Calculate the mass percent of magnesium in the formation of magnesium oxide.(a) 0.3(b) 1.5(c) 0.67(d) 0.6The question was posed to me during an online interview.I would like to ask this question from Stoichiometry and Stoichiometric Calculations in division Chemistry Basic Concepts of Chemistry – Class 11

Calculate the mass percent of magnesium in the formation of magnesium

1.	Calculate the mass percent of magnesium in the formation of magnesium oxide.(a) 0.3(b) 1.5(c) 0.67(d) 0.6The question was posed to me during an online interview.I would like to ask this question from Stoichiometry and Stoichiometric Calculations in division Chemistry Basic Concepts of Chemistry – Class 11
Answer» Correct CHOICE is (d) 0.6 The best EXPLANATION: The chemical equation of formation of magnesium oxide is 2 MG(s) + O2(g) ® 2MgO(s). The formula for calculation of mass PERCENT is (mass of solute/mass of solution) X 100. Therefore 2(24)/2(24+16) = 0.6.

Discussion

No Comment Found

Related InterviewSolutions

Which of the given reactions are counted as balanced reactions?(a) H2 + O2 → 2H2O(b) 4Al + 3O2 → 2Al2O3(c) Mg(OH)2 + 2HNO3 → 2Mg(NO3)2 + 2H2O(d) N2 + 3H2 → NH3This question was addressed to me in an online quiz.This intriguing question originated from Stoichiometry and Stoichiometric Calculations in chapter Chemistry Basic Concepts of Chemistry – Class 11
What’s the number of entities or particles together in mole concept known as?(a) Boltzmann constant(b) Avogadro’s number(c) Universal gas constant(d) Reynold’s numberI got this question in class test.I need to ask this question from Mole Concept and Molar Masses in portion Chemistry Basic Concepts of Chemistry – Class 11
Who proposed that equal volumes of all gases at the same temperature & given pressure should contain an equal number of molecules?(a) Antoine Lavoisier(b) Joseph Proust(c) Avogadro(d) Joseph LouisThis question was posed to me in an international level competition.Enquiry is from Laws of Chemical Combination in section Chemistry Basic Concepts of Chemistry – Class 11
All atoms of a given element have identical __________including identical _________(a) Properties, mass(b) Weight, volume(c) Volume, properties(d) Temperature, pressureI had been asked this question in an online interview.This intriguing question originated from Dalton’s Atomic Theory topic in division Chemistry Basic Concepts of Chemistry – Class 11
What is 1 Dalton?(a) a unified mass unit, 1.360539040(20)×10^−27kg(b) a unified mass unit, 1.640539040(20)×10^−27kg(c) a unified mass unit, 1.660539040(20)×10^−27kg(d) a unified mass unit, 1.660539040(20)×10^−27kgThe question was asked in unit test.Question is from Dalton’s Atomic Theory in portion Chemistry Basic Concepts of Chemistry – Class 11
What did Joseph Proust state regarding Law of Definite Proportions?(a) A given mixture always contains absolutely the same proportion of elements by weight(b) A given compound always contains absolutely the same proportion of moles by weight(c) A given compound always contains absolutely the same proportion of elements by volume(d) A given compound always contains absolutely the same proportion of elements by weightI got this question in examination.My enquiry is from Laws of Chemical Combination topic in chapter Chemistry Basic Concepts of Chemistry – Class 11
Which among the three states of matter has a definite shape and size?(a) Solids(b) Liquids(c) Gases(d) VaporThis question was addressed to me in final exam.The above asked question is from Nature of Matter in section Chemistry Basic Concepts of Chemistry – Class 11
What does Sushruta Samhita explain?(a) Alkanes(b) Alkynes(c) Noble gases(d) Alkalies importanceThis question was addressed to me by my college director while I was bunking the class.My doubt stems from Importance of Chemistry in section Chemistry Basic Concepts of Chemistry – Class 11
The molecular formula of a compound is C6H12O6. What’s the empirical formula for this compound?(a) C6H12O6(b) CHO(c) C2H6O2(d) CH2OThe question was asked during an interview.This interesting question is from Percentage Composition topic in chapter Chemistry Basic Concepts of Chemistry – Class 11
______ is the sum of atomic masses of the elements present in a molecule.(a) Average atomic mass(b) Atomic mass(c) Gram formula mass(d) Molecular massThis question was addressed to me during an interview.The doubt is from Atomic and Molecular Masses in portion Chemistry Basic Concepts of Chemistry – Class 11

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment