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Jeconiah

Questions and answers by Jeconiah

Questions (98)

In a fume cupboard molten lead(ii) bromide is electrolysed using graphite electrodes. Write half-equations for the reaction at
1. 3 answers
2. 1,234 views
Calculate the mass of lithium hydroxide that must be added to 50ml of water so that it may react exactly with 5ml solution of
1. 1 answer
2. 431 views
When sulfuric acid reacts with ammonia solution an ammonium salt and water are produced. Calculate the volume of 3mol/dm3 of
1. 2 answers
2. 511 views
Calulate the volume of carbon dioxide produced when 0.5 tonnes of iron are produce.When iron oxide is heated with carbon
1. 2 answers
2. 564 views
2.8g of iron (¡¡) reacted with 100ml of 2M sulfuric acid. Which reactant is in excess? And what volume of hydrogen gas is
1. 1 answer
2. 464 views
28g
1. 1 answer
2. 373 views
2.8g of iron(¡¡) reacted with 100ml of 2M sulfuric acid. A.Which reactant is in exces? B. What volume of hydrogen gas is
1. 3 answers
2. 550 views
Calculate the mass of ammonia salt that would remain if the solution were evaporated to dryness. When sulfuric acid reacts with
1. 3 answers
2. 477 views
Calculate the mass of ammonia salt that would remain if the solution were evaporated to dryness. When sulfuric acid reacts with
1. 1 answer
2. 445 views
Calculate the mass of lithium hydroxide that must be added to 50ml of water so that it may react exactly with 5ml solution of
1. 3 answers
2. 450 views
Calculate the mass of lithium hydroxide that must be added to 50ml of water so that it may react exactly with 5ml solution of
1. 1 answer
2. 472 views
2.8g of iron(¡¡) reacted with 100ml of 2M sulfuric acid. A.Which reactant is in exces? B. What volume of hydrogen gas is
1. 3 answers
2. 990 views
Find the roots of x3-x2-10x-8=0
1. 3 answers
2. 2,398 views
Calculate the mass of ammonia salt that would remain if the solution were evaporated to dryness. When sulfuric acid reacts with
1. 1 answer
2. 475 views
Calculate the volume of carbon dioxide produced when 0.5 tonnes of iron are produced. When iron oxide is heated with carbon
1. 2 answers
2. 695 views
Calculate the volume of carbon dioxide produced when 0.5 tonnes of iron are produced. When iron oxide is heated with carbon
1. 2 answers
2. 516 views
Calculate the volume of carbon dioxide produced when 0.5 tonnes of iron are produced. When iron oxide is heated with carbon
1. 2 answers
2. 592 views
Is this formula (Fe2O3) iron oxide?
1. 1 answer
2. 434 views
Is this chemical formula (Fe2O3) iron oxide?
1. 1 answer
2. 429 views
The vertices of a triangle are (-2,3),(2,1) and (2,7). What is the area of this triangle?
1. 4 answers
2. 537 views
If cos x >0 ans sin x= -4/5, then tan x=?
1. 1 answer
2. 444 views
Solve for x: 9/28 + 3/x+2 = 3/4.
1. 1 answer
2. 382 views
The first term of the sequence is -168 and every term after the first is 8 more than term immediately proceeding it. Find the
1. 1 answer
2. 421 views
The first term of the sequence is -168 and every term after the first is 8 more than term immediately proceeding it. Find the
1. 3 answers
2. 607 views
Solve for x: 9/28 + 3/x+2 = 3/4.
1. 1 answer
2. 248 views
If cos x >0 ans sin x= -4/5, then tan x=?
1. 1 answer
2. 375 views
A piece of wire 168cm. long is to be cut into two pieces, each to be bent to make a square. The lenght of a side of one square
1. 4 answers
2. asked by Jeconiah
3. 2,325 views
When the object is placed beyond 2f, where should you put your eyes for getting the clear image of it?
1. 2 answers
2. 1,095 views
What is the chemical formula for alluminium hydroxide?
1. 1 answer
2. 384 views
What is the chemical formula for alluminium hydroxide?
