Questions Asked on
December 1, 2012

Calculus
integral[7 sqrt 2/2,0]sqrt(49+x^2) dx
asked by Anonymous 
Chemistry
You are given 2.677 g of a mixture of KClO3 and KCl. When heated, the KClO3 decomposes to KCl and O2, 2 KClO3 (s) → 2 KCl (s) + 3 O2 (g), and 605 mL of O2 is collected over water at 28 °C. The total pressure of the gases in the collection flask is 763
asked by Sam 
CHEMISTRY
A concentration cell is constructed of two hydrogen electrodes. The pressure of H2 is 1.00 atm in each hydrogen electrode. One of the electrodes is immersed in a solution with [H+] = 1.0 M and the other in a solution with 0.62 M NH3. What will be the value
asked by sabrina:help please 
physics
a 4.0kg cart rolling east on a level, frictionless track at 14 m/s collides with a stationary 3.0kg cart. After the collision, the 4.0kg cart is still rolling east, now at a speed of 2.0 m/s. Was this collision elastic or inelastic?
asked by anonymous 
CHEMISTRY
Suppose that a fully charged lead¨Cacid battery contains 1.16 L of 5.00 M H2SO4. What will be the concentration of HSO4 in the battery after 2.83 A of current is drawn from the battery for 6.3 h? Pb(s) + PbO2(s) + 2H+(aq) + 2HSO4−(aq) ¡ú 2PbSO4(s) +
asked by sabrina:help please 
chemistry
how many moles of NaCl are in a box of salt containing 425g NaCl
asked by Lisa m 
Math 8th Grade (Ms. Sue) ?
An artist makes a painting that is 12 feet by 9 feet. He paints a frame around the painting. The frame is 3 inches wide. What is the area of the frame? Please provide formula for figuring out. Answers (a)10.75ftsq(b)10.5ftsq (c)12.96ftsq(d)5.3125ftsq
asked by Chris 
chemistry
how many moles of sugar are contained in a 10lb bag of sugar if sugar has formula C12H22O11? first convert the pounds into grams, then grams into moles.
asked by Deidra 
math urgent urgent urgent
x+2y=12 find intercept a circle equation x^2+y^2+4x4y1=0 and graph 2)find domain and range f(x)=x^24x5 find vertex of f(x) =x^2+4x21
asked by zach w 
Math 8th Grade  Ms. Sue please
After receiving a grant for music education, a school decides to build a new band room for its expanded music program. Quadrilateral ABCD represents the floor plan of the new band room. What is the area of the room? AE = 32 ft. BE = 12 ft. CE = 26 ft. DE =
asked by Chris 
independent practice
It has 5 hundreds . The tens digit is 1 lees than the hundreds digit.the ones digit is 2 more than the hundreds digit
asked by Brianna 
College Algebra
Write the expression as a single logarithm whose coeffecient is 1. Log x + 12 log y
asked by Billie 
Chemistry
Dimethylamine burns in oxygen according to the following equation: 4 C2H7N + 15 O2 → 8 CO2 + 14 H2O + 2 N2 (a) How many liters of O2 at 35 °C and 0.840 atm will be needed to burn 7.70 L of C2H7N at 35 °C and 0.840 atm? (b) How many liters of CO2 at 35
asked by Joe 
Chemistry
What is the molar mass of a compound if a gaseous sample has a density of 2.807 g/L at 18 °C and 728 torr?
asked by Joe 
physics
A 4.55 kg object is released from rest while fully submerged in a liquid. The liquid displaced by the submerged object has a mass of 3.20 kg. How far and in what direction does the object move in 0.200 s, assuming that it moves freely and that the drag
asked by kev 
ACCOUNTING
Mills Company uses standard costing for direct materials and direct labor. Management would like to use standard costing for variable and fixed overhead. The following monthly cost functions were developed for manufacturing overhead items: Overhead Item
asked by DAVID 
math
about 7x10 to the power of 3 babies are born each day in the city. about how many babies are born each day in the city?.give the abswer un standard form
asked by hannah 
science
what is the meaning of fertilization?
asked by hannah 
college algebra
find the equation of the line that is parallel to the line y=15x and contains the point (1,4) y= find the distance d (p_1, and p_2) between the points p_1 and p_2 p_1=(2,1) p_2=(1,4)
asked by confusedtwo questions please help 
math
What does the line y = 3x  7 look like? horizontal vertical slanted right upwards slanted right downwards
asked by Chely 
Chemistry
You have a single crystal of 100% pure gold. Identify which of the following defects you would expect to be present at room temperature. Free surface Grain boundaries Vacancies Inclusions Substitutional impurity atoms Interstitial impurity atoms
asked by Paul 
Chemistry
Halflife N2O5 dissolved in CCl4 decomposes to give N2O4 and O2. The reaction is first order with a halflife of 1234 seconds. How long will it take, in seconds, for the concentration of N2O5 to fall to 1.1% of its initial value?
