Friday
October 24, 2014

Posts by Chris


Total # Posts: 2,211

Life oriantation
Identify 5 practices in above case study that are in contravention of the basic condition of employment act
March 10, 2013

physics
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. As shown is the figure, a polar bear climbs onto a piece of ice, which has a volume of 5.75 m3, and is floating in sea water. a) What is the mass of the piece of ice? b) What is the mass of the ...
March 9, 2013

math
The cashier got 1/3 of the stamps and the secretary got 1/5 of the stamps. The secretary got 40 fewer stamps than the cashier. How many did the cashier receive?
March 8, 2013

Chemistry
Determine the boiling point of a solution contanting 36.1grams calcium chloride molar mass 112 in 200.0grams water.
March 7, 2013

Chemistry
The molal freezing point constant(Kf) for acetic acid is 3.90 C/m. When 31.5 grams of unknown solute is dissolved in 650 grams of acid the freezing point is lowered by 0.79 what is the molar mass
March 7, 2013

Chemistry
How many grams of NH4Br(Molar Mass=98g)are in 440.0 mL of 1.75Moles NH4Br
March 7, 2013

Chemistry
A Serum taken from a patient being treated with lithium for manic-depressive illness was analyzed for lithium concentration. A reading of 291 units was obtained for the intensity of the 671 nm red emission line. Then 1.00 mL of a 11.7 mM Lithium standard was added to 9.00 mL ...
March 7, 2013

science
If you are titrating 25.00 mL of a 1.00mg/ml CaCO3 solution, how many mL of 0.010M EDTA solution will be required to reach the equivalence point
March 4, 2013

Physics
A specimen has .625 the amount of carbon 14 you would find in a living specimen. How many half-lives has the specimen been through? How old is the specimen?
March 3, 2013

Physics
A specimen has .625 the amount of carbon 14 you would find in a living specimen. How many half-lives has the specimen been through? How old is the specimen?
March 3, 2013

Physics
A specimen has .625 the amount of carbon 14 you would find in a living specimen. How many half-lives has the specimen been through? How old is the specimen?
March 3, 2013

Basic Chemistry (Science)
Determining Chemical Formulas? This was on my test a few days ago for Basic Chemistry, I received 8/20 and I'd really like to see how to work these problems out. *PLEASE SHOW WORK*. Their are four parts to this, If anyone could answer all four with easy explanations and ...
March 3, 2013

chemistry
Determining Chemical Formulas? This was on my test a few days ago for Basic Chemistry, I received 8/20 and I'd really like to see how to work these problems out. *PLEASE SHOW WORK*. Their are four parts to this, If anyone could answer all four with easy explanations and ...
March 2, 2013

Honors Application
I am filling out an Honors application for English/History and one of the questions asked why do I wish to take this course.. any ideas? Thanks My ideas are: I want want to take this course because I want to take a class that is a bit more advanced than regular classes.
February 24, 2013

Biology
Answer
February 22, 2013

Biology
Please Help Quick,Write Out The Balanced Chemical Equation For Respiration In An Athlete In A Race.
February 22, 2013

Organic
Na2wo4 ---------------> H2o2 PTC khso4
February 21, 2013

Organic
Balanced reaction for cyclohexene to adipic acid. Used na2wo4 with h2o2, PTC, and khso4.
February 21, 2013

IST Subnetting
Please fill out the form below: Subnet Mask- Broadcast Address-
February 20, 2013

IST Subnetting
The question is to describe the subnetwork with the least amount of hosts to accommodate 100 computers, calculate the subnet mask and what is the broadcast address for this network.
February 20, 2013

IST Subnetting
You want to create a subnetwork of at least 100 computers. Currently your network is 172.21.0.0/16. Describe the subnetwork with the least amount of hosts that can accommodate 100 computers and calculate the subnet mask. What is the broadcast address for this network?
February 20, 2013

IST Subnetting
You have 5 subnets with approximately 300 hosts on each subnet. Within the next 6 months, the number of subnets could increase to more than 100. The number of hosts on each subnet will probably never be more than 2,000. You do not have any plans to connect to the Internet ...
February 20, 2013

Math
i just found out the answer should be that lilly has to redo her calculations because her calculations are off. core math
February 20, 2013

Math
there are no dividend or divisor. The question is exactly as written.
February 20, 2013

Math
Lily estimated a quotient of 120 and found an actual quotion of 83. What should she do next? Explain.
February 20, 2013

Earth Science
faunal successsion
February 20, 2013

7th Grade Math
5. Park Rangers wanted to estimate the total number of wild mustangs in Central Oregon. They tagged 30 wild mustangs and sent them back to the herd. They recorded the mustang population once a month for the next three months as shown below. Month 1 Month 2 Month 3 tagged ...
February 19, 2013

math
volume of water delivered using a buret has a mass of 2.67 g. What was the final volume reading on the buret if the inital volume reading was 0.10 ml? [assume the density of water is 1.00g/mL]
February 18, 2013

