Sunday
May 29, 2016

Posts by JORDAN

Total # Posts: 932

Chemistry
At 25 °C, an aqueous solution has an equilibrium concentration of 0.00147 M for a generic cation, A (aq), and 0.000735 M for a generic anion, B2–(aq). What is the equilibrium constant, Ksp, of the generic salt A2B(s)?
May 6, 2016

Chemistry
What is the equilibrium constant in the following reaction [C][O2]/[CO2] [CO2]/[C][O2] [C]^2[O2]^2/[CO2]^2 [CO2]^2/[C]^2[O2]^2
May 4, 2016

Chemistry
In an endothermic reaction at equilibrium, what is the effect of raising the temperature? The reaction makes more products the reaction makes more reactants*** the reaction is unchanged the answer cannot be determined
May 4, 2016

Chemistry
Consider the reaction N2(g)+3H2<-->2NH3(g). What is the effect of decreasing the volume on the contained gases The reaction shifts toward the product gas The system reacts by increasing the number of gas molecules*** the pressure on the gases decreases momentarily ...
May 4, 2016

Chemistry
If sulfur dioxide and oxygen can be made into sulfur troxide, what is the reverse reaction? 2SO3-->2SO2+O2*** SO3+O2-->SO5 2SO2+O2-->2SO3 SO3+2SO3-->3S+4O2
May 4, 2016

Chemistry
At equilibrium, what is the rate of production of reactants compared with the rate of the production of products? much higher higher*** the same lower
May 4, 2016

English
What makes a verb irregular? does not form it's past and present by adding -ed or -d to the past participle does not form it's past and past participle by adding -ed or -d to the present*** does not act as a verb in context functions as a verb but appears as an adjective
May 4, 2016

Chemistry
Will 1 L of 1 M NaCl contain more chloride ions than .5L of 1M MgCl2? Explain.
April 19, 2016

L.A.
The answer is 1-B 2-D 3-D
April 15, 2016

Physics
An electron traveling at 7.00 x 10^6 m/s enters and passes through a parallel plate capacitor. determine the electric field generated by the capacitor. note that the electron just clears the corner of the positive plate. The distance of the parallel plate capacitor is 2.0 cm ...
April 14, 2016

Algebra, functions
Determine the exact value of k so that the quadratic function f(x) = x2 - kx + 5 has only one zero.
March 23, 2016

Science
Which of the following can be accurately said about climax communities? A. Climax communities are always stable. (B. Restoration of the original climax community is always achieved at the same rate.) C. Climax communities are always uniform. D. Restoration of the original ...
March 23, 2016

Math
Write a real- world problem that can be solved by writing and solving the equation 3 + 10 = X +3.
March 9, 2016

Physics
A 17 g bullet strikes and becomes embedded in a 1.20 kg block of wood placed on a horizontal surface just in front of the gun. If the coefficient of kinetic friction between the block and the surface is 0.23, and the impact drives the block a distance of 8.6 m before it comes ...
February 24, 2016

Art
Seriously?!? What's the answer to all 5 art questions? Especially on this lesson.
February 16, 2016

Math
The Problem: You win the grand prize on a game show. You have the following choices: Option 1: $1-million dollars paid as a $25 000 annuity every year over 40 years. Option 2: The present value of option 1 if the current interest rate is 4%, compounded annually. You ...
February 11, 2016

sinusoidal functions
State an equation of a sinusoidal graph with the following properties. The central axis is at y = 5 Two consecutive minimums are found at (3, −1) and (13, −1 find values for a,b,c and d
February 6, 2016

grade 12 math
In 2011, the estimated population of Canada was 34 699 000. If the government wants to use an alphabetic string using letters of the alphabet for every person in Canada. How long should the string of letters (repetition allowed) be so that every person in Canada can have a ...
January 29, 2016

math
Two teams, the Exponents and the Radicals, square off in a best of 5 math hockey tournament. Once a team wins 3 games, the tournament is over. The schedule of the tournament (for home games) goes: E-R-E-R-E If the Exponents are playing at home, there is a 60% chance they'...
January 25, 2016

math
given a cylindrical waterbottle that has a volume of 1.25L, find the radius and a height that is 4-6 times the radius
January 16, 2016

