Saturday
December 3, 2016

Posts by wesley

Total # Posts: 49

science
1. Liquid phosphorus trichloride, PCl3 is made by the direct combination of phosphorus and chlorine. a. What is the maximum mass of PCl3 that can be produced from 125 g of P4 and 323 g Cl2? b. What mass of P4 remains after the reaction?
August 23, 2016

sciences
1. Liquid phosphorus trichloride, PCl3 is made by the direct combination of phosphorus and chlorine a. What is the maximum mass of PCl3 that can be produced from 125 g of P4 and 323 g Cl2? b. What mass of P4 remains after the reaction?
August 23, 2016

sciences
Billions of kilograms of urea, are produced annually for use as a fertilizer. The reaction used is given below. NH3(g) + CO2(g) → CO(NH2)2(s) + H2O(l) The typical starting reaction mixture has a 3:1 mole ratio of NH3 to CO2. If 47.7 g urea forms per mole of that reacts, ...
August 23, 2016

sciences
When heated with sulfuric or phosphoric acid, cyclohexanol, C6H11OH is converted to cyclohexene, C6H10. The balanced chemical equation for the reaction is shown below. C6H11OH(l) → C6H10 (l) + H2O(l) If the percent yield is 83%, what mass of cyclohexanol must we use to ...
August 23, 2016

Economics
1. According to the data table below, what is the unemployment rate?: Total Population: 1,500 Population under 16 or institutionalised: 360 Not in the labor force: 450 Unemployed: 69 Workers with part-time work who want full-time: 30 A. 10% B. 11% C. 8.4% D. 6.9% E. 14% 2. ...
July 13, 2016

Chemistry
The combustion reaction of propane is described by the reaction. C3H8 + 5O2 → 4H2O + 3CO2. How many moles of O2 are required to generate 3 moles of CO2? 2.5 moles 3 moles 4 moles 5 moles
June 3, 2016

English
please correct this pigin-How many years i take senior you.
May 19, 2016

biology
what is the mode of nutrition,habitat, economic importance, classifications scientific name, observable features and adaptation of an earthworm.
May 18, 2016

agriculture
what is the scientific name of earthworm, classification, habitat, economic importance,observable features, adaptation.
May 18, 2016

math
X is a point 2800 m East of Y. Due North of X is another point Z whose bearing from Y is N63°E. P is due North of Y and its bearing from X is N25°W. Calculate XZ and XP (give your answers to four significant figures)?
May 8, 2016

math
Houses are arranged in a school compound. Thus, Blue house is 4 km due East of Red, Yellow is 3 km due South of Blue and Green is 4 km on a bearing of 230° from the Yellow. What is the distance and bearing of the Red house from Green house?
May 7, 2016

math
A road runs from P to Q on a bearing of 140° and continues in the same direction. The bearings of R from P are 092° and 056° respectively, PQ is 1320 m. What is the shortest distance of R from the road?
May 7, 2016

Physics
A 175-N box is placed on an inclined plane that makes a 20.0° angle with the horizontal. Find the component of the weight force parallel to the plane's surface.
November 12, 2015

grammar
He and his wife
August 14, 2015

physics
What is the pressure exerted on the ground by a cube which has a weight of 600N and a side of 1m2
September 25, 2014

Maths
Your change from R50,if you spend y rand
August 18, 2014

Chemistry
calculate the amount of heat required to decompose 8 mol of NaHCO3(s) 2NaHCO3(s) + 94000 J = Na2CO3(s)+ H2O(g) + CO2(g)
June 5, 2014

math
12
January 22, 2014

chemistry
In my organic lab, we synthesized synthetic banana oil. I'm asked what gas escaped during the sodium bicarbonate washing and to write two reactions that took place during that operation. I know carbon dioxide escaped but I don't know how to write out the formulas.
October 10, 2013

life orientation
5 ways in whuch environmental or human factors affect the environment
April 29, 2013

math
On an air track, a 403.0 glider moving to the right at 1.70 collides elastically with a 500.5 glider moving in the opposite direction at 3.00 . 1. Find the velocity of first glider after the collision. 2. Find the velocity of second glider after the collision.
April 14, 2013

