iain
Newest questions and responses by iain
chemistry higher
calculate the volume of hydrogen produced when 6g of magnesium is reacted with 100cm of 1 mol l1 hydrochloric acid no of moles of Mg= mass/gfm = 6/24.3 = 0.247 moles 1/2 mole of Mg= 1/2 mole of H2 = 0.247 moles x 100 = 24.7cm3 ???
asked on April 12, 2015 
Maths
The circumference of the base of a cylindrical oil drum is 204cm. Calculate the diameter of the drum.
asked on January 1, 2013 
calculus
Derivative of: h(x) = e^3x+2/e^3x2 thanks
asked on December 15, 2011 
calculus
DERIVATIVE of: g(x) = Sq.root of x^48x^3+9 thanks
asked on December 15, 2011 
calculus
Find the DERIVATIVE: h(x)= e^3x+2/e^3x2 (quotient rule)
asked on December 15, 2011 
calculus
What is the DERIVATIVE of: ln x^2 * ln 6 (product rule)
asked on December 15, 2011 
Calculus
What are the critical numbers of the function: f(x)=2x^33x^236x+14 Thanks
asked on December 11, 2011 
chemistry
Camphor, C16H16O which has a freezing point of 174°C, has a freezing point depression constant of 40.0°C/m. Explain the usefulness and the limitation of camphor as a solvent for determination of molecular weights. For whose kind(s) of solute would
asked on March 7, 2010 
chemistry
C6H6 freezes at 5.5°C. At what temperature will a solution of 10 g of C4h10 in 200g of C6H6 freeze? The molal freezing point depression constant of C6H6 is 5.16°C/m?
asked on March 7, 2010 
chemistry
calculate the molecular weight of a substance which freezes forms a 7.00% by mass solution in water which freezes at 0.89°C.
asked on March 7, 2010

chemistry higher
Thank you that was really helpful Dr Bob
posted on April 12, 2015