Tuesday
September 2, 2014

Posts by hellen


Total # Posts: 18

life orientation
identifie 5 ways in which the environment /human factor impact on the community
July 11, 2013

Chemistry
Aluminium react with oxygen to form aluminium oxide.how many grams of potassium chlorate V would be heated to produce enough oxygen to form 5.1grams of aluminium oxide
April 28, 2013

Electronics
Rseries=R1+R2 =15ohms+10ohms =25ohms
March 14, 2013

Electronics
Two resistors of 15ohms and 5ohms are connected in parallel.this parallel combination is connected in a series with a third resistor of 10ohms.the whole circuit is then connected across a 40 volts supply. 1.determine the resistance of the circuit. 2.the current drawn from the ...
March 14, 2013

Physics
a 4 kilogram ball moving at 8 meters per second to the right collides with a 1 kilogram ball at rest. After the collision, the 4 kilogram ball moves at 4.8 meters per second to the right. What is the velocity of the 1 kilogram ball?
March 27, 2012

Chemistry
The products for the following: CaCl2(aq) + K2CO3(aq) ¨ A. CaCO3(s) + 2KCl(aq) B. CaCO3(aq) + 2KCl(s) C. none of these D. no reaction
March 5, 2011

physics
An essay of how gravitational acceleration is used to benefit mankind and the environment.how can rural people also benefit from the use of gravitational acceleration?
February 14, 2011

Chemistry
why is it important for company manufacturing vinegar to regularly check the molarity of its product?
May 17, 2010

Chemistry
The transformation shown below can be accomplished in TWO reaction steps. From the following list, select the two reagents (or sets of reagents) which would most effectively bring about this conversion. Reagents: 1. Conc H2SO4/heat 2. CN- 3. KMnO4 4. (i) CH3MgI (ii) H3O+ 5. ...
May 20, 2009

chemistry
Which reagents reagents to choose? The transformation shown below can be accomplished in TWO reaction steps. From the following list, select the two reagents (or sets of reagents) which would most effectively bring about this conversion. Reagents: 1. Conc H2SO4/heat 2. CN- 3. ...
May 20, 2009

science
what does density mean in an easy way..! thank u
February 4, 2009

WG
2.which state contains the name of a country bordering united states? is it New mexico i checked again.!!!
January 22, 2009

WG
i all ready did my work and i want to see if i got them right..... 1.what does a small blackened dot usually represent? Cities or towns. 2.which state contains the name of a country bordering united states? Canada. 3.what is the name given to the half of the earth that ...
January 22, 2009

WG
i all ready did my work and i want to see if i got them right..... 1.what does a small blackened dot usually represent?
January 22, 2009

math
31m^2n/41 x 21/mn x 2n^2/3m
December 1, 2008

Social Civics
for the first its A
February 3, 2008

science
thx i got a c thats good anuff for me
January 31, 2007

ADS
hi for my english hw im suppose to find three ads for the same product one from 2006 one from 1980s-2000 and one from before the 1980s and showing how the ad has developed throughout the years, but the ad has to be provacative like the selling of a car with a girl does anyone ...
October 13, 2006

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