Trig
Three circles with radii of 4, 5, and 6 cm, respectively, are tangent to each other externally. Find the angles of the triangle whose vertexes are the centers of the circles.
February 17, 2013

Trig
The diagonals of a parallelogram intersect at a 42◦ angle and have lengths of 12 and 7 cm. Find the lengths of the sides of the parallelogram. (Hint: The diagonals bisect each other.)
February 17, 2013

math
a ribbon is 45 cm long is cut into 2 pieces one piece is 4 times longer then the other find the length in cm of both ribbons
February 11, 2013

physics
charge A has a charge of 2C, Charge B has a charge of -3C and is located 1 meter to the right of A. Charge C is located 1 meter to the right of charge B and has a charge of -1C. if a fourth charge (charge D) is placed 4 meters to the right of charge B, how much charge must it ...
February 11, 2013

A2 Chemistry
This question is about the unnecessary production of carbon dioxide Outdoor flames, such as patio heaters and the Olympic flame, contribute to global warming. This is not only due to the heat released, but also due to the carbon dioxide produced from the combustion of ...
February 11, 2013

intro to physical science
the specific heat of granite is 0.80 KJ/kg . c. I f 1.6 MJ of heat are added to a 100-kg granite statue of James Precott Joule that is originally at 18 C, what is the finale temperature of the statue
February 11, 2013

intro to physical science
what is the Celsius equival of a temperature of 160 F
February 11, 2013

chemistry
How many grams of rubidium chloride are present in 125.0 mL of a 1.75M RbCl solution?
February 7, 2013

chemistry
What is the volume in liters of a 0.760M K3PO4 solution containing 220.9g of potassium phosphate?
February 7, 2013

Physics
A person can jump a maximum horizontal distance (by using a 45 degree projectile angle) of 3 m on Earth. The acceleration of gravity is 9.8 m/s2. What would be his maximum range on the Moon, where the free-fall acceleration is g/6 ? Answer in units of m
February 7, 2013

Physics
A person can jump a maximum horizontal distance (by using a 45 percent projectile angle) of 3 m on Earth. The acceleration of gravity is 9.8 m/s2. What would be his maximum range on the Moon, where the free-fall acceleration is g/6 ? Answer in units of m
February 5, 2013

Physics
You are standing at the top of a cliff that has a stair step configuration. There is a vertical drop of 7 m at your feet, then a horizontal shelf of 8 m, then another drop of 3 m to the bottom of the canyon, which has a horizontal floor. You kick a rock, giving it an initial ...
February 5, 2013

Physics
A ball is thrown straight upward and returns to the thrower’s hand after 2 s in the air. A second ball is thrown at an angle of 38 degrees with the horizontal. At what speed must the second ball be thrown so that it reaches the same height as the one thrown ...
February 5, 2013

Physics
A boat must cross a 260-m-wide river and arrive at a point 110 upstream from where it starts. To do so, the pilot must head the boat at a 45 degree upstream angle. THe current has speed 2.3 m/s. a) What is the speed of the boat in still water? b) How much time does the journey...
February 5, 2013

Math
Thank you Ms. Sue. I put that down and it was correct.
February 4, 2013

Math
Ms. Sue could you help me with mt question I posted re interior and find exterior angle having to total 180 degrees I believe the answer would be 40 degrees
February 4, 2013

Math
Find x in triangle Exterior is 120 degrees and 20 degrees Find interior x 180 degrees total
February 4, 2013

Math
Okay , that makes sense .
January 29, 2013

Math
3/5 came from the probability of drawing White marbles. I am not sure about the (2/4)
January 29, 2013

Math
Can somebody help me solve this problem ? I am not so good with probability. - A bag contains 2 green marbles and 3 white marbles. One marble is drawn at random and not replaced. Then a second marble is drawn. What is the probability that the first marble is white and the ...
January 29, 2013

Chemistry
If 225.O grams of NO react with excess NH3,how many grams of H2O are produced
January 29, 2013

Chemistry
How many grams of N2 are produced when 15.0 moles of NH3 react with excess NO
January 29, 2013

Chemistry
how many moles of NO are needed to react with 15.0 moles of NH3
January 29, 2013

Chemistry
How many grams of HgBr2 can be produced if 10.0 grams of Hg reacts with 10 grams Br2
January 29, 2013

Chemistry
how many moles of sodium oxide are produced when 3.9 moles of of sodium combine with excess oxygen
January 29, 2013