1. 1 answer
2. 344 views
Solve for x: 9^x-3^x-8=0
1. 2 answers
2. 515 views
Solve for x: 9^x-3^x-8=0
1. 1 answer
2. 364 views
Formulate the acronym for "READING THROUGH PARTNERSHIP"
1. 1 answer
2. 444 views
What exactly do computer scientists do?
1. 1 answer
2. 463 views
Ethanol is produced by the action of yeast (catalyst) on sugar cane juice. (1).What is specific name of this reaction? (2.)
1. 1 answer
2. 387 views
In a fume cupboard molten lead(ii) bromide is electrolysed using graphite electrodes. Write half-equations for the reaction at
1. 2 answers
2. 542 views
Ethanol is produced by the action of yeast (catalyst) on sugar cane juice. (1).What is specific name of this reaction? (2.)
1. 1 answer
2. 453 views
What is the MAIN reason for storing sodium metal in mineral oils?
1. 1 answer
2. 394 views
An aqueus solution of sodium mitrate(NaNO3) contains 0.85 grams of sodium nitrate and its concentration is 0.1mol L^-1. What is
1. 2 answers
2. 546 views
Solve this using elimination method: 4x-3y=-4
1. 2 answers
2. 465 views
Use substitution method to solve x-2y-5=0, 3x-5y=8
1. 2 answers
2. 1,066 views
Solve this pair of equations by the graphical method: 4x+y=9 , 3y-2y=49
1. 1 answer
2. 461 views
Solve this pair of equations by the graphical method: 4x+y=9 , 3y-2y=49
1. 4 answers
2. 602 views
When 3square root of 5= square root of a, find the value of a.
1. 1 answer
2. 410 views
Find the coordinates of the vertex of the parabola:y=x^2-8x+2
1. 1 answer
2. 392 views
When 3square root of 5= square root of a, find the value of a.
1. 1 answer
2. 407 views
A cylindrical can is open at both ends. It is of height 14 cm and radius 4.2 cm. Find the external surface area of the can.
1. 1 answer
2. 420 views
Write down the period of the function y=cos x
1. 1 answer
2. 416 views
Sketch the graph of y=x^2-x and find the minimum value of y.
1. 1 answer
2. 356 views
An aeroplane needs to fly due east from city A to city B at a speed of 400km/hr. However a 50km/hr wind blows constantly from
1. 2 answers
2. 651 views
The displacement of a particle is given by: x=t^3-7/2t^2+2t-1. Find the particles initial displacement. And find when the
1. 2 answers
2. 1,084 views
Define linear momentum.
1. 1 answer
2. 378 views
A model helicopter of mass 5kg rises vertically from rest to a height of 60m with a constant acceleration in 10 seconds.
1. 4 answers
2. 1,124 views
Two forces of 4 N and 6 N act at a point along the same horizontal line. What is its resultant force?
1. 1 answer
2. 460 views
The sum of three times a first number n twice second number is 8. If the second number is subtravted from twice the first
1. 3 answers
2. 516 views
Let p(x)=x^3+4x^2+x-6. Find a polynomial g(x) can be (remainder) r, such that p(x) can be expressed in the form p(x)=(x-2)g(x)+r
1. 1 answer
2. 381 views
Find the exact value of sin 2teta=2 sin teta cos teta given that cos teta =2/3, 0<teta< pi/2
1. 1 answer
2. 428 views
Find the exact value of the product sec teta csc teta given that sin teta=3/5 and cos teta =4/5
1. 1 answer
2. 438 views
When secondary alcohol oxidized it produces alkanes. Draw the structure of 2,2 dimethyl 3-butanol + oxygen and give the names
1. 2 answers
2. 502 views
what is deepest lake in the world?