asked by Paul 
calculus
Find a number x0 between 0 and pi such that the tangent line to the curve y = sin x at x = x0 is parallel to the line y = x=2. I get that for both lines to be parallel to each other their slopes need to be the same. I found 1/2 = cos(x) but I get stuck
asked by asdf 
calculus
lim x>0 x^sin(x)
asked by Jim 
chemistry
Urbium (Ur) is an upscale element found in big cities. Its oxide (UrO2) is not very stable and decomposes readily at temperatures exceeding 66∘ C. The figure below shows how the rate of reaction varies with the concentration of UrO2 at 75∘ C. The rate
asked by lisa 
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.
asked by Chris 
Physics
An object is placed 4 cm in front of a concave lens of focal length 3 cm. Using the lens equation, find where the image will form and state whether it is a real or virtual image.
asked by Steve 
Science
A hirozontal force F works on a body of mass m1 and accelerates it by 5m/s^2. The same magnitude of horizontal force is exerted to another body of mass m2, which accerelates it by 2m/s^2. If m1 and m2 are combined, the acceleration provided by the force F
asked by Dwi 
Science
A box of 5 kg mass slides horizontally on the floor for along a distance 9m in 3s due to a constant force. The magnitude of the constant force is ...
asked by Dwi 
Physics
An object ob 2 kg mass is initially at rest on the ground. then, the object is pulled up by a 20N force in 4s before it is finally released. the maximum height that the one object can reach is ...
asked by Dwi 
Science
A 5kg stone is lifted by a rope. its acceleration is 3m/s^2. the tention of the rope is ...
asked by Dwi 
UNIVERSITY PHYSICS 1
Find the magnitude of vectors A=?+4j+4k B=?+2j+3k if angle between them 15 deegres a) By scalar product b) by vector product
asked by JORHO 
Math
A gardener is putting a fence along the edge of his garden. If he has 20 m of fence , what is the largest area he can enclose? How can a graph solve the problem? What quadratic equation represents the area of the garden?
asked by Praphul 
Instalment purchases
The cash price of a speed boat is RM60,000. Under an installment plan, a buyer may pay a 30% down payment followed by monthly payments for 5 years. If the interest is 6% on the reducing balance, calculate (i) the amount of interest using the constant ratio
asked by Jassie 
solid mensuration
Determine the area of the segment of a circle if the length of the chord is 15 inches & located 5 inches from the center of the circle.
asked by Cathy 
Math
1.What is the sum of the digits in the expanded form of the number 384cuberoot x5raised to the 20?What is 384cube root x5raised to the 20 in scientific notation?
asked by Aliza 
solid mensuration
Two perpendicular chords divide a circle with a radius of 13 cm into 4 parts. If the perpendicular distances of both chords are 5 cm each from the center of the circle, find the area of the smallest part. Please include solution. Thanks.
asked by Cathy 
solid mensuration
Find the area of a portion of a semicircle of radius 15 m that is outside the area of an inscribed square if the base of the square lies on the diameter of the semicircle. Please include solution. Thanks.
asked by Cathy 
Biochemistry
Appreciate if you could help me answering the following questions! thank you!! How would you prepare a 20% homogenate from a 2.0g of liver using 0.25M sucrose? why is it necessary to cool the homogenate during homogenization?
asked by Becky 
solid mensuration
A circle has an area equal to 25 pi sq.cm. Its diameter AB coincides with one of the sides of triangle ACB in which the vertex C lies on the circle. If the triangle has an area equal to 11 sq.cm, find its perimeter. Please include solution. Thanks.
asked by Cathy 
solid mensuration
Find the area of a cyclic quadrilateral whose 2 sides measure 4 & 5 units, & whose diagonal coincides with a diameter of the circle. Suppose the radius of the circumscribing circle is 2 sq.root of 3 units. Please include solution. Thanks.
asked by Cathy 
solid mensuration
Find the area of a segment of a circle whose diameter is 16 cm & the central angle measures 80 degrees. Please include solution. Thanks.
asked by Cathy 
political science PHL
hello can u help me please? write a few words about Machiavelli, Locke and how they are relevant today? John Locke is another philosopher who is considered as relevant today for some of his ideas he expressed. His writings were a great influence to the
asked by jenny 
political science PHL
how Hobbes, Machiavelli and Rousseau are relevant? little guidance please
asked by jenny 
political science PHL
is it a comprehensive answer? Machiavelli (in terms of political philosophy) Machiavelli was an Italian philosopher. A famous book he wrote is ‘The Prince’ which still have impact to today’s politics. It is about the rise and fall of states and what
asked by jenny 
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.
asked by Bob Any help is appreciated 
geometry
if two opposites vertices of a square are (0,1)and(4,3)find the other vertices
asked by shirsh 
Chemistry
How many grams of KHP (204.22 g/mol) were present in container if 49.36 mL of 0.2264M NaOH were needed to reach the end point of a titration? I'm confused on the formula you would use for this.
