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Can someone explain how to do Q 14 from multiple choice, with an equation. Citric acid, the predominant acid in lemon juice, is a triprotic acid. A student titrated 25.0 mL samples of lemon juice with 0.550 mol L–1 NaOH. The mean titration volume was 29.50 mL. The molar mass of citric acid is...

Hi guys, can someone explain how to determine the answer for this Q. Which of the following aqueous solutions has a pH greater than 7? Sodium Citrate Sodium Chloride Ammonium Nitrate Ammonium Chloride The answer is Sodium Citrate, but can anyone please support it with a equation or...

Can someone please help with these Q's 1)Equal volumes of 4 different acids are titrated with 0.10 M NaOH solution @ 25 * C for complete reaction. HCN pH: 5.0 Conc L 0.17 M Ethanoic Acid pH: 3.0 Conc: 0.058 M Sulphuric acid pH: 2.0 Conc: 0.010 M Nitric acid ph: 1.0 Conc: 0.10 M...

Guys... im having trouble with one of the Q's in the do-point book. Geostationary satellites orbit with a radius of 42260km. Use this information to find the period of a satellite which orbits with a radius of 15000km.. any help is appreciated :D thanks :)

2 objects on a horizontal turn table which is spinning @ 10 rpm. The object X of mass 0.2kg is 10cm from the centre and Y is 30cm from the centre of the turntable. What is the mass of Y, if the centripetal force acting on it is 12 times greater than the centripetal force acting on X. It should...

Is the increase in atmospheric carbon dioxide has been linked to the burning of fossil fuels. The combustion of octane produces 1.554*10^7 kJ of energy per tonne off carbon dioxide produced. SNL has been proposed as a more environmentally sound source of energy. The heat of combustion of...

1) Find the area bounded by y= square root of ( 4- x^2) , the x-axis and the y-axis in the 1st Quadrant. 2) Find the area bounded by the x-axis, the curve y=x^3 and the lines x=-a and x=+a THANKS !

Solve the inequality 1 (divided by) x < 1 (divided by) (x+1) thanks :D

Can someone help with this Q Divide ( 3x^5 - 2x^3 +x -1) by (x+1) using long division Thanks :D

Hi Guys, Ive been doing some past papers... and have noticed 2 different explanations that are given... 1) an external magnetic field is applied to the conductive rotating disc. Due to the rotation, there is a change in flux and as a result of Lenz's Law, the magnetic field of the induced eddy...

Hi guys, can someone help with this Q A DC motor connected to a 12V Power supply accelerates from start up speed to its maximum speed. Which statement is correct? A) Its net energy increases during this time B)The supply voltage is decreased as it reaches maximum speed C) The sum of...

Can someone read my Creative Writing and advise where to improve? Hi Guys, I recently had a Belonging exam, i got 12/15 , 13/15 and 7/15:chainsaw: That 7/15 is for Creative Writing. I was wandering if anyone was willing to read my Creative and advise on where to improve, the idea or...

Hi Guys. Cam someone please explain why does the coil moves on the magnet (in the armature)? instead of being apart of the stator? In other words, why is the magnet (which is normally apart of the stator) apart of the rotor in Ac power generators ? thanks

Hi Guys, I was wandering whether to buy a sparknotes book for As You Like It. My Question is : Are the books exactly the same as what u get on the net, or is it more information ? Thanks :D

Q) A Curve has y double dash= 8x and the tangent at (-2,5) makes an angle of 45* with the x-axis. Find the equation of the curve ? Thanks :D

Hi guys, When a q asks u to explain/analyse how a Lewin model can be used to manage change effectively in this business , how do u approach it. Since it is explain (cause effect) or Analyse (implications) how do u do it (how can u link driving forces and resiting forces to that). And also -...

This is the conclusion of my speech Both Shakespeare's ...... and ........... therefore support the notion that belonging encourages one's self-actualisation and can enrich our identity and relationships, giving one the inner-capacity to accept and understand others does the part in bold fit...

Hi Guys, I have a creative piece due soon. The word limit on it is 800. I was wandering how many extra words would be accepted? My teacher said upto 30- but mine reaches 860

How many words would be an advisable amount to say in a 3.30min speech?

Hi guys, I was reading some information. It was taking about how the current, emf and back emf varies as the DC motor is in different stages; ie - just statred, normal operating speed, and overload. It stresses the fact that "if the motor is overloaded, it rotates too slowly. This reduces the...