nurul
Most popular questions and responses by nurul
chemistry
Determine the [OH^] of a solution that is 0.145 M in CO3^2.
asked on December 21, 2016 
chemistry
Rank the following compounds in order of decreasing boiling point: sodium fluoride ( \rm NaF ), methane ( \rm CH_4 ), fluoromethane ( \rm CH_3F )
asked on August 21, 2011 
calculus
A person 150cm tall is walking away from a lamp post at the rate of 15 meter per minute. when the man is 2.5m from the lamp post, his shadow is 3m long. Find the rate at which the length of the shadow is increasing when he is 7m from the lamp post.
asked on April 18, 2014 
math, statistic
the average of the hemoglobin reading for a sample of 20 teachers was 16 gram per 100 milliliters, with a sample standard deviation of 2 grams. find the 99% confidence interval of the population mean.
asked on June 14, 2013 
math
A bank with a branch located in a commercial district of a city has developed an improved process for serving customers during the noon to 1.00 pm lunch period. The waiting time (defined as the time elapsed from when the customer enters the line until he
asked on December 8, 2011 
chemistry
What happens to the physical properties as the strength of intermolecular forces increases?
asked on August 21, 2011 
math
it is given that y is directly proportional to xn. write down the value of n when (i) y m square is the area of a square length x m . (ii) y cm cube is the volume of a cube of length x cm.
asked on March 20, 2016 
biochemistry
Calculate the pH of a solution made by adding 75.0 g of CH3COONa to 750 mL of 0.64 M CH3COOH. Ka for CH3COOH is 1.8 x 105.
asked on March 9, 2015 
biochemistry
What mass of CH3COONa must be added to 50.0 mL of 0.50 M CH3COOH to make a solution of pH 6.0 ?
asked on March 9, 2015 
math
A game is played by drawing 4 card from an ordinary deck and replacing each card after it is drawn.find the probability that at least 1 king is drawn
asked on June 14, 2013 
Financial Acc & Reporting
Archive bhd acquired a franchise on finance lease. it is required to pay 200000 per annum in advance for five years. the implicit interest rate is 10%. the franchise could be bought for 800000. the legal life is five years but can be renewed at 5000 for
asked on July 30, 2016 
Additional maths
The roots of the equation x^2+(a+3)x2b=0 are 2 and 3. Find the values of a and b.
asked on February 1, 2012 
Math
An nsided polygon has interior angles of which 4 of them are of sizes 125,220,40 and 295 degrees . The remaining interior angles are of sizes 20 degrees each. Find the value of n, My working: let the number of sides for the polygon be n and the remaining
asked on December 5, 2014 
math
if x is directy proportinal to y cube and y=2 when x= 1, (a) find an equation connecting x and y. (b) find the value of x when y = 1 (c) find the value of y when x=108.
asked on March 20, 2016 
science
A mixture of {\rm NaCl} and {\rm NaBr} has a mass of 2.10{\rm g} and is found to contain 0.71{\rm g} of {\rm Na} What is the mass of {\rm NaBr} in the mixture?
asked on July 28, 2012 
material & structure laboratory
Is the measured normal consistency lies in the range for the Portland cements?
asked on November 20, 2011

Math
It's alright. Thank you for your help.
posted on December 5, 2014 
Math
Why is the answer n=6 ?
posted on December 5, 2014 
Physics
2.5
posted on July 20, 2014 
World history
how money is printed in today world
posted on April 13, 2011