COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

block;width:300px;height:250px" data-ad-client="ca-pub-6421572098224086" data-ad-slot="3363741150">

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

VERIFIED NECO CHEMISTRY OBJ THEORY EXPO RUNZ ANSWER 2017

VERIFIED NECO CHEMISTRY OBJ THEORY EXPO RUNZ ANSWER 2017

Presently we bring you – NECO Chemistry obj and theory, NECO 2017 Chemistry answer, NECO Chemistry answer, verified NECO June July Chemistry answer expo answer, 2017 NECO Chemistry expo answer.
=========================

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

 

Finally NECO Chemistry obj and theory, NECO 2017 Chemistry answer, NECO Chemistry answer, verified NECO June July Chemistry answer expo answer, 2017 NECO Chemistry expo answer.

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

GOODLUCK!!!

Above all Verified NECO 2017 Chemistry (Obj & Theory) question NECO Free 2017/2018 Chemistry Theory & Obj Questions and answers have been posted FOR FREE OOOO 2017/2018 NECO Chemistry OBJ AND THEORY ANSWERS NOW AVAILABLE. ANSWERS NOW POSTED BY ADMIN. CLICK BELOW IMAGE FOR THE ANSWERS NOW.

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

NECO 2017/2018 verified Chemistry OBJ THEORY/ Questions and Answers Here (Chemistry OBJ AND THEORY), Finally NECO Chemistry expo,NECO 2017 Chemistry answers, FREE Chemistry ans for NECO, see NECO expo questions for free, correct Chemistry ans,Chemistry answers runz runs expo free real and correct NECO 2017 Chemistry free expo runz runs ans answers online for freee see free answers online.

READ  Nigerian Navy Register & Login Account | Apply @ www.joinnigerianavy:com

NECO 2017 Chemistry expo 2017/2018 NECO Free Chemistry Obj and theory Answers have been posted Chemistry 2017 NECO EXAMINATION EXPO/ANSWER RUNZ RUNS OBJECTIVES and ESSAY.

KINDLY COMMENT “ I NEED IT ” IN THE COMMENT BOX BELOW. REAL NECO Geography QUESTIONS & ANSWERS Direct To … RE: 2017/2018 NECO SSCE Chemistry (Expo) NECO 2017/2018 certified Chemistry questions and answers NECO MAY JUNE 2017 Chemistry THEORY / OBJ QUESTION AND EXPO.

Furthermore I need NECO Ssce free expo site, how can I get the answer for, Congratulation to Those who Sub For Previous Subjects and Received.

KINDLY COMMENT “ I NEED IT ” IN THE COMMENT BOX BELOW. Their Answers 6 Hours before Exam Chemistry.

READ  NECO Government OBJ Questions & Theory Answers 2017

Above all NECO Chemistry expo, 2017 NECO Chemistry, NECO Chemistry ans, answers/questions Chemistry NECO 2017 Chemistry Obj And Theory Answers – June/July Expo Chemistry

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

TODAY’S NECO CHEMISTRY EXPO ANSWERS (OBJ &THEORY) 2017 | In this page we have Neco questions and answers for this june/july 2017 chemistry exams/examinations | TODAY’S NECO CHEMISTRY EXPO ANSWERS (OBJ &THEORY) 2017. Therefore we urge you readers to keep calm and read carefully.

TODAY'S NECO CHEMISTRY EXPO ANSWERS (OBJ &THEORY) 2017
TODAY’S NECO CHEMISTRY EXPO ANSWERS Loading……

As a matter of fact here is the NECO Chemistry Questions and Answers 2017NECO Chemistry Questions and Answers 2017.

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

No doubt – The National Examinations Council is an examination body in Nigeria that conducts the Senior Secondary Certificate Examination and the General Certificate in Education in June/July and December/January respectively.

First and foremost let’s work on the Section that has more work and marks.

READ  LIVE Nigerian Police Aptitude Test Past Questions And Answers

Chemistry Theory Answer Below;

1ai)
A mixture contains two or more constituents which can easily be seperated by physical methods.
1aii)
magnesium trioxonitrate(v) = Mg(NO3)2
molar mass of Mg(NO3)2.
=(1*24) + 2 (14*1 + 16*3)
=24 + 2 (14 + 48)
=24 + 28 + 96 = 148g/mol
% of nitrogen = 2*24*100/148
=% of nitrogen = 48*100/148
% of nitrogen = 4800/148
Finally % of nitrogen = 32.43%.

