A. 1.008 mg
B. 0.184 mg
C. 0.054 mg
D. 5.4 mg
Related Mcqs:
- Mass spectrometer is used to determine Mass number of isotopes and___________________?
A. Atomic number
B. Relative abundance
C. Electronic configuration
D. All of the above - A sample of an iron and oxygen ore has a mass of 35.8 grams. The iron in the compound has a mass of 27.9 grams. What is the percent iron in the ore?
A. 74% Fe
B. 75% Fe
C. 77% Fe
D. 78% FeSubmitted by: Muhammad Ali Kunbhar
- What is maximum number of electrons in an orbital with m (magnetic quantum number) = 3 ?
A. 6
B. 4
C. 3
D. 2 - When electrons collide with heavy metals than ___________ are produced?
A. Beta-rays
B. Alpha-rays
C. X-rays
D. Gamma-rays - The relative attraction of the nucleus for the electrons in a chemical bond is called _________________?
A. Ionization energy
B. Electron affinity
C. Electro negativity
D. None of the above - In Galvanic cell electrons flow from anode to cathode through__________________?
A. external electric circuit
B. salt bridge
C. movement of ions
D. all of the above - The specie which donates electrons to central metal atom in coordination sphere is called____________________?
A. anion
B. cation
C. Ligand is positively charged
D. acid - How many electrons are there in benzene to form delocalized electron cloud________________?
A. 3
B. 4
C. 6
D. 8 - In unsaturated hydrocarbons electrons favour___________________?
A. less reactivity
B. addition reactions
C. substitution reactions
D. none - Reactivity due to pi-electrons is present in_________________?
A. alkane
B. alkene
C. alkyne
D. both B & C
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