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April 26, 2015

Posts by MAry


Total # Posts: 3,396

Spanish 1
The directions on this question say, "Usando los verbos de la lista, dé el mandato formal que mejor completa cada oración." My choices to choose from are: dar estar ir ser The question is: ________muchas atenciones a los invitados. I thought it was dar...
December 8, 2011

Spanish 1
(Darme) a cuchara. I am supposed to replace Darme with the mandate form of the word. I replaced it with dénme, but that didn't work. What is the right form?
December 8, 2011

Social studi
I need verb sentence .Juno (read, reads) a letter from his grandma.
December 7, 2011

Social studi
I need the verb end each sentence.the boy ( send,sends)letter to his grandma.
December 7, 2011

Chemistry
The density of an elemental gas is 1.7824 g/L at STP. What is the molar mass of the element?
December 7, 2011

Finance
Calculate the value of N for which Value at Risk is twice as much as the DEAR.
December 6, 2011

math
Jack is twice as old as he was 5 years ago. His mother was then six times as old as he was. She is now 35 years old. how old is jack?
December 5, 2011

Chemistry
A balloon is floating around outside your window. The temperature outside is 39 degree celsius, and the air pressure is 0.800atm . Your neighbor, who released the balloon, tells you that he filled it with 3.10 moles of gas. What is the volume of gas inside this balloon?
December 4, 2011

organic chemistry
*structure of the product formed
December 2, 2011

organic chemistry
Give the product of the structure formed when 2-methyl-2-butene reacts with bromine in water
December 2, 2011

Chemistry
Kc for the reaction of hydrogen and iodine to produce hydrogen iodide, H2(g)+I2(g)f 2HI(g) is 54.3 at 430C. What will the concentrations be at equilibrium if we start with 0.240M concentrations of both H2 and I2?
November 29, 2011

geometry
in an isosceles triange with base angles at (0,0) and (7,0), how do I find the coordinates of the 3rd angle?
November 27, 2011

chemistry!!
The pH of an aqueous solution is 3.25. a. Calulate the concetration of the hydronium ions in the solution. b. Calulate the concetration of the hydroxide ions in the solution.
November 26, 2011

Help in Chemistry!!
You are given an aqueous solution of hydrofluoric acid. (Recall that hydrofluoric acid is a weak acid; When you are given an aqueous solution of a weak acid you always assume that the dissociation reaction of the acid in water has reached equilibrium) Predict whether the ...
November 26, 2011

phi 103
Logicians regard the following as the meaning of the word "argument." (Points : 1) A hostile and emotional dispute A poetic tribute to Spring A set of reasons put forth to support a claim The kind of thing one has with a spouse
November 26, 2011

physics
A still block slides over a still surface,if the mass of the pot is 2.00kg what is the force of friction opposing the motion?coefficient of kinetic friction is taken as 0.42.Gravity is 9.8
November 24, 2011

math
what is the total and annual returns on an investment of 2 years regular 3700 shares in a start up company, you sell the shares for $2300 (at a loss)
November 21, 2011

Algebra
A store mixes kentucky bluegrass wothe $12 per pound and chewing fescue for $12 per pound. Howe many of each should be used to make 456 pounds of mixture?
November 19, 2011

math--i just need help getting started--PLEASE!
Let W be the set of all continuous functions from the set of real numbers R to R. For f,g in W define f+g by (f+g)(x)=f(x)+g(x) and (f*g)(x)= f(x)g(x). Verify that W is a commutative ring. Does W have unity? Why or why not?
November 18, 2011

algerbra
5x/7
November 18, 2011

physics help
A 10 g bullet moving at 370 m/s strikes a ballistic pendulum of mass 2kg. The bullet emerges with a speed of 100 m/s. What height does the pendulum rise to? I dont want the answer, i just need hints!!! thnaks
November 18, 2011

chemistry(reacting masses)
When a 1 g sample of limestone was dissolved in dilute hydrochloric acid completely,0.38 g of carbon dioxide was generated.What was the percentage by mass of calcium carbonate in limestone?(Relative atomic masses : C=12, O=16,Ca=40.1)
November 18, 2011

chemistry
In an industrial process, the following reaction is carried out in the presence of a catalyst: C2H51 + Cl2 → C2H51Cl12 Calculate the percentage yield if 405.58 grams of C2H51 are used in the reaction and 474.91 grams of C2H51Cl12 are produced.
November 17, 2011