Math - 8th Grade
I need help please. I answered (c)incorrectly. Chantal and Julia ride horses in the same race. Chantal's horse finishes in one minute and 59.53 seconds. If Julia's horse runs 2.25 percent slower than Chantal's, how long does it take Julia's horse to finish the ...
January 25, 2013

Math - 8th Grade
I need help please. I answered (c)incorrectly. Chantal and Julia ride horses in the same race. Chantal's horse finishes in one minute and 59.53 seconds. If Julia's horse runs 2.25 percent slower than Chantal's, how long does it take Julia's horse to finish the ...
January 25, 2013

Science
The intensity of an earthquake wave passing through the Earth is measured to be 1.5×10^6 J/m^2*s at a distance of 58km from the source. What was its intensity when it passed a point only 2.0 km from the source? At what rate did energy pass through an area of 3.0 m^2 at 2...
January 25, 2013

pre- algebra
i put b i got it rong and it cant be c so its either a or d i think a
January 22, 2013

pre- algebra
Write a rule for the linear function in the table. x f(x) 1 3 2 2 3 1 4 0 A. f(x) = 4x B. f(x) = x – 4 C. f(x) = x + 4 D. f(x) = 4 – x
January 22, 2013

chemistry
What would be the concentration of dinitrogen pentoxide after 6.00 X 10(2) seconds and how long would it take for the concentration of N2O2 to decrease to 10.0% of its initial value in the following equation... N2O5 to NO2 and O2 initial concentration is 1.65 X 10-2mol/L rate ...
January 21, 2013

Chemistry
This problem is 1st order for half life. How long would it take for the concentration of cyclopropane to decrease to 50% of its initial value? to 25% of its initial value? Rate constant is 9.2/s I set up like this... t1/2= 0.693/9.2/s= 0.075s at 50% I can't figure out how ...
January 21, 2013

Chemistry
So, to solve for t would I set up the problem like this... ln (0.00124/0.0165)=4.80 X 10-4 X t?
January 20, 2013

Chemistry
What would be the concentration of dinitrogen pentoxide after 6.00 X 10(2) seconds and how long would it take for the concentration of N2O2 to decrease to 10.0% of its initial value in the following equation... N2O5 to NO2 and O2 initial concentration is 1.65 X 10-2mol/L rate ...
January 20, 2013

Chm
What is the molarity of a saturated solution of potassium sulfate if the solubility is 13 g per 100 g H2O at 25°C? The density of the solution is 1.1 g/mL
January 17, 2013

world civilization
What motivated western Europeans to explore and colonize in the wider world?
January 14, 2013

assembler language
write an assembly language subordinate count according to these specs: accepts a pointer to an array or signed words in register X. Accepts a word value in register Y, which indicates the number of array elementsl Returns the number (i.e. count) of nonzero array elements in ...
January 12, 2013

Algebra 1
A bicycle store costs $2400 per month to operate. The store pays an average of $60 per bike. Then average selling price of each bicycle is $120. How many bicycles must the store sell each month to break even?
January 9, 2013

Geography
The waters surrounding Japan and the nearby ocean currents help to make Japan's climate mostly what?
January 8, 2013

HELPP math
The choices for the variance A. 231 B. 616.2 C. 685.2 D. 1,197.2 The choices for the standard deviation A.0.2 B.24.83 C.26.18 D.34.61
December 29, 2012

HELPP math
13,14,29,26,41,53,60,7,89,14 Based on the numbers above what is the variance and the standard deviation of the data set. I think 616.2 is the variance I think 24.83 is the standard deviation Am I correct????
December 29, 2012

math
i am a 3 digit number,my middle number is double the other two which are square numbers,what is the number
December 25, 2012

Math - Need help please
There are 1,800 students at a high school. Of the students who have smoked at least one cigarette in the last month, five-eighteenths are twelfth graders. Thirty-five percent of the remaining students are eleventh graders, and the rest are in the ninth and tenth grades. If ...
December 18, 2012

Math
There are 1,800 students at a high school. Of the students who have smoked at least one cigarette in the last month, five-eighteenths are twelfth graders. Thirty-five percent of the remaining students are eleventh graders, and the rest are in the ninth and tenth grades. If ...
December 18, 2012

grade 12 math
i dont understand alg 2
December 18, 2012

trigonometry
The answer for number 4 is wrong, Cotangent means adj/opp so it would be -15/8
December 13, 2012

Math - 8th grade
Express 18 million in scientific notation. I answered 1.8 x 10 to the 7th and was wrong. I don't understand why? You are supposed to move the decimal 7 places to get 18 million. What did I do wrong? Thank You.
December 12, 2012

8th Grade Math
Express 18 million in scientific notation. I answered 1.8 x 10 to the 7th and was wrong. I don't understand why? You are supposed to move the decimal 7 places to get 18 million. What did I do wrong? Thank You.
December 12, 2012