asked by T 
college algebra
1. find the equation of the line with the given properties. Express the equation in general form or slopeintercept form. perpendicular to the line 3x_y= 27; contains the point (9, 1) the equation of the line is ? 2. solve the polynomial inequality and
asked by confusedtwo questions please help 
Calculus
d/dx[lnsquare root of(x^3) cube root of (x+3) fifth root of (3x2)]
asked by Aaron 
Business maths  Instalment purchases
The cash price of a speed boat is RM60,000. Under an installment plan, a buyer may pay a 30% down payment followed by monthly payments for 5 years. If the interest is 6% on the reducing balance, calculate (i) the amount of interest using the constant ratio
asked by Jassie 
algebra
1. the function f(x)=6x/3x5 is one to one. find its inverse and check your answer. And on the second one can you tell me if I am correct. 2. solve the following exponential solution 7^2x+7^x+160=0 7^2 x+7^x59=0 (49x)+7^x59=0 49x/49=0/49 x=0/49 x=0
asked by Heathertwo questions please help 
English
(1) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventhgrade science, I have some experience with the faces
asked by Sandia 
physics
Two soccer players start from rest, 41 m apart. They run directly toward each other, both players accelerating. The first player’s acceleration has a magnitude of 0.55 m/s2. The second player’s acceleration has a magnitude of 0.43 m/s2. (a) How much
asked by Anonymous 
statistics
sample size needed with a mean of 100,standard deviation of 20 for the the population of normal adults an iq range to fall between 2 iq points with 95% confidence interval
asked by krissy 
Physics
a tennis ball is thrown vertically upward from the ground and the student gazing out of the window sees it moving upward pass him at 5 m/sec. the window is 10 m above the ground. how high does the ball go above the ground
asked by john daniel 
Trigonometry
What is sin(cos^1 a) when 0 < cos^1 a < 90
asked by Rachel 
college algebra
1. solve the following logarithmic equation log_8(x+8)+log_8(x+7)=2 what is the exact solution 2.se the rational theorem to find all the real zeros of the polynomial function. use the zeros to factor f over the real numbers. f(x)=4x^4+5x^3+9x^2+10x+2
asked by Ladybugtwo questions Reiny please help 
physics
an automobile moving at constant velocity of 15m/sec passes a gasoline station. two seconds later another automobile leaves the gasoline station and accelerates at a constant rate of 2m/ sec squared. how soon will the second automobile overtake the first ?
asked by john daniel 
Science
You may have heard "Nothing is Free" explain why this is true
asked by Lance 
Statics
A candy machine distributor collects the coins from 100 machines. The standard deviation is $3.25. With probability 98%, what is the maximum error about the true mean that will result?
asked by Heather 
Statics
A random sample of 100 cans of peaches has an observed mean weight of 48.5 ounces and a standard deviation of 2.4 ounces. Determine the lower limit of the 95% interval for the true mean weight. The can label says that the can weights 48 ounces. Comment on
asked by Heather 
Statics
A power company takes a random sample of its delinquent account files. For 400 accounts, the average delinquent amount was $239.30 with a standard deviation of $14.52. With 99% probability, determine the maximum error of the estimate for the mean of all
asked by Heather 
Statics
In designing an experiment, a psychologist is willing to assume that the underlying distribution for the time to learn a list of words is approximately normal with a standard deviation of 40 seconds. He wants to be 95% sure that the maximum error of his
asked by Heather 
Social Studies
Match each statement below with the constitutional principle it illustrates. PPopular soverignty RRepublicanism FFederalism LLimited Government SSeparation of powers CChecks and balances Citizens elect senators to Serve in Washington, D.C. R? The
asked by Jerald 
math
the quotient of 65 and y translated into math
asked by holly 
Physics HW Help, Please
What is the energy required to accelerate a 1600 kg car from rest to 33 m/s?
asked by Mike 
math  linear programming
A woman wishes to invest $12,000 in three of bonds: municipal bonds paying 7% interest per year, bank investment certificates paying 8%, and highrisk bonds paying 12%. For tax reasons she wants the amount invested in municipal bonds to be at least three
asked by Sky 
chemistry
How many atoms of tin are necessary to react completely with 7.42 x 10(24th)g of HF. Sn(s) + 2HF(g) = SnF2(S) + H2 (g)
asked by curt 
Cultural Anthropology 101
What do I see as the strengths and weaknesses of each of these three kinds of relativism. I posted my answer but apparently I am missing something from the text that I am not grasping can someone please help me.
asked by mandy 
grammar
revise the following sentences to eliminate faulty sentence structure, making them clear and grammatically need help with the following sentences: An effective Web site is well designed, provides useful information, and links are given to other relevant
asked by miguel 
College Math
Volunteers working to raise funds for a new community library sold 1000 raffle tickets at $10 each. Tickets are to be randomly drawn and prizes are awarded as follows: one prize of $1,000, twenty prizes of $50 and one hundred prizes of $20. What is the
asked by James 
math
The area of a table top can be represented by l× w where l is the length and w is the width.What is the area of the table top if l=60 in and w=40 in?
asked by Kim 
yeah
a farmer wants to fence in three sides of a rectangular field with 1,000 feet of fencing. the other side of the rectangle will be a river. find the dimensions of the field.
asked by judy 
college physics
A cubic crate of side s = 2.5m is topheavy: 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
asked by chris 
Chemistry
What is the molar mass of a compound if a gaseous sample has a density of 2.807 g/L at 18 °C and 728 torr?