READ  TODAY'S NIGERIAN NAVY QUESTIONS AND ANSWERS 2017

1aiii)
i)calcium oxide (CaO)
ii)calcium choride (CaCl2)
1bi)
CnH2n+1OH
1bii)
hydrolysation
1biii)
i)displacement reaction.
ii)double decomposition reaction
iii)decomposition reaction.
iv)catalytic reaction.
v)reversible reaction..
1biv)
i)endothermic heat change.
ii)exothermic heat changecurrentschoolnews.com
1ci)
i)methyl orange.
ii)phenolphthalein.
iii)litmus.

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

1cii)

NH4Cl+Ca(OH)2—–>CaCl2+2NH3+2H2O.
1ciii)
it is collected by upward delivery.
1civ)
mass of gas = 1.58*22.4 = 35.392
vapour density = 35.392/1
relative molecular mass= V . D * 2
=35.392*2
relative molecular mass= 70.784.
==================================
5ai)
i)carbon monoxide and hydrogen.
ii)carbon monoxide,carbon dioxide,hydrogen and nitrogen.

READ  Nigerian Navy Register & Login Account | Apply @ www.joinnigerianavy:com

5aii)
i)colloids is an intermediate between true solution and a suspension
ii)condensation is the process by which water vapour in the air is changed to liquid water.
5bi)
CaC03+2HCl—–>CaCl2+H2O+CO2.

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

5bii)
i)it is used in fire extinguishers.
ii)it is used in the manufacturing of mineral water.
iii)carbon(iv)oxide is used as a coolant in nuclear reactors.

5biii)
i)Cr2O7^-2,
=2Cr + C-2*7) = -2,
2Cr – 14 = -2,
=2Cr = -2 + 14,
2Cr/2 = 12/2,
Cr = 6.

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

ii)Cr2{SO4}3
2Cr + 3 (-2*1 + -2*4) = 0
2Cr + 3 (-2 – 8) = 0
=2Cr + 3 (-10) = 0
2Cr – 30 = 0
2Cr/2 = 30/2
Cr = 15.
5ci)
vulcanization is a chemical process of converting netural rubber or related polymers into more durable materials through the addition of sulphur or other equivalent curatives or accelerators.

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

5cii)
Time Taken(t) for 6.35g of copper(ii)tetraoxosulphate.
solution
Cu^2^+ + 2c ——->Cu
Q = 2*63.5*95600
=Q = 12255500
Q = 1t
12255500/10 = 10*t/10
t = 1225550/60 = 204258.3.

5ciii)
Latex.
==================================
4ai)
electrolytic cell is a cell that consist of a container of electrolyte with two electrodes connected to a suitable direct current supply.

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

4aii)
i)daniel cell
ii)Leclanché cell
4aiii)
i)copper
ii)tin
4aiv)
action of dilute acide on zinc.

4av)
Zn+2HCl——>ZnCl+H2
4bi)
i)dinitrogen(i)oxide(N2O).
ii)nitrogen(v)oxide(N2O5).
iii)nitrogen(iv)oxide(NO2).

4bii)
charle’s law states that the volume of a fixed mass of gas varies directly with the absolute(kelvin)temperature provided the pressure remains constant.

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

4biii)
P1 V1 = P2 V2
given that
P1 = 900mmHg
P2 = 750mmHg
V1 = 300cm^3
V2 = ?
If V2 = P1V1/P2
V2 = 900*300/750
V2 = 270000/750
Finally V2 = 360cm^3.

4biv)
% composition carbon
= 12/(12*6) + (1*6) *100%
= 12/72+6 *100
= 12/78 * 100% = 1200/78%
%composition of carbon = 15.38%
4c)
TABULATE
-THERMOPLASTS-
i)it melts when heat is applied to it
ii)highly recycled
-THERMOSETS-
i)does not melt when heat is applied
ii)cannot be recycled.
==================================

TODAY’S NECO CHEMISTRY EXPO ANSWERS (OBJ &THEORY) 2017

2ai)
ionization energy deals with electron loss while electron loss while electron afinity deals with electron gain.