Chemistry
Which of the following compounds contains both ionic and covalent bonds? SiO2 LiCN LiI PCl3
January 15, 2016

math
what is the postulate for this 2(x + 3) = 2x + 6
January 11, 2016

math
Use words to describe a reasonable domain and range for the number of people painting a house and the time required to finish the job. Explain your answer.
December 27, 2015

math
1.On the package of candy coated chocolates it states the box contains 147 grams. In reality, the mass can vary between 145 g and 150 g. You may find between 63 and 69 pieces of candy in any given box. Explain which variable represents the domain and range. State the domain ...
December 27, 2015

math
Express each radical in exponential form. Simplify using the exponent laws when possible. a) √k^2/3 b √ab^2 c 4√81x^8y^12 d 3√x √x
December 26, 2015

math
. Use words to describe a reasonable domain and range for the number of people painting a house and the time required to finish the job. Explain your answer.
December 22, 2015

math
On the package of candy coated chocolates it states the box contains 147 grams. In reality, the mass can vary between 145 g and 150 g. You may find between 63 and 69 pieces of candy in any given box. Explain which variable represents the domain and range. State the domain and ...
December 22, 2015

math
Determine the solution of the following systems of linear equations using elimination. Briefly explain your work. 3x +2y = 19 2x – 3y = -6
December 22, 2015

math
Determine the solution of the following systems of linear equations using elimination. 2x + 3y = 7 x – 2y – 4 = 0
December 20, 2015

math
. A drama club was performed in an auditorium that has a capacity of 540. Students had to pay $7 a ticket and adults were charged $10. On opening night, the auditorium was full and they brought in $4764 in ticket sales. Write a system of equations to model this situation and ...
December 20, 2015

math
that isn't correct because you cannot do 7y/7=-1/7 to get a whole number for y.
December 20, 2015

math
Determine the solution of the following systems of linear equations using elimination. 2x + 3y = 7 x – 2y – 4 = 0
December 20, 2015

math
Four years from now Emily will be as old as Cathy is now. Seven years ago, the sum of their ages was 22. Write a system of equations to model this situation and solve it using substitution to determine how old the girls are now.
December 13, 2015

math
The perimeter of a rectangular cattle enclosure is 400 feet. It is 40 feet longer than it is wide. Using a system of equations solve for the length and width of the enclosure using the substitution method.
December 13, 2015

Physics
Five moles of an ideal gas are compressed isothermally from A to B, What is the work involved if the temperature of the gas is 332 K? Be sure to include the correct algebraic sign. GRAPH: wvw.webassign.n3t/cj8/15-fc-009.gif wvw and n3t need to be retyped in their proper form ...
November 30, 2015

Music
Since using such a large scale is not practical, a logarithmic scale in decibels (dB) was introduced which is also in agreement with physiological and psychological hearing sensations. Decibels.
November 30, 2015

Physics ._.
Damon was close. m= (DAΔC)t/L = 1.24e-9*4.10e-4*1.37*3600/2.06e-2 = 1.217e-7
November 30, 2015

Social Studies
Are the two dots next to an answer simply you indicating that's what you think is correct?
November 29, 2015

Physics
Thanks for the response. I wish I had something to go off of. I'm thinking the equation dU=dQ-W has something to do with figuring this out. I'm just unsure where and when to plug things in.
November 29, 2015

Physics
Replace wvw and n3t in URL with proper letters.
November 29, 2015

Physics
The pressure and volume of an ideal monatomic gas change from A to B to C, as the drawing shows. The curved line between A and C is an isotherm. IMAGE:wvw.webassign.n3t/cj8/15-p-031.gif a)Determine the total heat for the process in joules. b)State whether the flow of heat is ...
November 29, 2015

math
on September 30th I want to go to the movies and dinner with my friends. it will cost $25 for dinner and $15 for the movies my balance is $60 willi have enough to go ou
November 27, 2015

french
Could you translate this question so I know what its asking? Tu trouves dix euros. Qu est-ce que tu as?
November 25, 2015

Math
Least to greatest and write as a decimal? 3 1/2, 3 1/4, 3 1/3, and 3 2/5
November 18, 2015

Physics
A person of mass 81.7 kg escapes from a burning building by jumping from a window situated 28.9 m above a catching net.The acceleration of gravity is 9.8 m/s^2. If air resistance exerts a force of 123.1 N on him as he falls, determine his speed just before he hits the net. ...
November 11, 2015

differential calculus
a man 6 ft tall is walking toward a building at the rate of 4 ft/sec. if there is a light on the ground 40 ft from the building, how fast is the man's shadow on the building growing shorter when he is 30 ft from the building?
October 14, 2015

Physics
A stone is thrown from ground level at 72 m/s. Its speed when it reaches its highest point is 46 m/s. Find the angle, above the horizontal, of the stone's initial velocity. Answer in units of degree
October 6, 2015

physics
In lacrosse, a ball is thrown from a net on the end of stick by rotating the stick and forearm about the elbow. If the angular velocity of the ball about the elbow joint is 30.3 rad / s and the ball is 1.35 m from the elbow joint, what is the velocity of the ball?
October 5, 2015

