Tuesday
September 2, 2014

Posts by Smartypants


Total # Posts: 12

science
How to properly format a science procedure paper
September 29, 2011

math
since 8/4 is equal to 2/1 =2 since 7/4 is equal to= 1 3/4 since 5/4 is equal to = 1 1/4 Then the correct order is: 1) 8/4 2) 7/4 3) 5/4
September 28, 2011

Math
A solid rod of radius r cm and length l cm has a volume of 50pie cm cube . (i) show tha the total surface area if the rod is given by A = 2pieRsquare + 100pie / r
June 18, 2011

Math
The table below shows the number of molecules in experiment B. Time(h) : 1st , 2nd , 3rd , 4th , 5th No. of molecules : 3 , 8 , 15 , 24, 35 (i) how many molecules will there be in nth hour? (ii) from which hour onwards would the no. of molecules be in experiment B?
June 18, 2011

Math
Mr lol bought x oranges for $30 and sold them at a profit of 5cents per orange. Write down the (i)cost price of an orange. (ii)the selling price of an orange When he had sold all except 20 of the oranges, he found he had received $28. (iii) form an equation in x and show that ...
June 18, 2011

Maths
Sherpa invests $10,000 in a saving account which pays a compound interest at R% per year if the total interest earned in 2years is $400, find the value of R.
June 11, 2011

science
if one mole of the compound Al4C3 has a mass of 144g and one mole of carbon has a mass of 12g, calculate the relative atomic mass of the element aluminium. Subtract 3*12 from 144 (ie, 108) Relative atomic mass= (108/4)/12
May 18, 2007

science
the specific heat capacity of lava is 1600 j kg -1 oC -1. when all the erupted lava cools from the eruption temperture of 1050 oC to 15 oC, the heat released is 15 2x10 j. calculate a value for the total mass of lava that erupted. give your answer in scientific notation. The ...
May 16, 2007

math
please help cuz i been trying for ages and cant get the answer each telephone call made to the emergency services either is or is not legitimate. suppose that each call received has probability 0.02 that it is not legitimate. assume that the legitimacy of one call is ...
May 9, 2007

CHEMISTRY HELP!!!!!!!!
How many grams of KCl are produced by the thermal decomposition of KClO3 that produces 25mL of O2 at 25 degrees and at 1 atm? A)0.0508 B)0.0762 C)0.0835 D)0.125 what is the anwser and what equation would i use to get the anwser? Write the balanced equation for the ...
April 21, 2007

chemistry
which would be the best anwser here? my guess was D but i wanna be sure Ammonium nitrate is sometimes used as a high explosive which reason best explains this? A)extremely water soluble B)contains ammonium ions C)excellent commerical fertlizer D)contains nitrogen in both its ...
April 21, 2007

math
i would like any help or suggestions you have please as i am very stcuk on these questions thanks here is the scene: each phone call made to the emergency services has probability 0.02 that it is not legitimate. assume that the legitimacy of one call is independant of weather ...
April 20, 2007

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