyisa J. Bacha, Adugna Warki, Habtamu Chali Regassa, Tuulii Baqalaa, Desalegn Agumas, Dawit Belete, Muktar Nasir Yasin, Feyissa Gutema, Abdi Yuya, Fanta Menkir Yasin, Tadesse Bachere, Bruke Guta, Mohammed Jaarsoo Gurro, Goshu Kasim, Gurmesa Feyisa, Abdulhakiim Taajur Huseen, Wesenu Chaka Boset, Onesimos Terfasa Defa, Shimelis Girma, Börkèèf Nì Mõõna, Gannatii F. Ayana, Sanyii Oromoo Geleto, Derese Wendimu, Galma Jaldesa Boru, Sanyii Koo Turuna Tola, Sanyii Lammii, Masarat Amansisa, Tsion Keba, Abdi Negeri, Adam Saman, Bulcha Qabata, Saboom Biratu, Yadi Ragasa, Naaroobikaa Ayana

Big shout out to my new rising fans! Booni Giduma, Hanbasa Hanbasa, Ahmad Alisho, Evelyn Favour, Orom Oroomsaa, Sena Tezera, Kayyoo Ahmed Abdu, Mohammed Ibn Jeilan, Asnake Gosa, Reta Wakjira, Diriba Lema, Bilisumma Oromoo, Abdeta Keneni, Kumaa Ka Ijjiguu, Weldekidan Medhanye, Melese Adefris, Gebreyesus Mekuria, Zamzam Yabo, Nehemiah Eyob, Firomsaa Odaa Firomsaa, Sadam Khan, Qalii Nama, Gezai Gebru, Damma Duuba, Dinka Ifa

Which of the following is a common application of voltaic cells?**
A) Powering electronic devices
B) Powering electric vehicles
C) Supplying energy for batteries
D) All of the above

Atomic model study notes #chemistrynotes #exampreparation