Felix
Most popular questions and responses by Felix
chemistry
The reaction CHCL3(g)+CL2(g)_CCL4(g)+HCL(g) has the following rate law:Rate =k [CHCL3][CL2].If the concentration of CHCL3 is increased by a factor of five while the concentration of CL2 Is kept the same use a mathematical equation to show the factor by
asked on August 20, 2016 
Chemistry
Which contains more solute particles a 0.10 M aqueous solution of methanol (CH3OH) or a 0.10 M aqueous solution of table salt (NaCl)? Are we supposed to go M*L=moles*(6.022*10^23 solute particles)
asked on November 3, 2018 
chemistry
The equations for the heats of the formation of copper (I) oxide,Cu2O and copper(II) oxide,CuO are: 2Cu(s) +1/2 O2(g) CuO(s); ∆Hof =166.7kj/mol Cu(s) +1/2 O(g) CuO(s); ∆Hof= 155.2kj/mol The first and second ionisation energies of copper are 750 and
asked on October 4, 2015 
Geometry
The secondlargest state in the US is Texas, covering 268,580 square miles (including water). What is the approximate radius of a sphere with the same surface area as the area of Texas?
asked on October 24, 2014 
Chemistry
Calculate the molar concentration of uncomplexed Zn2+ (aq) in a solution that contains 0.22 mol of Zn(NH3)4 2+ per liter and 0.3109 M NH3 at equilibrium. Kf for Zn(NH3)4 2+ is 2.9 X 10^9 I started this way... (0.3109 + 4)2/0.22x)= 2.9 X 10^9
asked on March 18, 2013 
math
the melt in your mouth chocolate factory sells three times as many mints as it sells almond bars.it sells half as many almond bars as it sells caramels.if it sells 3,750 cases of mints each month,how many caramels does it sell in one month
asked on September 20, 2011 
Chemistry (reposting)
In which of the following solution would CaC2O4 have the highest molar solubility? Please help. A) 0.01 M NaCl B) 0.01 M H2C2O4 C) 0.01 M Na2C2O4 D) 0.01 M NaHC2O4 E) 0.01 M HCl I think it is E because it is a strong acid and will completely dissociate
asked on March 18, 2013 
chemistry
If 50.0 g of sodium bicarbonate is reacted and 11.0 g of carbon dioxide is produced, what is the percent yield of carbon dioxide? 2NaHCO3 > Na2CO3 + CO2 + H2O
asked on April 6, 2011 
algebra
Suppose that x varies directly as y ^2 and inversely as z, and x is 5 when y is 3 and z is 3. What is z when x is 10 and y is 3?
asked on April 11, 2019 
science
A solution contains 2 mEq/mL of KCL (Molecular weight 74.5). If a 20 mL ampule of this solution is diluted to 1 liter what is the percent strenght of the resulting solution?
asked on January 14, 2013 
math
the arcade has three pinball machines and five video games.If a person wants to play one pinball machine and one video game,how many different combinations of games could that person play?
asked on October 4, 2011 
algebra
The strength of a rectangular beam varies jointly as its width and the square of its depth. If the strength of a beam 10 inches wide by 20 inches deep is 3400 pounds per square inch, what is the strength of a beam 9 inches wide and 18 inches deep?
asked on April 10, 2019 
Math
Three towns A,B&C are located such that the distance between A&B is 15km and the distance between A&C is 90km, if the bearing of B from A is 075 and the bearing of C from A is 310. (a) draw the diagram (b) find the distance between B and C (c) find the
asked on June 1, 2019 
algebra
The volume V of a gas varies directly with the reciprocal of the pressure P. What happens to the volume of the gas if the pressure is tripled?
asked on April 10, 2019 
economics
A professor of economics gives multiple choice exams each semester. He curves the exams by giving the maximum possible points to the high score on the exam. For example, if a 50 question exam is worth 100 points and the top score in the class is 40, then
asked on November 24, 2009 
algebra
The frequency of oscillations of a pendulum varies inversely as the square root of the length of the pendulum. If a pendulum of length 25 feet oscillates with a frequency of 100 swings per minute, what would be the frequency of a pendulum of length 16
asked on April 11, 2019 
Chemistry
Calculate the molar concentration of uncomplexed Zn2+ (aq) in a solution that contains 0.22 mol of Zn(NH3)4 2+ per liter and 0.3109 M NH3 at equilibrium. Kf for Zn(NH3)4 2+ is 2.9 X 10^9 I started this way... (0.3109 + 4)2/0.22x)= 2.9 X 10^9 I'm lost and
asked on March 17, 2013 
algebra
The strength of a rectangular beam varies jointly as its width and the square of its depth. If the strength of a beam 4 inches wide by 12 inches deep is 1800 pounds per square inch, what is the strength of a beam 5 inches wide and 12 inches deep?