Math
These animals live in a big garden : 37 snails 49 worms 12 moths
November 17, 2011

chemistry
Given the following reaction: TiCl4 + O2→ TiO2 + Cl2 If 51.44 g TiCl4 react with 82.32 g O2 complete a mass balance table for this reaction.
November 17, 2011

algebra
one half the distance from boston to new york minus 25
November 16, 2011

Algera
x+20 If x is divisible by 4, 5 and 20 by adding a 20 to it will still make it divisible by 20.
November 15, 2011

algebra
add the three side and set it = to 65. Whhen you get a value for y, find out the other two sides and select the longest
November 15, 2011

math
what is the question?
November 15, 2011

math
Prove that R contains a zero divisor if and only if R' does.
November 14, 2011

chemistry
Suppose that 2.3 L of gas at 35°C and 1.0 atm is expanded to 4.5 L at 42°C. What will the final pressure of the gas be?
November 14, 2011

chemistry
A sample of gas at 80°C is cooled by 30 degrees until its final volume is 1.75 L. If the pressure remains constant, what was the initial volume of the gas.
November 14, 2011

Math
How much money should be invested at an annual interest rate of 6.2% compounded continuously, to be worth at least $58,000 after 13 years.
November 13, 2011

math
-3(x-4)<18 or 6-5x<-9
November 12, 2011

Math
-3(x-4)<18 and 6-5x<-9
November 12, 2011

psychology
. Which of the following is the MOST accurate conclusion one can draw about the mental health field?
November 12, 2011

physics
A 86 kg clock initially at rest on a horizontal floor requires a 649 N horizontal force to set it in motion. After the clock is in motion, a horizontal force of 517 N keeps it moving with a constant velocity. (a) Find μs between the clock and the floor. (b) Find μk ...
November 11, 2011

math
Let W be the set of all continuous fuctions from the set of real numbers R to R. For f, g in W define f+g by (f+g)(x)=f(x)+g(x) and (f*g)=f(x)g(x). Verify that W is a commutative ring. Does W have unity? Why or why not?
November 11, 2011

stats
This week we practice with Binomial Distribution. You can use Appendix Table E or Excel Function Binomdist. About 30% of adults in United States have college degree. (probability that person has college degree is p = 0.30). If N adults are randomly selected, find probabilities...
November 10, 2011

chemistry
What is the oxidizing agent in the following reaction? Cl2 (g) + 2Na+ (aq) + 2Br- (aq) --> 2Na+ (aq) + 2Cl- (aq) + Br2 (l)
November 8, 2011

abstract algebra
Let R be a ring. The center of R is the set C= {x exists in R| ax=xa for all a in R}. Show that C is a subring of R.
November 8, 2011

Finance
Bond value and time--Constant required returns Pecos Manufacturing has just issued a 15-year, 12% coupon interest rate, $1,000-par bond that pays interest annually. The required return is currently 14%, and the company is certain it will remain at 14% until the bond matures in...
November 7, 2011

chemistry
How many grams of NaOH (MW = 40.0) are there in 100.0 mL of a 0.275 M NaOH solution?
November 7, 2011

Math
A bakery sold twice as many cookies in March as in April.Their total sales for the two months were 564 cookies.How many cookies were sold in April? a) 376 b) 282 c) 234 d) 188
November 7, 2011

Statistics
with a mean/median/mode value of 22 and a standard deviation of 17. Based on these numbers, we can say that approximately 50 percent of SOC 390 students work more than ____ hours per week? ..I don't understand how to figure this question out?
November 7, 2011

Trigonometry
Calculate and write result in a+bi form. 5+10i/3-4i
November 6, 2011

physics emergency
m1 = 2.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 40 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.6 kg that hangs vertically. The system starts from rest with the spring unextended...
November 4, 2011

Math
the time x (in days), that it takes a planet to revolve around the sun can be approximated by the equation x=0.407√(d^3),where d is the mean distance of the planet from the sun in millions of miles. It takes Venus approximately 226 days to complete one revolution of the ...
November 3, 2011

Science
191/4.25=44.9 km/hr
November 2, 2011

Science
a bus trip covers 191 km and takes 4 hours and 15 miniutes. What is the average speed of the bus in kilometers per hour?
November 2, 2011