Physics
On an air track, a 403.0 glider moving to the right at 1.70 collides elastically with a 500.5 glider moving in the opposite direction at 3.00 . 1. Find the velocity of first glider after the collision. 2. Find the velocity of second glider after the collision.
April 14, 2013

math
The temperature was 30 colder at midnight than it was at noon. If it was 15 C at midnight, what was the temperature at noon?
March 6, 2013

Consumer math
And I have no idea what it is
December 11, 2012

Economics
Here goes... 1. Consider a model in which an individual lives two periods: this period (time one) and next period (time two). This period his budget constraint requires that his consumption, c1; plus his saving, s; equals his income, y1: c1 + s = y1: Next period his budget ...
September 30, 2012

math
Pre Algebra Questions Sketch a model and obtain the sum. 3 + (-7)
July 1, 2012

Calculus
These are the two problems from my homework I don't get.. can you help me? A: y=2x-x^3 [0,1] use the limit process to find the area of the region between the graph of the function and the x-axis over the given interval. Sketch the region B: f(x)=4-(12/(x^2))Calculate the ...
December 5, 2011

physics 12
a 1kg satellite has an orbital period of 4 hours. what's the altitude?
October 5, 2011

physics 12
A satellite has an orbital period of 4 hours. what is the altitude? thanks.
October 5, 2011

Science
How to create an organism, using CYCLO, Ocular and PLAST
October 1, 2011

Math
During a 220 meter relay race, Jack begins at the starting line and runs for 4 minutes and then passes the baton to Jill. She runs for 3 minutes and finishes the race. If Jack can run 20 meters per minute faster than Jill, then what is Jack's rate of speed?
September 9, 2011

Grammar
My aunt works at Woods Hole as a scientist. What are the nouns in the sentence? Is is aunt, Woods hole and scientist?
March 9, 2011

grammar
What is simple predicate? Its legs make it one of the world's fastest insects. Would it be make?
March 8, 2011

grammar
Simple predicate? The history of these pests may surprise you. Would it be may?
March 8, 2011

Grammar
What is simple predicate? These insects are strange and amazing creatures. Would it be are?
March 8, 2011

grammar
What would be the simple predicate? The insects' bodies can turn wood into food. I think it would be turn.
March 8, 2011

Physical Science-Sould you please check my explana
Scientists have tried to define precisely the _____ since the metric system was introduced
February 23, 2011

physics
A ball is thrown vertically upward with a speed of 27.6 m/s. How high does it rise? Answer in units of m.
November 13, 2010

8th grade
2/5 divided by 5/6
September 7, 2010

chemistry
Rolaids consumes 47 times its weight in excess stomach acid. Can this be tested using quantitative measurements?
July 6, 2010

ap chemistry
A star is estimated to have a mass of 2 X 10^36 kg. Assuming it to be a sphere of average radius 7.o X 10^5 km. Calculate the average density of the star in units of grams per cubic centimeter
July 5, 2010

Algebra
Mack is 3 times as old as Justin. In 3 years, Mack's age will be 5 more years more than 2 times as old as Justin. How old are Mack and Justin? What is the system of equation for this? I got 3x=7 and x=5+2y. But it's wrong because, I ended up with negatives. Help! Thx.
April 7, 2010

Com 220
Hi, I am writing a sentence outline on the subject of World War II; more precisely, the events that led to the war. I am somewhat confused on how to do this on the parts that I need to state and support the argument as well as prepare against any rebuttals or objections. I ...
March 17, 2010

biology
can you explain the differences and similarities between the energy cycles of human cells, plant cells, and yeast cells?
October 14, 2009

physical fitness
the ability of muscles to work over time is called what? the comparison of the weight of your fat to the weight of your muscles, bones, and joints is called?
August 20, 2009

algebra
without graphing classify each system as independent, dependent, or inconsistent. -2x-y=9 3x-4y=-8
January 7, 2009

math
how to add and subtract fractions
September 8, 2008

analogies
consternation;fear
February 20, 2008

analogies
skill is to prowess consternation;fear orbit;planet fire;smoke journey;destination
February 20, 2008

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