Science
Be nice Ms.Sue
October 2, 2015

physics
Only two forces act on an object (mass=4.41 kg), as in the drawing. Find (a) the magnitude and (b) the direction (relative to the x axis) of the acceleration of the object.
October 1, 2015

technology
d
October 1, 2015

physics
Two forces A and B are applied to an object whose mass is 12.3 kg. The larger force is A . When both forces point due east, the object's acceleration has a magnitude of 0.443 m/s2. However, when A points due east and B points due west, the acceleration is 0.280 m/s2, due ...
October 1, 2015

physics
50
September 27, 2015

math
Assume you have a basket full of socks, which have the following properties: 6 of the socks have blue stripes 8 of the socks have red polka dots 16 of the socks have blue polka dots 10 of the socks have red stripes (a). If you take one sock out of the basket, what is the ...
September 24, 2015

math
A student takes a multiple choice quiz with 12 questions and 5 alternatives per question. Unfortunately, this student has no idea what any of the answers are, so he randomly selects an alternative for each question on the exam. Using this “blind guessing” strategy, ...
September 24, 2015

Math
The radius of a sphere is 3 cm . the radius is increased by a linear scale factor of 5:2 . calculate the surface area of the new sphere
September 22, 2015

Chemistry
a 7.83g sample of hydrocyanic acid contains 0.290g and 4.06g of nitrogen. Find the mass of carbonin a sample of HCN with a mass of 3.37g.
September 13, 2015

physics
A cannon is mounted on a tower above a wide, level field. The barrel of the cannon is 20 m above the ground below. A cannonball is fired horizontally with an initial speed of 900 m/s. Assuming air resistance can be neglected, approximately how long will the cannonball be in ...
September 9, 2015

Physics
An initially motionless test car is accelerated uniformly to 135 km/h in 8.08 seconds before striking a simulated deer. The car is in contact with the faux fawn for 0.695 seconds, after which the car is measured to be traveling at 87.5 km/h. What is the magnitude of the ...
September 8, 2015

Chemistry
A 2.20 g-sample of a compound containing carbon, hydrogen, and oxygen is burned and it produces 4.61 g CO2 and 0.94 g H2O. What is the empirical formula of this compound? (i.e., C2H4O) I found the mass of Carbon (4.61/44g)*(1 mol C/1 mol CO2)=.1047 I found the mass of Hydrogen...
September 8, 2015

physics
An unsuspecting bird is coasting along in an easterly direction at 4.00 mph when a strong wind from the south imparts a constant acceleration of 0.300 m/s2. If the acceleration from the wind lasts for 2.70 s, find the magnitude, r, and direction, θ, of the bird\'s ...
September 8, 2015

physics
35 m
September 8, 2015

physics
On the Moon, the acceleration due to gravity is 1.62 m/s^2. How far would a 19 g rock fall from rest in 6.5 seconds if the only force acting on it was the gravitational force due to the Moon?
September 8, 2015

Chemistry
A 2.20 g-sample of a compound containing carbon, hydrogen, and oxygen is burned and it produces 4.61 g CO2 and 0.94 g H2O. What is the empirical formula of this compound?
September 7, 2015

physics
You throw a baseball directly upward at time t = 0 at an initial speed of 13.3 m/s. What is the maximum height the ball reaches above where it leaves your hand? At what times does the ball pass through half the maximum height? Ignore air resistance and take g = 9.80 m/s2.
September 7, 2015

physics
12.06 for speed 2.01 for time
September 7, 2015

physics
While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 7.65 m/s. The stone subsequently falls to the ground, which is 11.1 m below the point where the stone leaves your hand. At what speed does the stone impact the ground? How ...
September 7, 2015

Math
How do I solve for the limit of ((x^500)-1)/(x-1)?
September 2, 2015

Math
How do I find the vertical asymptote of f(x) ={x^4}/{x^2 + 8}?
September 2, 2015

Math
Nevermind I found the answer by graphing
August 31, 2015

Math
The definition of the derivative, applied to f(x) = 7^x, results in the formula f'(x) = k \cdot 7^x where k = lim of ((7^h-1)/(h) h approaches 0 The value of the constant k cannot be determined using the usual tricks for evaluating limits. Using your calculator, ...
August 31, 2015

Science
What elements have the highest ionization energy and why?
August 30, 2015

Chemistry
How many atoms are present in 0.3333 mol of CO2? I know I need to use the conversion factor of 6.021x10^23 but do I just multiply that times .3333? =2.007?
August 30, 2015

Chemistry
The mineral cassiterite is a compound of tin and oxygen. Chemical analysis of cassiterite shows that the mass percentages of tin, Sn, and oxygen, O, are 78.8% and 21.2%, respectively. Determine the formula of this compound. I found the molar mass and correct equation SnO4. Sn-...
August 30, 2015

Chemistry
A compound is found to contain 50.05 % sulfur and 49.95 % oxygen by mass. What is the simplest (empirical) formula for this compound? They said to assume that it is 100 grams. I found the molar mass. S- 32.06 0-16.00 But now I don't know what to do. Please help. Thank you!
August 27, 2015