asked by Sarah 
Chemistry
Dimethylamine burns in oxygen according to the following equation: 4 C2H7N + 15 O2 → 8 CO2 + 14 H2O + 2 N2 (a) How many liters of O2 at 35 °C and 0.840 atm will be needed to burn 7.70 L of C2H7N at 35 °C and 0.840 atm? (b) How many liters of CO2 at 35
asked by Sarah 
maths
4 1\6
asked by maryum 
science
To 90.0mL of a solution that contains 0.100M Cr(NO3)2 and 0.490M HNO3 is added 30.0mL of 0.170M K2Cr2O7. The dichromate and chromium(II) ions react to give chromium(III) ions. Write a balanced net ionic equation for the reaction.
asked by it 
Math
Volunteers working to raise funds for a new community library sold 1000 raffle tickets at $10 each. Tickets are to be randomly drawn and prizes are awarded as follows: one prize of $1,000, twenty prizes of $50 and one hundred prizes of $20. What is the
asked by James 
math
3 less than or equal to 4x3 less than 19?
asked by Joel 
math
The graph shows the cost C in dollars to rent a car for one day as a function of the number m of miles driven. Which of the following functions models the situation?
asked by Jonathan 
physics
A cylinder is fitted with a piston, beneath which is a spring, as in the drawing. The cylinder is open to the air at the top. Friction is absent. The spring constant of the spring is 4100 N/m. The piston has a negligible mass and a radius of 0.010 m. (a)
asked by gretch 
Chemistry
how can a salt be related to a particular acid and a particular base
asked by Dimitri 
Chemistry
how can a salt be related to a particular acid and a particular base
asked by Dimitri 
grammar
need help with this one : 2. To enroll in film school being my primary goal, so I am always saving my money and watching for scholarship opportunities.
asked by miguel 
math
an investor invested a total of $2,900 in two mutual funds. One fund earned a 7% profit while the other earned a 2% profit. If the investor's total profit was $108, how much was invested in each mutual fund?
asked by sarah evans 
MATH
MY DAUGHTERS HOMEWORK IS TO MAKE APPLE 10 PACKS. SOME ARE RED AND SOME ARE YELLOW PLS HELP
asked by jenette 
physics
When a 2.9 kg object is suspended in water, it "masses" 1.5 kg. What is the density of the object?
asked by kev 
physics
Calculate the speed of a 10,000 kg airliner with a kinetic energy of 3.1 x 10^9 J.
asked by Drew 
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 104)
asked by Chris 
physics
Calculate the speed of a 10,000 kg airliner with a kinetic energy of 3.1 x 10^9 J.
asked by Drew 
Chemistry
If the sign contains neon at a pressure of 1.72 torr at 32 C, how many grams of neon are in the sign? (The volume of a cylinder is pie r2 h.)
asked by Sam 
geometry
abcd is a rectangle. If measure angle bac=30 find the measure of angle dbc
asked by sangini 
Chemistry
If you place 10.0 L of propanol (C3H8O) in a sealed room that is 7.5 m long, 3 m wide, and 3 m high, will all the propanol evaporate? If some liquid remains, how much will there be? The vapor pressure of propanol is 10.7 torr at 25 °C, and the density of
asked by Sarah 
calculate rms
calculate the rms speed of nf3 molecules at 23 C?
asked by Sam 
Math
Can someone please help me? certain medical diagnostic test is used to determine if people have pinkyitis and it is known that 1 in 1300 Americans has the disease. The test correctly diagnoses the presence of pinkyitis 97% of the time and it correctly
asked by James 
Math
Can someone please help me. A single card is selected from a standard 52card deck. B= the drawn card is black; R= the drawn card is red; Q= the drawn card is a queen; F= the drawn card is a face card ( a king, queen or jack). Without finding the
asked by James 
college algebra
1.for the given function f&g, find the following and state the domain of each result. f(x)=2x+1/9x5; g(x) 4x/9x5 a.(f+g)(x)=? What is the domain? b. (f/g)(x)=? what is the domain? 2.the function f is defined as follows {x+6 if 5 ¡Üx1 a. the domain of
asked by cnfusedsteve please 
math
The number of patients treated at Dr. Artin’s dentist office each day was recorded for nine days. These are the data: 6, 6, 6, 5, 5, 6, 5, 6, 5. Find the mean, median, mode, and range of the data. If necessary, round to the nearest tenth
asked by m 
Analytical Chemistry
Consider the titration of 100.0 mL of 0.100 M NaOH with 1.00 M HBr. Find the pH at the following volumes of acid added and make a graph of pH versus Va: Va = 0,6 and 12 mL
asked by canas 
Chemistry
How do you find the concentration of an acid if 35.0 mL of 0.20 M NaOH is required to neutralize 45.0 mL of HCL. Do you know how I would calculate this?