PHYSICS: Conservative Forces and Potential Energy
A mass m = 18 kg is pulled along a horizontal floor with NO friction for a distance d =6.6 m. Then the mass is pulled up an incline that makes an angle θ = 38° with the horizontal and has a coefficient of kinetic friction μk = 0.44. The entire time the massless ...
November 2, 2011

Science
Plural Noun That Change Spelling .Write the plural noun for each singular noun. Wolf man tooth
November 2, 2011

Computer Applications
Microsoft Word makes it easier to organize and write documents concerning the reports that law enforcement officers have to fill out every they respond to a call for help and take down the events of what actually happened. They can also edit pictures Microsoft PowerPoint and ...
November 2, 2011

Computer Applications
How is Microsoft Word, Excel, and PowerPoint used in Criminal Justice?
November 2, 2011

Opinions wanted
Hi, Allyson. It is not written in the best grammar and the sentences are chopped. Try working on it some more.
November 2, 2011

grammar
unhappy,lonely, field goal, sport, bust, exploded,
November 2, 2011

Chemistry
How many milliliters of 0.201 M Ba(OH)2 solution are needed to completely neutralize 12.8 mL of 0.369 M HNO3 solution? The reaction is Ba(OH)2(aq) + 2HNO3(aq) → Ba(NO3)2(aq) + 2H2O(l)
November 1, 2011

physics science
if you wish to warm 95 kg of water by 20.0c for your bath how much heat is required
October 30, 2011

social work
no I did not but thank you
October 28, 2011

social work
My Question is “ What is a mediation model” Locate and read an article in the University Library related to a mediation model. Write a 350-word summary of your article. Be sure to address the following your summary: • Identify the setting and populations most ...
October 28, 2011

social work
Assignment reads Locate and read an article in the University Library related to a mediation model. Write a 350-word summary of your article. Be sure to address the following your summary: • Identify the setting and populations most appropriate for the model described in...
October 28, 2011

Math
Frank has eight quarters in his pocket.how much money does he have.
October 27, 2011

Science
Salim added 1 g of salt to each of four beakers filled with water. He stirred the water at different speeds, and recorded how long it took for the salt to dissolved. Stirring Time (sec) No stirring 25 Slow stirring 18 Medium stirring 10 Fast stirring 6 Which conclusion should ...
October 25, 2011

government
given that a major crisis facing the G20 is the value of the Euro in certain Euro zone countries, what role should the u.s. play? what is U.S. business exposure if the Euro zone collapses?
October 25, 2011

Physics
a system consists of four particles how many terms appear in the expression for the total gravitational potential energy of the system
October 22, 2011

Math
CRANES Season 1: Wins 38 Season 2: Wins 42 Season 3: Wins 31 Season 4: Wins 50 Season 5: Wins 31 Season 6: Wins 48 PANTHERS Season 1: Wins 36 Season 2: Wins 42 Season 3: Wins 40 Season 4: Wins 40 Season 5: Wins 42 Season 6: Wins 40 Which team had the better record? Justify ...
October 20, 2011

Math
Can you explain to me the procedure to get 32 tiles. Thank you for your help.
October 20, 2011

chemistry
A gas cylinder of volume 5.00 L contains 1.00 g of Ar and 0.500 g of Ne. The temperature is 275 K. Find the partial pressure of Ne.
October 20, 2011

math
Write a situation that can be represented by the algebraic expression $3.50t.
October 18, 2011

Math
Yes 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90
October 18, 2011

Math
The secret number has a 7 in the ones place.The tens number is an odd number.
October 18, 2011

mary
The secret number has a 7 in the ones place.Then tens number is an odd number.
October 18, 2011

chemistry
An object with a mass of 7.8 g raises the level of water in a graduated cylinder from 25.1 mL to 31.8 mL. What is the density of the object?
October 18, 2011

Math
The secret number has a 7 in the on place. The tens number is a ann odd number.
October 18, 2011

Math
Reasonnablenes the flag that Nico waves has an odd number in the ones place and even number in the tens place.what flag does he wave? Number on racing flag red flag 25 blue flag14 yellow 32 green flag 6 orange flag 17
October 18, 2011

chemistry
Have 250 mL of a 0.80 M solution of silver nitrate AgNO3 dissolved in water. how many grams of AgNO3 does the solution contain
October 18, 2011

chemistry
If the maximum sensitivity of absorbance is at 450nm would the same value of K be obtain at 400nm or 500nm? Please explain.
October 18, 2011

