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Sinachi

Questions (351)

Identify the adjectives and adverbsNearby Many Sensible Hurriedly Vigilant Carefully Glum Smells Upwards Knowledgeable
1. 1 answer
2. 160 views
The plural of the followingSubdivision Maid of honour Senior Advocate Grown up Fountain Pen Appendix Diagnosis Nightmare
1. 1 answer
2. 164 views
Write the plural, possessive singular and possessive plural forms of the followingSheep Water Luggage Man Lady Calf Leaf
1. 1 answer
2. 255 views
Write the plural, possessive singular and possessive plural forms of the followingSheep Water Luggage Ma Lady Calf Leaf
1. 1 answer
2. 222 views
What type of phrase do the sentences haveOn the bluff Standing in a cluster In skin Shaw's and beaded finery Like fine giraffe
1. 1 answer
2. 335 views
Identify the following phrasesOn the bluff Standing in a cluster In skin Shaw's and beaded finery Like fine giraffe markings
1. 1 answer
2. 219 views
Write out the pattern of the following sentencesThe long bridge has fallen down The problem requires a quick solution The old
1. 1 answer
2. 361 views
Rearrange linen white shines the other all
1. 1 answer
2. 139 views
Punctuate the passageI have occupied the highest position any man can desire in this country after that I said I was going to
1. 1 answer
2. 197 views
Change to reported speechThe headmaster said "children get ready to visit the zoo tomorrow" The boy said to his mother "mummy,
1. 1 answer
2. 339 views
Change the following to direct speechNgozi said she was right The teacher said that the assignment was to be submitted the next
1. 1 answer
2. 324 views
Change Ngozi said that she was right to direct speech
1. 1 answer
2. 181 views
What is an electric field
1. 1 answer
2. 159 views
What is the band theory
1. 9 answers
2. 115 views
Find the domain and range of f(x)=log(2x-1)
1. 1 answer
2. 107 views
Find the domain and range of f(x)=1/x^2
1. 1 answer
2. 74 views
Find the domain and range of f(x)=√x^2-7x+12
1. 1 answer
2. 86 views
Find the domain of f(x)=1/x^2
1. 5 answers
2. 96 views
Find the domain of f(x)=log(2x-1)
1. 1 answer
2. 85 views
Find the domain of f(x)=√x^2-7x+12
1. 1 answer
2. 96 views
Find the domain and range of f(x)=x^2/x^2-9
1. 1 answer
2. 78 views
Give a comprehensive account of the fate of all the Nigerian owned Satellites in Space.
1. 1 answer
2. 99 views
Synonyms and antonyms of these wordsAuthentic Lucky Inquisitive Hollow Rare Valuable Famous Mute Commence Disperse
1. 1 answer
2. 89 views
The ionisation constant of NH3 is k=1.8*10^-5. Calculate K for its conjugate acid NH^4
1. 1 answer
2. 170 views
A spectrum of lead shows an intense line of 283.3. Calculate the frequency
1. 1 answer
2. 171 views
What is the designation of the orbital for which n=3 l=1 and m-0
1. 1 answer
2. 104 views
2moles of NH3 are enclosed in a 20cm^3 vessel at 27 degree celsius. Calculate the pressure exerted by the gas
1. 1 answer
2. 168 views
What is a system that can transfer neither matter nor energy to its surroundings called
1. 1 answer
2. 105 views
2.54 of sodium chloride were dissolved in water and the solution made up to 100cm^3. What is the solution in moldm^-3
1. 1 answer
2. 125 views
An element Y has a half life of 14.3years. Determine the mass of Y that will be remaining of 57.2years if the original mass of Y
1. 1 answer
2. 109 views
Which of the following elements has the largest atomic radius; magnesium, chlorine, sodium, phosphorus
1. 1 answer
2. 118 views
A sample of oxygen gas at a temperature and pressure has a density of 1.3gl. What is the density of propane(C3H8) gas under the
1. 1 answer
2. 147 views
A balloon that contains 1.5l of air at 1atm is taken under water to a depth at which the pressure is 2.5atm. Calculate the new
1. 1 answer
2. 144 views
Calculate the percentage by mass of water of crystallization in MgSO4.7H2O
1. 1 answer
2. 143 views
What is the number of moles in 5.6g of fe
1. 1 answer
2. 89 views
A shampoo solution at 25 degree celsius has a hydroxide ion concentration of 1.5*10^-9. The solution is
1. 1 answer
2. 97 views
A sample of orange juice has a hydronium ion concentration of 2.9*10^-4. What is the ph
1. 1 answer