asked on April 11, 2019 
network analysis
Point A and B are 0.1m apart. A Point charge of +3.0*10^9 c is placed at A and a point charge at 1.0*10^9c B. X is the point on the straight line between A and B where the electric potential is zero. calculate the distance AX
asked on September 21, 2014 
physics
A 8.72 kg particle moves from the origin to position C , having coordinates x = 2.04 m and y = 2.04 m as shown in Figure 1. A particle moving in a horizontal plane from the origin to position C experiences a friction force with constant magnitude 2.32 N.
asked on November 19, 2018 
english
possessive pronouns of martha katz's?
asked on February 13, 2013 
Math
A boat starts out at 20km/h in direction 30 degrees. However, the boat is blown off course by a 12km/h wind blowing from 80 degrees. What direction does the boat now travel in and how far does it travel in one hour?
asked on October 1, 2016 
Maths
In how many ways can a family of seven sit round a table if the mother and father must sit together?
asked on March 22, 2019 
math
Polk Elementary School has three classes for each grade level,kindergarten through fifth grade.If there is an average of 27 students per classroom,about how many students attend Polk Elementary School?
asked on September 14, 2011 
math
on monday 86 science fiction books were sold at a book sale this is 8 more than twice the amount sold on thursday how many science fiction books were sold on thursday
asked on November 29, 2010 
business math
Shantel and Kwamie are planning to buy their first home. Although they are excited about the prospect of being homeowners, they are also a little frightened. A mortgage payment for the next 30 years sounds like a huge commitment. They visited a few new
asked on June 29, 2017 
math
write in scientific notation 35,000 and 982,000,000
asked on September 15, 2011 
computer
write a pseudocode to list any 25 integer and display both negative and positive
asked on November 1, 2016 
Chemistry
In which of the following solution would CaC2O4 have the highest molar solubility? Please help. A) 0.01 M NaCl B) 0.01 M H2C2O4 C) 0.01 M Na2C2O4 D) 0.01 M NaHC2O4 E) 0.01 M HCl I think it is E because it is a strong acid and will completely dissociate..
asked on March 17, 2013 
calculus
If g is a differentiable function such that g(x) is less than 0 for all real numbers x and if f'(x)=(x24)g(x), which of the following is true? f has a relative maximum at x=2 and a relative minimum at x=2, f has a relative minimum at x=2 and has a
asked on January 2, 2011 
Math
Eight students are running for three positions in the student council: president, vice president, and secretary. Which represents the total number of ways the three students can be selected if each student can be elected to only one position? A. 8x3 B.
asked on July 19, 2018 
Physics
how much heat is needed to vaporize a 400.0 g of liquid water at 310.0 K?
asked on September 23, 2015 
Math
Hello, I'm not sure how to do this question. Question A wheel with radius 5 cm is being pushed up a ramp at a rate of 4 cm per second. The ramp is 620 cm long, and 180 cm tall at the end. A point P is marked on the circle as shown How far does the wheel
asked on June 14, 2017 
Sociology
Is Ghana a classless society?
asked on April 3, 2017 
math
what are the three smallest 7 digit whole numbers that can be made using only the digits 4,3,0,9,2,8,and 5? Each digit must be used exactly one time in each number.
asked on August 25, 2015 
math
8(x+1/2)=2x+4
asked on January 11, 2012 
math
(from current question)14x+20y+negative17y+negative17x
asked on November 16, 2011 
math
5x+negative13x+6x+4x
asked on November 16, 2011 
science
How many years after voyage 2's launch was it before scientists could view its photographs of Uranus?
asked on October 14, 2011 
math
convert 15% into a fraction
asked on October 3, 2011 
math
the decimal for 15%
asked on October 3, 2011 
math
What the density of 16/2
asked on September 21, 2011 
math
square root of 64 and the square 64
asked on September 20, 2011 
math
what is the fraction form of 5.1
asked on September 14, 2011 
English
What has a lot of power and start with with a "s" and ends with a "l".
asked on March 2, 2011 
Math
The points P(2,2) , Q(4,4) and R(5,2) are vertices of a Triangle. The perpendicular bisector of PQ and the line through P parallel to QR intersect at S. Find the coordinates of S.
asked on September 13, 2017 
Physics
(5x^3)^2
asked on September 5, 2012 
English
(This homework question has been removed because it was copied directly from a test.)
asked on November 28, 2011 
Geometry
Explain whether the following statement is a valid definition: “A 30° angle is an acute angle.” Use the converse, biconditional, and at least one Euler diagram to support your answer.
asked on November 28, 2011 
math
a percent for 3/8
asked on October 3, 2011 
math
Mr.Garica's class is harvesting the school garden.The rectangular garden is twentyfive feet by fifteen feet.What is the area of the garden?