asked by Arky 
physics
(a) a spherically shaped buoy is made from wood, which has a specific gravity of 0.6. find the acceleration of the buoy when released from rest at the bottom of a freshwater lake. (b) if the buoy starts out 10 m below the surface of the water, determine
asked by zoe 
college algebra
1. answer the following for the given quadratic function f(x)=x^2+10x11 a.what is the vertex (h,k) of f? b. what is the axis of symmetry? Please show work. 2. if f(x)=Inx, g(x)=e^5x, and h(x)=x^6 find the following a. find (fog)(x)= what is the domain of
asked by cnfusedsteve please 
Macroeconomics
Goods and services that are not sold in markets, such as food produced and consumed at home and some household articles, are generally not included in GDP. How might the absence of these values mislead one when comparing the economic wellbeing of the
asked by Kensi 
Physics
Consider an artery with diameter 10 mm which runs horizontally. Somewhere along the artery there is a 3 cm long constriction which reduces the diameter to 5.40 mm. Assume that before and after the constriction the blood flows at a rate of 0.310 m/s, and
asked by Sam 
chemistry
pls help me. A buffer was prepared by dissolving 0.100 mol of the weak acid HA (Ka = 1.00 × 10−5) plus 0.050 mol of its conjugate base Na+A− in 1.00 L. Find the pH.
asked by canas 
EnglishSpeech
I am workng on my introduction part of my speech and here is my transition sentence: With my voice, I can make a difference in 5 different ways. Would these be like the examples of the "5 different ways" ? preventing people from doing a bad action, helping
asked by Emma 
calculus
A watertrough is 10m long and has a crosssection which is the shape of an isosceles trapezoid that is 30cm wide at the bottom, 80cm wide at the top, and has height 50cm. If the trough is being fi lled with water at the rate of 0.2 m3/min, how fast is the
asked by asdf 
Chemistry
How to work out: The halflife of Indium116 is 14 seconds. How long will it take for 32g of this isotope to decay to 1.og?
asked by Anonymous 
Chemistry
Antacid tab is dissolved in water and a few drops of phenolphthalein is added yielding bright pink solution. 0.2025 M HCl added until pink color disappears. The 0.2147 M NaOH added until it turns light pink for ~30 seconds. mass on antacid tablet = 1.056g
asked by T 
Chemistry
A sample of charcoal is found to have only 1/8th of Carbon14. Halflife of Carbon14 is 5730yrs, what is the age of the charcoal?
asked by Anonymous 
chemistry
pls help i need the answer not jus part of it, pls im really stuck out here. A buffer was prepared by dissolving 0.100 mol of the weak acid HA (Ka = 1.00 × 10−5) plus 0.050 mol of its conjugate base Na+A− in 1.00 L. Find the pH.
asked by canas 
chem
Which ionic compound is expected to form from combining the following pairs of elements? yttrium and oxygen i put YO but its wrong
asked by Samantha 
Chmistry
28.31 mL of O2(g) at 1.00 atm pressure dissolve in 1.00 L of water at 25.0 °C. If the pressure of O2(g) is raised to 3.86 atm what will the new concentration of oxygen be expressed in mol/L
asked by Anonymous 
ELA
Is it possible if you can shorten the text: Perindnes Tree, its sweet fruit throughout the tree is remarkably pleasing; a dove’s delight living in the tree. Living in India with rich and vibrant colors exotic, expressive, and aromatic; what could the
asked by S 
math
How would we solve for q: 6n5q/11t=6
asked by Chely 
math
How would i solve this x+7/14=13/7x
asked by Chely 
math
A flagpole casts a 32ft shadow. A boy who is 6 feet tall is standing near the flagpole casting a 16ft shadow. They form similar triangles. How tall is the flagpole?
asked by veronica 
ELA
can you shorten it now: Living in India with rich and vibrant colors exotic, expressive, and aromatic; what could the doves possibly live in fear with? Dragons are the doves enemies & fear the perindnes tree. The shadow of the tree was casted east, the
asked by S 
MATH
AN INVESTMENT OF $5000 IN THE STOCKMARKET WITH THE VALUE INCREASED BY 13% WILL EARN $650 FROM THE VALUE OF THE STOCK ($5000 x0.13) the new value would be $5650($5000 PLUS $650)
asked by booker 
math
how do I solve: 3/7(m+5)=3+2m
asked by Stella 
math
How do I solve 7/2t+2=4+7t
asked by Stella 
calculus
use the given zeros to find the remaining zeros of the function h(x)=x^49x^3+12x^2+138x1360 zero:35i enter the remaining zeros of f please show work
asked by Heather 
Chemistry
Calculate delta H for this reaction: N2 + 3H2 > 2NH3 I am given the bond dissociation energy for NN (163 kJ/mol), HH (436 kJ/mol), and NH (391 kJ/mol) I can't seem to find a similar problem anywhere, they are all given 2 or 3 similar equations.