2. 111 views
Assuming the relative molecular mass of a compound with empirical formula C2H4NO is 116. What is the molecular formula
1. 1 answer
2. 149 views
What is a solution characterised by the ability to resist changes in ph when limited amount of acid or base are added to it
1. 1 answer
2. 114 views
What acts as an acid or base depending on the other reactant
1. 1 answer
2. 114 views
Who made the statement no two electrons in an atom can have the same set of four identical quantum numbers
1. 1 answer
2. 137 views
A nodal plane separates the two lobes of ap orbital. What is the likelihood of finding the electron on this plane
1. 1 answer
2. 101 views
The px py and pz degenerate orbitals as they have
1. 1 answer
2. 120 views
For a given value of principal quantum number the order of increasing energy for different subjects is
1. 1 answer
2. 93 views
An energy dropped from higher energy level to a lower energy level is called
1. 1 answer
2. 85 views
What happens when an electron drops from a higher energy level to a lower energy level
1. 1 answer
2. 128 views
A metallic conductor through which electrons enter or leave the system of two half cells is called
1. 1 answer
2. 120 views
The equilibrium for the saturated solution of BaF^2 is 1.8*10^-7. Calculate the solubility of BaF^2 in moles per litre?
1. 1 answer
2. 104 views
The equilibrium for the saturated solution of BaF^2 is 1.8*10^7. Calculate the solubility of BaF^2...
1. 1 answer
2. 113 views
Which one of these equation is balanced by chargeSn^2+=Sn^4- + 2e Sn^4+=Sn^2+ Sn^4+2e=Sn^4+
1. 2 answers
2. 89 views
The equilibrium for the saturated solution of BaF^2 is 1.8*10^7. Calculate the solubility of BaF^2 in moles per litre
1. 1 answer
2. 117 views
What does the conductance of a solution of an electrolyte do when there is rise in temperature
1. 1 answer
2. 129 views
When cadmium metal is reduced Cu^2+ in solution Cd^2+ forms in addition to copper metal. If ∆G° =143kJ, Calculate K at 25°C.
1. 1 answer
2. 139 views
When cadmium metal is reduced Cu^2+ in solution Cd^2+ forms in addition to copper metal. If ∆G° =-143kJ, Calculate K at 25°C
1. 1 answer
2. 139 views
What does the energy of an electron in bohr do as it moves away from the nucleus
1. 1 answer
2. 90 views
A current of 0.15A is passed through an aqueous solution of K2PtCl4. How long will it take to deposit 1g of Pt (M=195.1)
1. 1 answer
2. 222 views
What set of quantum numbers n, l,m,ms is invalid
1. 3 answers
2. 255 views
What set of quantum numbers n, 1,m,ms is invalid
1. 1 answer
2. 183 views
The K of Al is 2.0*10^-31 at 298k. What is ΔG at (298k) for the precipitation of according to the equation Al^3+3OH^-=Al(OH)3
1. 1 answer
2. 109 views
What are the units of k if the rate law of a reaction rate is k[x]^0[y]^0
1. 1 answer
2. 146 views
What volume of oxygen gas is produced at step when a 20g sample of HgO(M=216.6g) is strongly heated
1. 2 answers
2. 126 views
What are the values of ΔG and ΔE for a spontaneous reaction
1. 1 answer
2. 114 views
The rate constant of a first order reaction k is 1.00*10^-2/s and an initial concentration of 0.5mol/l. At what time will the
1. 1 answer
2. 179 views
The rate constant of a first order reaction k is 1.00*10^-2 and an initial concentration of 0.5mol/l. At what time will the
1. 1 answer
2. 104 views
Mathematical statement of the first law of thermodynamics
1. 1 answer
2. 122 views
How many atoms of al are present in 2.32g of al
1. 1 answer
2. 110 views
What is the oxidation number for carbon in CaC2O4
1. 1 answer
2. 174 views
What is the molarity of the salt produced in the reaction of 200ml of 0.1m Hcl with 100ml of 0.500 m koh
1. 1 answer
2. 206 views
What is the minority of the salt produced in the reaction of 200ml of 0.1m Hcl with 100ml of 0.500 m koh
1. 1 answer
2. 124 views
How many grams of Ca(OH)2 are contained in 1500ml of 0.0250m Ca(OH)2 solution
1. 1 answer
2. 164 views
What did Arrhenius define acid acid as
1. 1 answer
2. 86 views
Carbon monoxide has ten bonding electrons and four antibonding electrons. Therefore it has a bond order of
1. 1 answer
2. 113 views
What is the energy of a mole of radio wave photons with a frequency of 909kHz?