asked on September 26, 2011 
math
square roots to the nearest tenth of 42
asked on September 20, 2011 
math
find the prime factorization of 175
asked on September 20, 2011 
math
what is the scientfic notation of35,000and982,000,000
asked on September 15, 2011 
math
which of the following numbers are integers?8,11/2,0,1,3.1
asked on September 14, 2011 
psychology
can printing technology as a course put food on your table
asked on May 14, 2018 
psychology of Education
How do a person become back? Or what is the main element disturbed in a person for him/her to be mad? And what causes madness.
asked on July 25, 2017 
Math Trig
I can't seem to get the right answer on my assignment. I keep on getting 276.403 and seem to get it wrong. Please help. Suppose that cot(θ)=−8.91 and 0∘≤θ
asked on May 29, 2017 
Physics
A tugboat pulls a ship with a constant horizontal force of 6000N and causes the ship to move through a harbor. The water exerts a constant drag force on the ship of 500N. How much work is done on the ship if it moves a distance of 4.0 km? Force is causing
asked on December 16, 2015 
math
how many flowers can be planted in a flower bed 13 ft long at 13 inches apart?
asked on August 6, 2015 
Physics
A plane has a max speed of 200 km/h. What is the maximum speed it can travel due west if there's a northwest wind at 50 km/h?
asked on January 22, 2015 
d,m,v
whats the volume of benzene.?
asked on September 13, 2014 
Math
Suppose you are comparing two numbers that are greater than 1,000. You want to find the smaller of the numbers. How many pairs of digits might you have to compare before you have your answer? Explain.
asked on September 5, 2013 
math
30=3c+2(3c3
asked on December 13, 2011 
math
3(d+2)d=16
asked on December 13, 2011 
math
(from current question)5x+negative13x+6x+4x simplify
asked on November 16, 2011 
math
14x+20y+negative17y+negative17x
asked on November 16, 2011 
math
what is the percent of 438 to 789
asked on October 20, 2011 
math
how you figure percents like percent of438 to 789
asked on October 20, 2011 
math
fraction for15%
asked on October 3, 2011 
math
i need the fraction for3/8
asked on October 3, 2011 
math
a percent for 0.9 decimal
asked on October 3, 2011 
math
a fraction for 0.9 decimal
asked on October 3, 2011 
math
find a fraction of 20%
asked on October 3, 2011 
science
why do you think that people choose to live in places where earthquakes are common
asked on September 27, 2011 
math
how many feet are in 261.32 yards
asked on September 20, 2011 
math
what is 1/3of 98
asked on September 20, 2011 
math
the melt in your mouth chocolate factory is a rectangular building.The distence across the front of the store is 98 yards.The distance from the front to the back onethird of this distance.If the owners paint a sign all the way around the outside of the
asked on September 20, 2011 
math
find the square root to the nearest tenth of 13
asked on September 20, 2011 
math
the two square roots of 9 are 3 and what
asked on September 20, 2011 
math
i need to complete a venn diagram using the numbers 2035 please help me drawing a venn diagram.
asked on September 20, 2011 
math
what is the scientific notation for 1,890,000 and 7,426,000
asked on September 20, 2011 
math
i need to cmplete a venn digram of composite and odd using the numbers 2035.
asked on September 20, 2011 
algebra
25 divided 0.76 in long formed
asked on September 11, 2011

algebra
What is L?
posted on April 12, 2019 
algebra
wait a sec but a still don't get it.
posted on April 11, 2019 
algebra
Thank you yur soooo helpful!!!
posted on April 11, 2019 
Chemistry
What is it?
posted on October 11, 2018 
physics
487.3
posted on May 14, 2018 
physics
487.3
posted on May 14, 2018 
psychology
yes write in details
posted on May 14, 2018 
English
"My brother, sister, and I grew up in a very naturefriendly atmosphere." The comma after sister is sometimes optional, depending on who you talk to.
posted on March 15, 2018 
Social Studies
Whatever you want to get a few wrong so that they don't think you're some type of Super human
posted on February 15, 2018 
social studies plz help.
He has a good point there
posted on February 15, 2018 
science (weather & climaate
There are 20 questions on the quiz two of them are essay questions and the first question is water condenses onto the grass in the early morning when the air is clean because also one of your other people have done this before but I think she needs help
posted on February 15, 2018 
science
Can I get some help on this test
posted on February 15, 2018 
Math
Is this correct
posted on February 12, 2018 
Math
But there 8 questions you guys only put 7
posted on February 5, 2018 
English
What are the answers for introducing the big question lesson 1 language arts 6 B unit 2 Rhythm and rhyme pretest
posted on January 28, 2018 
english
steve
posted on January 11, 2018