asked by Emily 
Finance
Calculating Cost of Equity. The Lo Tech Co. just issued a divident of $2.20 per share on its common stock. The company is expected to maintain a constant 6 percent growth rate in its dividends indefinitely. If the stock sells for $43 a share, what is the
asked by Jina 
Algebra
Please show me step by step on solving this problem? log₅(2x9)+ log₅(x+2)= 1 Thank you I'm getting 2x²5x28=0 which is a empty set. Trying to make sure I'm correct if I am. Thanks so much for your help
asked by sandy 
Medical Terminology
In the brain area, what function controls the sleep cycle? (a) pons (b) midbrain (c) mdulla oblongata (d) hypothalamus When I looked in my medical terminology book,it had told me something else and these did not seem to be th answer. According to the book
asked by Carol 
college algebra
for the given function f&g, find the following and state the domain of each result f(x)=2x+1/9x5; g(x)4x/9x5 a.(f+g)(x)= what is the domain? b.(f/g)(x)= what is the domain? please show work answer the following for the given quadratic function
asked by spazed out 
physics
After 6.00 kg of water at 80.4 oC is mixed in a perfect thermos with 3.00 kg of ice at 0.0 oC, the mixture is allowed to reach equilibrium. When heat is added to or removed from a solid or liquid of mass m and specific heat capacity c, the change in
asked by angie 
physics
The wattage of a commercial ice maker is 226 W and is the rate at which it does work. The ice maker operates just like a refrigerator and has a coefficient of performance of 3.90. The water going into the unit has a temperature of 15.0°C, and the ice
asked by angie 
physics
The hot reservoir for a Carnot engine has a temperature of 926 K, while the cold reservoir has a temperature of 441 K. The heat input for this engine is 3730 J. The 441K reservoir also serves as the hot reservoir for a second Carnot engine. This second
asked by angie 
Math
Could someone explain how to solve this math problem? I've graphed it, but I'm not sure how to solve the rest of the questions. The National Oceanic and Atmospheric Administration (NOAA) has been measuring atmospheric carbon dioxide concentations (in parts
asked by alice 
7th grade language arts Ms. Sue please
1. A synonym for writhe is (1 point) hop. twist. cry. 2. In which part of the plot is the conflict resolved? (1 point) exposition climax resolution 5. The part of a narrative that introduces the setting and the characters is called the (1 point) climax.
asked by Delilah 
precalculus
Find all solutions of the system of equations. Order your answers from smallest to largest x, then from smallest to largest y.) x^2 + y2= 53 x2− y2= 3
asked by amaa 
chemistry
pls help. A weak acid HA (pKa = 5.00) was titrated with 1.00 M KOH. The acid solution had a volume of 100.0 mL and a molarity of 0.100 M. Find the pH at the following volumes of base added and make a graph of pH versus Vb: Vb = 0, 1, 5, 9, 9.9, 10, 10.1,
asked by Joycelyn 
precalculus
Find all solutions of the system of equations. (If there is no solution, enter NO SOLUTION.) 4x^2− 27y^3 = 35 8x^2+54y^3= 74
asked by amaa 
writing
I have to write a reflection paper about volunteering should I just write about what happened daily.
asked by R.T. 
PLEASE HELP!! PHYSICS
A 0.63kg metal sphere oscillates at the end of a vertical spring. As the spring stretches from 0.13 to 0.22 m (relative to its unstrained length), the speed of the sphere decreases from 5.95 to 4.75 m/s. What is the spring constant of the spring? (The
asked by Elizabeth 
PLEASE HELP ME!
A 68.6kg circus performer is fired from a cannon that is elevated at an angle of 43.6° above the horizontal. The cannon uses strong elastic bands to propel the performer, much in the same way that a slingshot fires a stone. Setting up for this stunt
asked by Jessica 
learning skills
what is the best way to learn a new material?
asked by Anonymous 
Probability
Can someone please help me? certain medical diagnostic test is used to determine if people have pinkyitis and it is known that 1 in 1300 Americans has the disease. The test correctly diagnoses the presence of pinkyitis 97% of the time and it correctly
asked by James 
Coordination Chemistry
A particular metal ion octahedral complex has the same number of unpaired electrons (nonzero) whether the complex uses weak or strong field ligands. List several fourth period transition metal ions that could have this behavior. Also, if someone could
asked by Alisha 
Probability
Can someone please help me. A single card is selected from a standard 52card deck. B= the drawn card is black; R= the drawn card is red; Q= the drawn card is a queen; F= the drawn card is a face card ( a king, queen or jack). Without finding the
asked by James 
biochemistry
discuss at least six factors affecting the performance of an enzyme. Thank you.
asked by amaa 
cis
1. Find a mortgage loan calculator to determine what your monthly payments would be on a new house borrowing $200,000 for 15 years at 3.5% interest. What is your monthly payment? (Include the URL)
asked by jones 
physics
A 1000 kg car is rolling down the street at 2.5 m/s. How fast would a 2500 kg car have to collide into it in order to bring it to rest (0 m/s)?
asked by eileen 
math
A rectangular room is 20 feet long and 10 feet wide. If you paint a red rectangle on the floor that is 8 feet long and 3 feet wide, what is the area of the floor in the room that will NOT be red?
asked by Wilmada 
Intermediate Algebra
what is 2x to the second power equals 54
asked by Megan 
algebra
A water faucet is located in one corner of Juan's garden. He wants a garden hose long enough to reach the farthest corner of the garden. The garden is rectangular with sides of 10 feet and 15 feet. How long should the garden hose be? Show your work
asked by Alexius 
math
Iused 8 cubes to make a large cube.How many cubes will i need to make a 4^4^4 cube ?