1. 1 answer
2. 134 views
What is the energy of a mole of a red light photos with a wavelength of 680nm?
1. 1 answer
2. 96 views
What is the energy of a mile of a red light photos with a wavelength of 680nm?
1. 1 answer
2. 99 views
What is the energy of a mile of radio wave photons with a frequency of 909kHz?
1. 1 answer
2. 88 views
What is the frequency of red light with a wavelength of 680nm?
1. 1 answer
2. 138 views
Radio 5 live in the UK broadcast at 909kHz. What wavelength does this correspond to
1. 1 answer
2. 103 views
2.54g of sodium chloride were dissolved in water and the solution made up to 100c^m3. What is the concentration of the solution
1. 1 answer
2. 112 views
43.7g of anhydrous CuSO4 were dissolved in water and the solution made up to 2dm^3. What is the minority of the solution
1. 1 answer
2. 97 views
The Zn electrode is chipped in a solution containing znso4 and gives off electrons it is therefore
1. 1 answer
2. 82 views
When cadmium metal reduces cu in solution CD forms in addition to copper metal. If ΔG=-143KJ calculate k at 25 degree celsius
1. 2 answers
2. 123 views
Express(1+i)^20 in the form of a+ib
1. 1 answer
2. 83 views
Y | t^240 | 2.42 35. | 2.59 30 | 2.77 25 | 2.98 20 | 3.17 15 | 3.34 10 | 3.57 Plot a graph t^2 vs y Find the slope s The
1. 1 answer
2. 102 views
If a and b are the roots of the equation x^2-px+q=0, form the equation whose roots are α/β^2 and β/α^2?
1. 1 answer
2. 90 views
A ball is dropped on the ground. The time interval is between the first and second bounce is 1.2s. The time interval between the
1. 1 answer
2. 246 views
Using geometric progression express 5.666666666 as a fraction
1. 2 answers
2. 103 views
Find the first four terms of the expansion of sqrt(1-3x). Hence evaluate √0.7 correct to 4 d.p
1. 2 answers
2. 118 views
Find the relation between p q and r if one root of the equation px^2+qx+r=0 is double of the other
1. 1 answer
2. 115 views
If α and β are the roots of the quadratic equation 3x^2-4x+7=0 find α^3+β^3
1. 1 answer
2. 104 views
If α and β are the roots of the quadratic equation 3x^2-4x+7=0 find α-β
1. 1 answer
2. 104 views
If α and β are the roots of the quadratic equation 3x^2-4x+7=0 find α/3β + β/2α
1. 1 answer
2. 92 views
If α and β are the roots of the quadratic equation 3x^2-4x+7=0 find 1/α^2 + 1/β^2
1. 1 answer
2. 95 views
Prove that (a^2+b^2)x^2 + 2(a+b)x+2 = 0 has no real roots if a is not equal to b
1. 2 answers
2. 123 views
Prove that (a^2+b^2)x^2 + 2 = 0 has no real roots if a is not equal to b
1. 1 answer
2. 106 views
If x^2+3(k+3)x-9k/2=0 has equal roots, find the possible values of k
1. 1 answer
2. 117 views
A function f, defined for all real X, has the following properties I) f(x)>0 for all X, ii)f(x+y)=f(x)f(y) for all X and y and
1. 1 answer
2. 112 views
Solve the equation 2x^2 - X - 4 + √2x^2-√x+√8=30
1. 1 answer
2. 72 views
Express (u+2)^3 + 5/u^4 in partial fractions
1. 1 answer
2. 140 views
Find the value of X where 2 + 9√x/(2√3 -√3x)=√3+2√2
1. 1 answer
2. 105 views

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