Math
1:3
August 27, 2015

math
2/5-2/15+3/10
August 26, 2015

Chemistry
What is a good website to practice limiting reagent problems?
August 25, 2015

Math
what is a good website to practice limits?
August 25, 2015

Math
How do I know if a graph has removable continuity, jump, or infinite? What is the difference?
August 19, 2015

Science
The combustion of a compound which contains only C and H yields 2.58 g of CO2 and 0.53 g of H2O. What is the empirical formula of the compound? Molar mass of CO2= 44.01 Molar mass of H20= 18.01 2.58g/44.01=0.586 mol CO2 .53g/18.01=.0294 mol H2O I Don't know where I went ...
August 19, 2015

math
A room is 12 feet long and 10.5 feet wide. A scale model of the room is 3.5 feet wide. What is the area of the scale model? 10.3 square feet 14 square feet 36 square feet 122.5 square feet
July 20, 2015

Geometry
If mADC = 7x+3 and mDCB = 5x+9, then mDAB = ?
May 14, 2015

SOLVE -MATH
A physics exam consists of 9 multiple choice questions and 6 open-ended problems in which all work must be shown.If an examinee must answer 6 of the multiple- choice questions and 3 of the open-ended problems, in how many ways can the questions and problems be chosen?
April 30, 2015

Algebra 2/Statistics
From a squad of 12 cheerleaders, 10 will assemble themselves into a 4-level pyramid at the Homecoming rally. 1.) How many different combinations of cheerleaders can be used to build the pyramid? For this I got 12C10=66......Right or Wrong? 2.) The coach decides that Alexis ...
April 30, 2015

Algebra 2/statistics
On a fair 6-sided die, each number has an equal probability p of being rolled. when a fair die is rolled n times, the most likely outcome (the mean) is that each number will be rolled NP times, with a standard deviation of sqrt NP(1-P). Brandon rolls a die 200 times. He will ...
April 30, 2015

maths
One number is greater than another by 4, their sum is 32. What are the two numbers? Write a function which could solve this for any two numbers (x and y) with any difference between them.​
April 20, 2015

Science
Actually that's perfect. Haha Thank You Rykr :D
April 2, 2015

Science
What is the effect of the slope of an incline of a surface on an object’s speed?” PLEASE do not answer...I just need help understanding it. Thank You
April 2, 2015

Math
How do you find the surface area of a triangular prism?
March 24, 2015

excel
what formula would be used to calculate the calories from fat for food items which is equal to the grams of fat multiplied by 9
March 19, 2015

Math
The opposite sides of a square, a rectangle, a parallelogram, and a rhombus are what type of triangle?
March 17, 2015

biology
Hello, I am having trouble with a question on my homework. Even after reading through my notes and textbook I am still not sure what the answer is. I think the answer is the new paramecium is able to reproduce sexually and asexually.Here is the question: After sexual ...
March 15, 2015

calculus
If 3x^2 + y^2 = 7 then evaluate the second derivative of y with respect to x when x = 1 and y = 2. Round your answer to 2 decimal places.
March 10, 2015

Accounting
On December 31, 2013, Ruby Inc. issued 3,000 $1,000 par value bonds with a stated rate of 6% and a 10-year maturity. Interest is payable semiannually on June 30 and December 31.
March 8, 2015

Calculus 2
Let a thing rod of length a have a density distribution function p(x)+10e^(-.1x), where x is measured in cm and p in grams per centimeter. A) if the mass of the rod is 30 g, what is the value of a? B) For the 30g rod, will the center of mass lie at its midpoint, to the left, ...
February 23, 2015

Physics
A certain force gives mass m1 an acceleration of 13.0 m/s2 and mass m2 an acceleration of 3.6 m/s2. 1) What acceleration would the force give to an object with a mass of (m2-m1)? 2) A certain force gives mass m1 an acceleration of 13.0 m/s2 and mass m2 an acceleration of 3.6 m...
February 21, 2015

Physics
A 5.0- kg concrete block rests on a level table. A 3.7- kg mass is attached to the block by a string passing over a light, frictionless pulley. If the acceleration of the block is measured to be 1.0 m/s2, what is the coefficient of friction between the block and the table?
February 21, 2015

Physics
Two boxes, A and B, are connected to each end of a light vertical rope. A constant upward force 90.0N is applied to box A. Starting from rest, box B descends 11.0m in 3.50s . The tension in the rope connecting the two boxes is 30.0N a) What is the mass of box A? b) What is the...
February 17, 2015

AP European History
How did medieval Europe lay the groundwork for the rebirth of Europe (Renaissance)? What conditions existed that allowed Europe to evolve out of medieval conditions?
February 11, 2015

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