News | Job Vacancy | Tv/Interviews | Scholarships | Educations | Entertainment | Biography | Got Talent's | Phones | Super Stories | Sports News | Comedies | Business | Relationship | Tech | Movies Series | Search
Posted by: Mr. Babatunde« on: February 20, 2020, 12:54:28 PM »The solution to [Chemisry II] Atom , Mole , Formulae And Equations set via our computer base test. 1. The combining power of an element or radical is ? A. Atom B. Radical C. Valency ✔ D. Mole 2. A group of atom that functions as a single unit in chemical reactions is ? A. Atoms B. Radical ✔ C. Ionic bond D. Valency 3. The smallest particle of an element which can take part in a chemical reaction is ? A. Atomicity B. Electrons C. Atoms ✔ D. Protons 4. Law of conservation of mass states that ? A. Two element combine to form more than one chemical compound B. All pure sample of a chemical compound contain similar element C. Matter can neither be created nor destroyed but changes from one form to another ✔ D. Matter is made up of discrete particles 5. How many moles are there in 20g of CaCO3 ? When ( CaCO3 = 100) A. 0.2 Mole ✔ B. 2 Mole C. 0.1 Mole D. 4 Mole 6. What is the mass of 3 mole of oxygen, gas O2 ? When (O = 16) A. 32g B. 46g C. 16g D. 96g ✔ 7. The number of time the average mass of one molecule of it is heavier than one-twelfth the mass of one atom of carbon-12 is ? A. Molar mass B. Atomic number C. Relative Molecular Mass ✔ D. Relative Atomic Mass 8. Any atom or group of atoms which possesses an electric charge is ? A. Atoms B. Ions ✔ C. Proton D. Valency 9. The smallest particles of a substance which exist alone and still retain the chemical properties of that substance is ? A. Molar mass B. Molecule ✔ C. Matter D. Atomicity 10. Calculate the RMM of limestone CaCO3 When ( Ca = 40 , C = 12 O = 16 ) A. 68 B. 204 C. 100 ✔ D. 120
Russ Releases 2 New Songs ‘That’s My Girl’ & ‘Tired’ - Listen To Mp3 by Miss Ifeoluwa
[Today at 04:43:08 PM] Nas & DJ Premier Release New Song ‘Define My Name’ by Miss Ifeoluwa [Today at 04:41:09 PM] Travis Scott, Chris Brown & Sexyy Red Jump On Nicki Minaj’s ‘FTCU’ Remix Mp3 by Miss Ifeoluwa [Today at 04:36:07 PM] Logic Shares New Single ’44ever’ - Stream Mp3 by Miss Ifeoluwa [Today at 04:32:55 PM] BVAS brought sanity to elections in Nigeria — Osun REC, Agboke by Miss Ifeoluwa [Today at 02:32:14 PM]
|