asked by CHARLIE 
math
Input 1 2 4 5 10 12 Output 3 5 9 11 21 25 Write the rule
asked by noah 
algabra 2
list all the possible rational roots of 6x42x3+5x2+x10=0
asked by dashana 
English
i need some help with qustions for this story Identities  W.D. Valgardson Normally, he goes cleanshaven into the world, but the promise of a Saturday liquid with sunshine draws him first from his study to the backyard, from there to his front lawn. The
asked by Mohammad 
communication
we know that relationships develop in satges. how does movement through relationships work
asked by A 
PHYSICS
The wattage of a commercial ice maker is 226 W and is the rate at which it does work. The ice maker operates just like a refrigerator and has a coefficient of performance of 3.90. The water going into the unit has a temperature of 15.0°C, and the ice
asked by ag 
Trigonometry
triangle ABC is isosceles, with AB=AC=15cm , and m
asked by Rachel 
physics
A potter's wheel having a radius 0.45 m and a moment of inertia of 14.9 kg · m2 is rotating freely at 49 rev/min. The potter can stop the wheel in 8.0 s by pressing a wet rag against the rim and exerting a radially inward force of 72 N. Find the effective
asked by heather 
algebra
suppose you want to build a rectangular sandbox where the width is 4 ft less than the length and the diagonal is 4 ft longer than the length. what are the dimensions
asked by carlos 
physics
Two astronauts, each having a mass of 78.5 kg, are connected by a 10.0m rope of negligible mass. They are isolated in space, moving in circles around the point halfway between them at a speed of 5.50 m/s. Treating the astronauts as particles, calculate
asked by heather 
algebra
A rectangle has a width of 8 meters. The length is twice as long as the width. What is the length of the diagonal? Show your work
asked by Alexius 
7 th grade math
What is the rule for this function? input 1 output 3 input 2 output 5 Input 4 output 9 Input 5 output 11 Input 10 output 21 Input 12 output 25 Please help now thanks
asked by noah 
Statistics
62.Refer to the Baseball 2009 data, which report information on the 30 Major League Baseball teams for the 2009 season. a. At the .05 significance level, can we conclude that there is a difference in the mean salary of teams in the American League versus
asked by Dee 
physics
After 6.00 kg of water at 80.4 oC is mixed in a perfect thermos with 3.00 kg of ice at 0.0 oC, the mixture is allowed to reach equilibrium. When heat is added to or removed from a solid or liquid of mass m and specific heat capacity c, the change in
asked by g 
7 th grade math
Input 1 2 4 5 10 12 Output 3 5 9 11 21 25 What is the rule for this function ? If adding add what tried 2 Need help please
asked by noah 
chemistry
Rank these ions according to ionic radius (lowest to highest) Mg^2+, N^3, O^2, Na^+, F^ can you explain how you got your answer? thanks!
asked by dr. bob rocks 
calculus
take the limit as x goes to infinity: (14x/(14x+3))^(4x)
asked by Help!! 
algebra
The measurement of two angles of a triangle are 39 degrees and 70 degrees. Find the measurement of the third angle. Show your work
asked by Alexius 
math
Are the following statements and valid null and alternative hypotheses? (
asked by ed 
algebra
The measurement of two angles of a triangle are 44 degrees and 56 degrees. Find the measurement of the third angle. Show your work
asked by Alexius 
algebra
The measurement of two angles of a triangle are 69 degrees and 34 degrees. Find the measurement of the third angle. Show your work
asked by Alexius 
english literature
Came to America to find freedom to worship and the Promised Land =a.)The NorthPuritanism b.)The SouthGentlemen Planters c.)Both
asked by corey 
physics
Three resistors are connected to a 20 V battery as shown. The internal resistance of the battery is negligible. (a) What is the current through the 15 resistance? (b)What is the voltage difference across the 20 resistance?
asked by luz 
science
A wolf us chasing a rabbit.Graph the wolf's motion using the following data: 15 m\s at 0 s,10 m\s at 3 s,1 m\s at 4 s,and 0 m\s at 5 s.What does the graph tell you???
asked by anna 
Chemistry
A set of bookshelves rests on a hard floor surface on four legs, each having a crosssectional dimension of 2.7 5.2 cm in contact with the floor. The total mass of the shelves plus the books stacked on them is 246 kg. Calculate the pressure in pascals
asked by Courtney 
7 th grade math
Input 1 2 4 5 10 12 Output 3 5 9 11 21 25 What is the rule for this function ? If adding add what tried 2 Need help please
asked by noah 
CRT 205
I am having trouble finding the premise in the article Cyberbullying is Not Worse than Physical Bullying
asked by T 
Human Resources
9.1 The following data represent total personnel expenses for the Palmdale Human Service Agency for past four fiscal years: 20X1 $5,250,000 20X2 $5,500,000 20X3 $6,000,000 20X4 $6,750,000 Forecast personnel expenses for fiscal year 20X5 using moving
asked by Jessie 
math
A righttailed test is used when .