READ  2017 May/June WAEC Results Checker is OUT | Check Your WAEC Result 2017 Here

2aii)
i)they are used to dry gases.
ii)they are used to recover valuable vapours from industrial effluents and refine petroleum.

2bi)
TABULATE
-RHOMBIC SULPHUR-
i)bright yellow in colour
ii)it is octohedral in shape
-MONOCLINIC SULPHUR-.

i)amber in colour.
ii)it is needle like in shape.

TODAY’S NECO CHEMISTRY EXPO ANSWERS (OBJ &THEORY) 2017

2bii)
oxygen = 60%
sodium = 40%
oxygen 60/16
3.75/1.74 = 2
sodium 40/23
1.74/1.74 = 1
the emperical formula is NaO2
2biii)
sodium(iv)oxide.

2ci)
i)x is hydrophobic region
ii)y is hydrophilic religion
2cii)
i)for laundry purpose
ii)for fuel.

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

2ciii)
i)First and foremost the distance of outermost electron from the nucleus
ii)Above all the size of the positive nuclear charge
iii)Finally the screening effect of inner electrons.

2civ)
period law states that the properties of the elements are a period function of their atomic number.

2di)
n—pentane—–>n—butane—–>2—methylbutane—2,2—dimethylpropane
2dii)
i)glucose
ii)galactose.
==================================

CHEMISTRY OBJ :
1-10 DCBBCBBEDC
11-20 CADECEBBDC
21-30 EEBABDADBE
31-40 AECCACDDDC
41-50 DABABCBBCA
51-60 CBBAABCADE.

Finally….. Finally Completed….

Finally Chemistry Questions and answers June-July 2017

A mixture contains two or more constituents which can easily be seperated by physical methods.

1aii) magnesium trioxonitrate(v) = Mg(NO3)2 molar mass of Mg(NO3)2 =(1*24) + 2 (14*1 + 16*3) =24 + 2 (14 + 48) =24 + 28 + 96 = 148g/mol % of nitrogen = 2*24*100/148 % of nitrogen = 48*100/148 % of nitrogen = 4800/148 % of nitrogen = 32.43%.

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

1aiii)

i)calcium oxide (CaO)

ii)calcium choride (CaCl2)

1bi) CnH2n+1OH 1bii) hydrolysation 1biii) i)displacement reaction ii)double decomposition reaction iii)decomposition reaction iv)catalytic reaction v)reversible reaction 1biv) i)endothermic heat change ii)exothermic heat change 1ci) i)methyl orange ii)phenolphthalein.

iii)litmus 1cii) NH4Cl+Ca(OH)2—–>CaCl2+2NH3+2H2O 1ciii) it is collected by upward delivery 1civ) mass of gas = 1.58*22.4 = 35.392 vapour density = 35.392/1 relative molecular mass= V . D * 2 =35.392*2 relative molecular mass= 70.784 ==================================.

READ  SCHOOL NEWS AND UPDATE NTI FORMS NOW ON SALE

5ai) i)carbon monoxide and hydrogen ii)carbon monoxide,carbon dioxide,hydrogen and nitrogen 5aii) i)colloids is an intermediate between true solution and a suspension ii)condensation is the process by which water vapour in the air is changed to liquid water.

5bi) CaC03+2HCl—–>CaCl2+H2O+CO2 5bii) i)it is used in fire extinguishers ii)it is used in the manufacturing of mineral water iii)carbon.

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

(iv)oxide is used as a coolant in nuclear reactors. 5biii) i)Cr2O7^-2 =2Cr + C-2*7) = -2 2Cr – 14 = -2 2Cr = -2 + 14 2Cr/2 = 12/2 Cr = 6 . ii)Cr2{SO4}3 2Cr + 3 (-2*1 + -2*4) = 0 2Cr + 3 (-2 – 8) = 0 2Cr + 3 (-10) = 0 2Cr – 30 = 0 2Cr/2 = 30/2 Cr = 15.

5ci) vulcanization is a chemical process of converting netural rubber or related polymers into more durable materials through the addition of sulphur or other equivalent curatives or accelerators.