1. 2 answers
2. 899 views
solve 6x-2x^3 with first principal
1. 1 answer
2. 316 views
simlify the following to the lowest terms: (a) [x^2-y^2]/[x^2+y^2] (b) [3a^2+6ab-a-2b]/[9a^2-6a+1] (c) [x^4-y^4]/[x^3-y^3] (d)
1. 1 answer
2. 426 views
simpliy the following: (a) {[4x^2-49]/[8x^3+27]} *{ [4x^2+12x+9]/[2x^2-13x+21]} (b)
1. 3 answers
2. 542 views
simplify: {[3x^2+10x-8]/[5x-15]}/{[x^3+64]/[x^2-9]}
1. 1 answer
2. 404 views
please help me solve these question, simlify: (x^4-y^4)/(x^3-y^3)
1. 1 answer
2. 323 views
(3a^2+6ab-a-2b)/(9a^2-6a+1)
1. 3 answers
2. 435 views
simplify: [(2x^2+5x-6)/(5x^2+7x-6)]*[(20x^2-7x-3)/(6x^2-25x+4)]/[(4x^2-11x-3)/(6x^2-19x+3)]
1. 2 answers
2. 515 views
simplify: (9x^2-16/x+1)/(4x-3)
1. 1 answer
2. 304 views
simplify: (x^2-y^2)/(x^2+y^2)
1. 3 answers
2. 272 views
Find the quotients and remainder when: 4a^2 + 9b^2 + 25c^2 - 12ab + 20ac - 30bc divided by 2a - 3b + 5c
1. 3 answers
2. 580 views
solve 2x^2-5x-1 divided by x-3
1. 1 answer
2. 394 views
Find the quotient and remainder when: (x+1)+(x-1) divided by [1-(x+1)(x-1)]
1. 1 answer
2. 430 views
solve: 2x^2-3x+5 divided by 2x-1
1. 3 answers
2. 860 views
4a^2+9b^2+25c^2-12ab+20ac-30bc divided by 2a-3b+5c.
1. 1 answer
2. 393 views
if (x-7) and (x-4) are the factors of px^3 + qx^2 - 5x +84, find the values of p and q.
1. 4 answers
2. 675 views
solve (2x)/(-x^2 + 2)
1. 3 answers
2. 327 views
Please help me to write a short narrative story based on non-traditional hero.
1. 4 answers
2. 880 views
Margie is responsible for buying a week's supply of food and medication for the dogs and cats at a local shelter. The food and
1. 3 answers
2. 1,812 views
Solve for x: log5(x-2)+ log5 (x-4) = log6(x-1)
1. 3 answers
2. 702 views
Bill and Steve decide to spend the afternoon at an amusement park enjoying their favorite activities, the water slide and the
1. 5 answers
2. 4,428 views
Solve for X: log4(3x-7)^2 = 10
1. 2 answers
2. 1,256 views
Solve for x: 6log(x^2 +1) - x = 0
1. 3 answers
2. 923 views
Slove for x: ln (x^2 -6x -16) = 5
1. 1 answer
2. 453 views
log(x-2) +log8 (x-4) =log6 (x-1)
1. 3 answers
2. 510 views
Simplify the following: (54^1/4)/ (6^3/4)(12^-1/2)
1. 1 answer
2. 251 views
Find the vakue of x: (1)logx2 = 2 (2) log3x^2 = -1
1. 1 answer
2. 466 views
Show proof of deriving the Quadratic Formula from the Quadratic Equation ax^2 + bx + c = )
1. 2 answers
2. 521 views
Show proof of deriving the Quadratic Formula from the Quadratic Equation ax^2 + bx + c = O
1. 2 answers
2. 887 views
In order to earn $1,000 in interest over 2 years at an annual rate of 4%, how much principal must be put into a saving account?
1. 1 answer
2. 402 views
Over a three-year period, the total interest paid on a $4500 loan was $1620. What was the interest rate?
1. 4 answers
2. 691 views
How long will it take for a $3000 savings account to double its value at a simple interest rate of 10%?
1. 1 answer
2. 400 views
solve and graph y>2x-1
1. 1 answer
2. 323 views
How long will take for a $3000 savings account to double its value at simple interest rate of 10%?
1. 3 answers
2. 563 views
solve for the value of x: 6log (x^2+1)-x=0. please help me because I do not have any idea in this topic.
1. 2 answers
2. 526 views
Find the coordinates by solving and graphing the equation : -x^2-x+30=0
1. 3 answers
2. 400 views
Solve for the value of x: 6log(x^2+1)-x=0. I can't even solve it.
1. 1 answer
2. 449 views
Please Can someone help in proving the code about transactiopn program of images. it must have a two diffetrent form that will
1. 1 answer
2. 355 views
what is the longest river in the world?
1. 1 answer
2. 444 views

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