Health
Appropriate cooking methods are cost efficient because?
December 12, 2012

Math
Alyssa, Bert, and Cara are running for school president. Alyssa receives two-sevenths of the votes. Bert receives sixty-five percent of the remaining votes, and the rest of the votes go to Cara. If Cara receives 315 votes, how many votes were there in all? Please help with ...
December 11, 2012

Chemistry
Consider a 0.71 M solution of each of the following salt dissolved in distilled water. Will the solution by basic, neutral, or acidic? KI= NH4NO2= (CH3CH2)3NHNO2= (CH3CH2)2NH2ClO4=
December 11, 2012

Chemistry
a 0.451 L solution of 1.71 ascorbic acid (ka1=7.9E-5, ka2=1.6E-12) is titrated with 1.35 M NaOH. What is pH when 0.9540 L of NaOH is added?
December 11, 2012

algebra
What is the anser to 8x + 6y = 5 for x? I am not looking for the slope of a triangle, just the anser.
December 10, 2012

trig
An airplane flies with a speed of 425 mph and a heading of 63°. If the heading of the wind is 24°and the speed of the wind is 31 mph, what is the heading of the plane and the ground speed? I've done a couple questions like this but still a little fuzzy on setting ...
December 9, 2012

8th Grade Math
Never Mind. Thank You I was doing division instead of multiplying
December 7, 2012

8th Grade Math - Ms Sue
A ship leaves the East Coast for California. It is traveling at a constant speed of five knots and takes 200 days to reach California. The ship arrives in California at the exact time of day that it left the East Coast. How far did the ship travel? Please help with step by ...
December 7, 2012

8th Grade Math
A ship leaves the East Coast for California. It is traveling at a constant speed of five knots and takes 200 days to reach California. The ship arrives in California at the exact time of day that it left the East Coast. How far did the ship travel? Please help with step by step.
December 7, 2012

Chemistry
Consider a 9.5e-10 M solution of HClO4 at 283 K. What is the pH of the solution?
December 7, 2012

physics
calc the buoyant force on a 2 L helium balloon
December 6, 2012

Physics
*smaller mass move?
December 5, 2012

Physics
a 2 kg mass and a 3 kg mass are attached to a lightweight cord that passes over a frictionless pully. the hanging masses are left free to move. a. in what direction will the smaller masses move? b.what will be its acceleration
December 5, 2012

Chemistry
Diethylamine (C2H5)2NH, is a weak base that ionizes in water,a 0.600 M solution of (C2H5)2NH is 4.65% ionized at 25 degrees Celsius. -Calculate the pH of the solution. -Calculate the Kb for diethylamine.
December 5, 2012

Math - Plz help Ms.Sue
You must enter 79.7 divided by 6.89. NOT 6.89 divided by 79.97.
December 5, 2012

Math 8th Grade Please help
The radius of Earth is 6,371 kilometers. A space shuttle orbits 315 kilometers above the surface of Earth. The space shuttle completes 240° of a revolution around Earth in one hour. What is the average speed of the space shuttle? Choose the closest answer. Please help both...
December 5, 2012

psychology
what is the study called where the same people are tested repeatedly at different ages?
December 4, 2012

Statistics
I need to know how to find the probability that z0 is greater than or equal to 2.40 using my TI-83+. The answer is .008200, but I don't know how to get that using my calculator. The only reason I know the answer is because it is an example from my homework. Please help! On...
December 4, 2012

Finite Math
A student dance committee is to be formed consisting of 3 boys and 4 girls. If the membership is to be chosen from 7 boys and 6 girls, how many different committees are possible?
December 3, 2012

Algebra
The grade of a highway up a hill is 50%. How much change in horizontal distance is there if the vertical height of the hill is 175 feet?
December 3, 2012

Chemistry
how do you find the pH of a titration solution at its halfway point to the equivalence, and how would it affect solutions dealing with strong acids and strong bases, this is an example just to see it quantitatively: 100.0 mL of 0.100 M HF (Ka = 7.2 x 10-4) by 0.100 M NaOH
December 1, 2012

college physics
i figured out the first part using the fact that the crate will flip over once the CG is no longer above the crate, and drew a triangle of legs 1.44 m(distance from base of crate to CG), and 1.25m(distance from corner of crate to middle). at first i thought the answer would be...
December 1, 2012

college physics
A cubic crate of side s = 2.5m is top-heavy: its CG is 19cm above its true center. Part A How steep an incline can the crate rest on without tipping over? Part B What would your answer be if the crate were to slide at constant speed down the plane without tipping over? [Hint: ...
December 1, 2012

Physics
An object is placed 11 cm in front of a convex mirror of focal length 4 cm. Using the lens equation, find where the image will form and state whether it is a real or virtual image.
December 1, 2012

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>

Search
Members