5cii) Time Taken(t) for 6.35g of copper(ii)tetraoxosulphate solution. Cu^2^+ + 2c ——->Cu Q = 2*63.5*95600 Q = 12255500 Q = 1t 12255500/10 = 10*t/10 t = 1225550/60 = 204258.3 5ciii) Latex.

================================== 4ai) electrolytic cell is a cell that consist of a container of electrolyte with two electrodes connected to a suitable direct current supply.

READ  BASICALLY WAEC ECONOMIC OBJECTIVE ANSWERS 2018 RUNZ & EXPO 2019

4aii) i)daniel cell ii)Leclanché cell 4aiii) i)copper ii)tin.  4aiv) action of dilute acide on zinc 4av) Zn+2HCl.——>ZnCl+H2 4bi) i)dinitrogen(i)oxide(N2O) ii)nitrogen(v)oxide(N2O5).

iii)nitrogen(iv)oxide(NO2) 4bii) charle’s law states that the volume of a fixed mass of gas varies directly with the absolute(kelvin)temperature provided the pressure remains constant.

4biii) P1 V1 = P2 V2 given that P1 = 900mmHg P2 = 750mmHg V1 = 300cm^3 V2 = ? V2 = P1V1/P2 V2 = 900*300/750 V2 = 270000/750 V2 = 360cm^3 4biv) % composition carbon = 12/(12*6) + (1*6) *100% = 12/72+6 *100 = 12/78 * 100% = 1200/78% %composition of carbon = 15.38%.

COMPLETE NECO CHEMISTRY ANSWER JUNE/JULY EXPO RUNZ

4c) TABULATE -THERMOPLASTS- i)it melts when heat is applied to it ii)highly recycled -THERMOSETS- i)does not melt when heat is applied ii)cannot be recycled. ================================== 2ai) ionization energy deals with electron loss while electron loss while electron afinity deals with electron gain 2aii) i)they are used to dry gases.

ii)they are used to recover valuable vapours from industrial effluents and refine petroleum.

2bi) TABULATE -RHOMBIC SULPHUR- i)bright yellow in colour ii)it is octohedral in shape -MONOCLINIC SULPHUR- i)amber in colour ii)it is needle like in shape.

2bii) oxygen = 60% sodium = 40% oxygen 60/16 3.75/1.74 = 2 sodium 40/23 1.74/1.74 = 1 the emperical formula is NaO2 2biii) sodium(iv)oxide 2ci) i)x is hydrophobic region ii)y is hydrophilic religion.

2cii) i)for laundry purpose ii)for fuel 2ciii) i)first and foremost the distance of outermost electron from the nucleus ii)above all the size of the positive nuclear charge iii)finally the screening effect of inner electrons.

FINALLY TODAY’S NECO CHEMISTRY EXPO ANSWERS (OBJ &THEORY) 2017

2civ) period law states that the properties of the elements are a period function of their atomic number 2di) n—pentane—–>n—butane—–>2—methylbutane—2,2—dimethylpropane 2dii) i)glucose ii)galactose .

CHEMISTRY OBJ :
1-10 DCBBCBBEDC
11-20 CADECEBBDC
21-30 EEBABDADBE
31-40 AECCACDDDC
41-50 DABABCBBCA
51-60 CBBAABCADE.

================================== Completed. enjoy.

Popular Keywords on NECO Chemistry Examination

above all -gce chemistry specimen 2017
finally – neco chemistry practical question
presently -chemistry specimen for gceneco gce chemistry practical specimen
furthermore -neco specimen for Chemistry
as a matter of fact -2017/2018 neco biology specimen
finally – neco chemistry past questions download
above all = neco chemistry specimen.

You can share to your loved once. Comments can be made using the comment box below.

