Clive
Most popular questions and responses by Clive
trigonometry
Prove : 1 + Sin2A/ Cos2A = CosA + SinA / CosA SinA
asked on May 5, 2015 
chemistry
Methane burns in air to give carbon dioxide and water. Give a chemical equation . Show(State ) how the mixtures of these gases can be separated
asked on May 5, 2015 
chemistry
In the manufacture of iron, carbon monoxide reduces iron oxide. Why isn't hydrogen used?
asked on October 8, 2015 
MATHS
Two circles of radii 5 cm and 12 cm are drawn, partly overlapping. Their centers are 13cm apart. Find the area common to the two circles.
asked on July 17, 2016 
chemistry
How can DRY calcium carbonate be prepared from sodium carbonate? Na2Co3 + CaCl2  NaCL + CaCo3. but how to get dry calcium carbonate
asked on August 17, 2015 
MATHS
While selling 15 copies, a man gains the cost price of 5 copies. Find his profit percent.?
asked on March 18, 2016 
programming ( qbasic)
Write a program in qbasic to print the user entered word in reverse order using FUNCTION...END FUNCTION
asked on June 2, 2015 
CHEMISTRY
What mass of sulphur must be burned to produce 64.0 tonnes of sulphur dioxide. . . So far, I have calculated the molecular mass of SO2( 64.1 ) . and then found out the number of moles of sulphur dioxide. ( 998.4) What to do now?
asked on July 5, 2016 
chemistry
How to distinguish between an acid and an alkali. DO not use indicators
asked on June 24, 2015 
math
A and B can do a piece of work in 12 days. They started to work together but A left after a few days. If B alone worked for 20 days, the whole work was finished in 24 days. How long would A take to complete the work??? question is really confusing :/
asked on October 21, 2015 
MATHS SIMPLE PROBLEM HELP
Given that 3rd Quartile (Q3) = 60 . The classes are : 010,1020,2030,3040,4050,5060,607... 7080,8090 Now, IN which class does Q3 lie?? 5060 or 6070?
asked on January 24, 2016 
chemistry
Copper dissolves in dilute acid ( H2so4) to form a pale blue solution Which of the following equation is correct 1) Cu + H2sO4> CuSO4 + h2 2) Cu + 2H2so4>Cuso4 + 2H20 + 2SO2
asked on May 5, 2015 
Physics
A brick has mass 10kg and dimensions (10*5*20)cm Find the maximum and minimum pressure it can exert on ground
asked on April 17, 2016 
MATH
A(2,1) , B(4,3) and C(3,5) are the vertices of a triangle ABC. If r1 represents the reflection in X axis and r2 represents the reflection in the line x=5, find the image of triangle ABC under combined transformation r2 o r1. Should we perform r2 first or
asked on January 26, 2016 
MATHS
A and B can do a piece of work in 10 days, B and C in 15 days, A and C in 12 days. A,B and C work together to finish the work. If they are paid $1500, how should the money be divided?
asked on December 31, 2015 
chemistry
What would be the pH of a solution that liberates carbon dioxide from sodium carbonate. Give chemical equation and reason
asked on July 14, 2015 
PHYSICS
a=40.0 plusminus 0.1 cm (uncertainty) b=2.5 plusminus 0.05 cm (uncertainty) Find a/b and its uncertainty Is it 16cm plusminus 1cm of uncertainty or is it 16.0cm plusminus 0.4 cm of uncertainty
asked on July 7, 2016 
physics
How can we increase the rate of change of magnetic flux? ( i want to check my answer)? Can it be : a) using a stronger magnet b) increasing the rate of movement of the conductor? are these correct?? both of them
asked on April 5, 2016 
chemistry
In the preparation of ammonia, why should the mixture of ammonium chloride and calcium hydroxide be a paste, not dry powder?
asked on November 29, 2015 
maths
Express the function f(x)= (2x + 1)^3 as a combination of functions g(x) and h(x) and define g(x) and h(x)
asked on July 27, 2016 
maths
x^2 + xy  Ky^2=0 , the angle made by the line pairs of this equation is 45 degree. I got the value of k as 0 and 2, do we need to reject k=0 and conclude our answer as k=2 ?
asked on April 7, 2016 
MATHS
A and B take 18 days to complete a work. A left the work after 10 days and B takes 12 days more to complete the work. In how many days can A complete the whole work?
asked on December 31, 2015 
CHEMISTRY URGENT HELP
carbon dioxide is moderately soluble in cold water but is completely boiled out if the water is boiled.Solubility increases rapidly with pressure. How is the above phenomenon used in the production of aerated drinks?
asked on August 20, 2015 
programming ( qbasic)
I am stuck in this question. I don't know how to proceed The question ? If A=1 , B=2 ,C=3 , D=4, E=5 ........................................... then print the sum of the user entered word .. ( if the user enters ABC, then the output must come :" 6 " ..
asked on June 22, 2015 
chemistry
Red sclae residue ( COPPER II ) partly dissolves in dilute acid to form a pale blue solution. Name the pale blue solution and give chemical equation to support your answer
asked on May 4, 2015 
math
Find the HCF and LCM of: 1 + 4x + 4x^2  16x^4.. ,1 + 2x  8x^3  16x^4.., 16x^4 + 4x^2 + 1
asked on April 30, 2015 
chemistry
Lime water can be used to detect carbon dioxide but it cannot be used to absorb carbon dioxide. Why?
asked on September 7, 2015 
chemistry
how to separate the mixtures of methane gas and carbon dioxide
asked on May 23, 2015 
trigonometry
Show that: sin^2(45 + A) + sin^2(45  A ) = 1
asked on May 4, 2015

Math 4th gr
Math 28000+2000+600+50 in standard form
posted on November 5, 2017 
CHEMISTRY
H2C2O4. x H20
posted on July 9, 2016 
physics
58
posted on May 22, 2016 
life orientation
People may get angry when they do not have they right
posted on April 28, 2016 
Physics
Thank you sir.
posted on April 17, 2016 
maths
But I did it comparing with ax^2 + 2hxy + by^2=0 and got 2
posted on April 7, 2016 
physics
so, it is wrong right? Is number b correct?
posted on April 5, 2016 
MATHS
Thanks... can you help me with this question as well? A and B take 18 days to complete a work. A left the work after 10 days and B takes 12 days more to complete the work. In how many days can A complete the whole work?
posted on December 31, 2015 
MATHS
Thank you so much. :D :D . I am very grateful towards you... :)
posted on December 31, 2015 
chemistry
in limited air, what reaction does it undergo to form carbon MONOXIDE ?
posted on August 18, 2015 
chemistry
thanks sir..
posted on July 15, 2015 
programming ( qbasic)
thank you. can u tell me how you actually found it ?
posted on June 22, 2015 
chemistry
Thak you sir for all these momentous information. Can you help me with one more question. I have posted it just now sir. I have an important exam tomorrow The question being ; Methane burns in air to give carbon dioxide and water. Give a chemical equation
posted on May 5, 2015 
chemistry
powders are carbon and cupric oxide red sclae  copper pale blue solution  CuSO4 rest do by yourself
posted on May 5, 2015 
chemistry
no 2 obviously
posted on May 5, 2015 
chemistry
Is Cu + 2H2So4 = Cuso4 + 2so2 + 2h20
posted on May 5, 2015 
chemistry
Thank you sir.. You made my day :D
posted on May 4, 2015