MATH HELP PLEASE!
Let c be a positive integer with 1<=c<=n. Show that the set: W ={ó exists in Sn such that ó(c)=c} is a subgroup of Sn. (The set W is called the stabilizer of c, because every element in W leaves c fixed.)
October 14, 2011

Math
1/8b = 6 what is b=
October 13, 2011

Physics
A sled is being held at rest on a slope that makes an angle (theta) with the horizontal. After the sled is released, it slides a distance (d1) down the slope and then covers the distance (d2) along the horizontal terrain before stopping. Find the coefficient of kinetic ...
October 13, 2011

Algebra-Help please
Thank you very much Steve.
October 12, 2011

Algebra-Help please
Write the equation of the line parallel to the line y+2x+3 containing the point (2,6). Slope intercept form.
October 12, 2011

Spelling vowels.
I need the sinomo job , task
October 12, 2011

operating car
it is important to make sure that any person selling you a car has?
October 12, 2011

Math
25=53 25>53 53<25 53>25
October 11, 2011

Math
A blue jar has 25 marbles A red jar has 53 marbles .Which shows how to compare the number of marbles?
October 11, 2011

Math
My tens digit is double my one digit.I am less than 70 greater than 60.
October 11, 2011

Math
Journal one box hold 16 crayons another box jold 24 crayons. Write a sentence using word that compares the crayons in the the two boxes.
October 11, 2011

Algebra 2
Find an equation for the linear model of the situation below and use it to make a prediction. A train is traveling north at a constant rate. At 3:00 P.M. it is 55 miles north of a city. At 4:15 P.M. it is 80 miles north of the city. If d represents the distance in miles, and t...
October 11, 2011

Mathematics
If a brick weighs exactly as much as a 9-pound rock plus falf of another brick, what does a brick and a half weigh?
October 9, 2011

chemistry
How does Le Chatelier's principle explain the result you obtained when you added HCL to a suspension of Ca(OH)2 in water? Where the result was, precipiatate dissappeared and an increase in temperature resulted.
October 9, 2011

Chemistry
How does Le Chatelier's principle explain the result you obtained when you added HCL to a suspension of Ca(OH)2 in water?
October 9, 2011

math
Ture or false questions: Your teacher gives a true-false pop quiz with 10 questions. Show that the number of possible outcomes for the sample space of possible sequences of 10 answers is 1024. I got false and the number is 182 but dont think I have the right number. Some help me.
October 9, 2011

Physics
To create artificial gravity, the space station shown in the drawing is rotating at a rate of 0.600 rpm. The radii of the cylindrically shaped chambers have the ratio rA/rB = 3.00. Each chamber A simulates an acceleration due to gravity of 5.10 m/s2. Find values for (a) rA, (b...
October 7, 2011

Physics
The hammer throw is a track-and-field event in which a 7.30-kg ball (the hammer) is whirled around in a circle several times and released. It then moves upward on the familiar curved path of projectile motion and eventually returns to the ground some distance away. The world ...
October 7, 2011

Math
Jim uses his calculator to see if a number n having eight or fewer digits is divisble by a number d. He finds that n / d has a display of 32. Does d|n? Why? b. If n / d gives a display of 16.8, does d|n? Why?
October 6, 2011

chemistry ASAP
calculate the average atomic mass of element x in which the first isotope found in 28.5% abundance weighs 200.0 amu and the other isotope weighs 220.0 amu.
October 5, 2011

chemistry ASAP
calculate the average atomic mass of element x in which the first isotope found in 28.5% abundance weighs 200.0 amu and the other isotope weighs 220.0 amu.
October 5, 2011

Math
The smallest real number in the solution set of 2x > 6 is 4. A) True B) False - The smallest real number in the solution set of 2x > 6 is 3. C) False - The smallest real number in the solution set of 2x > 6 is a number greater than 3. For example, 3.01 is a real ...
October 4, 2011

math elementary
double the biggest number then take away one eg 4+4=8-1=7 that is the example of 4+3=7
October 4, 2011

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