Please follow and like us:

Related Post

LEAKED NECO COMPUTER STUDIES EXPO ANSWERS & N... LEAKED NECO COMPUTER STUDIES EXPO ANSWERS & NECO RUNZ 2017 LEAKED NECO COMPUTER STUDIES EXPO ANSWERS & NECO RUNZ 2017 - NECO past questions, a...
CONFIRM NECO FURTHER MATHEMATICS ANSWERS (OBJ RUNZ... CONFIRM NECO FURTHER MATHEMATICS ANSWERS (OBJ RUNZ 2017) CONFIRM NECO FURTHER MATHEMATICS ANSWERS (OBJ RUNZ 2017) Neco answers on FURTHER MATH, NECO ...
Complete & Correct NECO Time Table 2017/2018 ... Complete & Correct NECO Time Table 2017/2018 Download Complete & correct NECO Time Table 2017/2018 download Get the complete Neco Time table f...
View 2017 neco basic electricity answers expo runz View 2017 neco basic electricity answers expo runz View 2017 neco basic electricity answers expo runz - complete basic electricity answers expo runz 2...
NECO GOVERNMENT COMPLETE EXAM PAPERS EXPO 2017 NECO GOVERNMENT COMPLETE EXAM PAPERS EXPO 2017 As a matter of fact, NECO GOVERNMENT COMPLETE EXAM PAPERS EXPO 2017  - Government Answer & Question...
COMPLETE NECO COMPUTER SCIENCE 2017/2018 ANSWER COMPLETE NECO COMPUTER SCIENCE 2017/2018 ANSWER | THEORY EXPO COMPLETE NECO COMPUTER SCIENCE 2017/2018 ANSWER | THEORY EXPO As a matter of fact here w...
CONFIRMED 2017 NECO PHYSICS ANSWERS | NECO EXPO RU... CONFIRMED 2017 NECO PHYSICS ANSWERS | NECO EXPO RUNZ OBJ/ESSAY CONFIRMED 2017 NECO PHYSICS ANSWERS | NECO EXPO RUNZ OBJ/ESSAY Presently CONFIRMED 201...
NECO REGISTRATION AND CLOSING DATE – NECO NI... NECO REGISTRATION AND CLOSING DATE - NECO NIGERIA NECO REGISTRATION AND CLOSING DATE - NECO NIGERIA - Here we have update on NECO REGISTRATION AND C...
COMPLETE NECO TIME TABLE NOV/DEC 2017 LOADED COMPLETE NECO TIME TABLE NOV/DEC 2017 LOADED COMPLETE NECO TIME TABLE NOV/DEC 2017 LOADED | OFFICIAL NECO TIME TABLE FOR 2017 EXAMS | neco timetable ...
NECO 2017 HUMAN AND REGIONAL GEOGRAPHY ANSWER̵... NECO 2017 HUMAN AND REGIONAL GEOGRAPHY ANSWER'S NECO 2017 HUMAN AND REGIONAL GEOGRAPHY ANSWER'S I this article we have the NECO 2017 HUMAN AND REGIONA...
AGRIC WAEC EXPO RUNZ | AGRIC PRACTICALS 2018 | QUE... AGRIC WAEC EXPO RUNZ | AGRIC PRACTICALS 2018 | QUESTIONS AND ANSWERS AGRICULTURAL SCIENCE EXAMS WAEC Agriculture Practical Questions 2018 | Check Agri...
Successfully Completed NECO Food & Nutrition ... Successfully Completed NECO Food & Nutrition obj Answers/Expo Runz Successfully Completed NECO Food & Nutrition obj Answers/Expo Runz - Comple...
VIEW NECO LITERATURE IN ENGLISH DRAMA POETRY QUEST... VIEW NECO LITERATURE IN ENGLISH DRAMA POETRY QUESTIONS AND ANSWERS EXPO RUNZ VIEW NECO LITERATURE IN ENGLISH DRAMA POETRY QUESTIONS AND ANSWERS EXPO R...
CHEMISTRY 2017 NECO ANSWERS & EXPO – NE... CHEMISTRY 2017 NECO ANSWERS & EXPO CHEMISTRY 2017 NECO ANSWERS & EXPO - Complete neco expo, neco answers, chemistry questions and answers 2017...
NECO LITERATURE IN ENGLISH PAST QUESTIONS AND ANSW... NECO LITERATURE IN ENGLISH PAST QUESTIONS AND ANSWERS NECO LITERATURE IN ENGLISH PAST QUESTIONS AND ANSWERS As a matter of fact 2017 NECO LITERATURE ...
NECO 2017/2018 Civic Education Answers, Expo &... NECO 2017/2018 Civic Education Answers, Expo & Runz Made Simple NECO 2017/2018 Civic Education Answers, Expo & Runz Made Simple - NECO Civic E...

Add a Comment

Your email address will not be published.