asked by ed 
chemistry
How would the 2s and 3p orbitals differ from the 1s and 2p orbitals? Check all that apply. possible answers The and orbitals would have more nodes than and orbitals. The orbital would be the same shape as the orbital but would be smaller in size. The and
asked by kdb 
physics
A baseball is thrown at an angle of 40.0 above the horizontal.The horizontal component of the baseball's initial velocity is 12.0 m/s^2 . What is the magnitude of the object's acceleration?
asked by IDK 
physics
A baseball is thrown at an angle of 40.0 above the horizontal.The horizontal component of the baseball's initial velocity is 12.0 m/s^2 . What is the magnitude of the object's acceleration?
asked by IDK 
algebra
Two angles of a scalene triangle measures 42 degrees and 70 degrees. Which of the following is the measure of the third angle?
asked by Alexius 
Science: Physics
A force of 50 N directed at an angle of 45 degrees from the horizontal pulls a 70 kg sled across a frictionless pond. The acceleration of the sled is most nearly (sin 45 degrees = cos 45 degrees = 0.7).
asked by Chad 
Chemistry
25.00 mL of a solution of oxalic acid are titrated with 0.2586 m NaOH (aq). The stoichiometric eend point is reached when 43.42 mL of the solution of base is added. What is the molarity of the oxalic acid solution? Oxalic acid reacts with sodium hydroxide
asked by ANONYMOUS 
Chemistry
When excess solid Mg(OH)2 is shaken with 1.00 L of 1.2 M NH4Cl solution, the resulting saturated solution has pH = 9.30. Calculate the Ksp of Mg(OH)2
asked by Anzeel 
World History
How might a totalitarian state today be different from one during Stalin's time of rule? Explain.
asked by Anonymous 
English
Anyone read I am looking for the queen's dream in Aeschylus' Persians;what was interpreted as and the meaning of it
asked by Nicole 
math
What is the rule for this function? Input 1 output 3 Input 2 output 5 Input 4 output 9 Input 5 output 11 Input 10 output 21 Input 12 output 25 Please help thanks
asked by noah 
biology
would you expect whitefish embryo cells to divide indefinitely?
asked by sam 
Microbiology
How are algae harmful to humans?
asked by Jerome 
PHYSICS
The wattage of a commercial ice maker is 226 W and is the rate at which it does work. The ice maker operates just like a refrigerator and has a coefficient of performance of 3.90. The water going into the unit has a temperature of 15.0°C, and the ice
asked by HELP 
Physics parachute
A man is descending in a parachute of total mass 125 kg with a constant velocity. What is the air resistance the parachutist experiences in N?
asked by Daryl 
Physics
Assuming there is no conduction or convection operating, a cold object in a warm room: A.Radiates more energy than it absorbs B.Absorbs more energy than it radiates C.Only absorbs energy; it does not radiate because it is colder than its environment.
asked by StressedStudent 
Physics
Which kind of pot would be better to use on a halogen cooktop? A. A shiny stainless steel pot B. A black cast iron pot C. It's equally OK to use either as long as you adjust the thickness so that the heat conduction is the same.
asked by StressedStudent 
Annuity
Ahmad bought a set of sofa and paid RM200 as a down payment. The balance was to be paid by monthly payments of RM150 for two years. The interest rate was charged 10% per annum based on the original balance. Find i) the amount of the loan, ii) the cash
asked by Faranina 
math
The ratio of the number of girls to the number of boys in a stamp club was 3 : 2 last year. When 15 boys joined the club this year, the ratio became 2 : 3. Find the total number of children in the club this year.
asked by jane 
PHYSICS
After 6.00 kg of water at 80.4 oC is mixed in a perfect thermos with 3.00 kg of ice at 0.0 oC, the mixture is allowed to reach equilibrium. When heat is added to or removed from a solid or liquid of mass m and specific heat capacity c, the change in
asked by HELP 
precalculus
Find the focus, directrix, and focal diameter of the parabola. 9x + 7y2 = 0 my answers were focus = 9/28,0 fd =9/7 directrix= 9/28 (this ans. is incorrect) what am I missing? pls help
asked by amaa 
precalculus
Find the focus, directrix, and focal diameter of the parabola. x = −4y2 I answered everything right except the directrix. which my ans was 1/16.
asked by amaa 
grammar
i need to correct them this sentences 4. Irony is when you expect one thing and get something else. 5. By turning off the water when you brush your teeth, you can save up to eight gallons of water per day.
asked by miguel 
math
What is the rule for this function? Input 1 output 3 Input 2 output 5 Input 4 output 9 Input 5 output 11 Input 10 output 21 Input 12 output 25 Please help thanks
asked by noah 
chemistry
At 25°C the vapour pressure of pure pentane is 511 torr and that of hexane is 150. torr. What is the mole fraction of pentane in a pentanehexane solution that has a vapour pressure of 333 torr at 25°C?
asked by paul 
Trigonometry
what is the trigonometric form of z=1+i?
asked by Josh G. 
statistics
historically, the mean timr to complete this statistics test is 54 minutes with a standard deviation of 9 minutes. how much time should i allow, if my goal is for 95% of the students to be able to complete this test
asked by chavell 
Chemistry
The compound CH3F has van der Waals constants a = 5.009 atm•L2 /mol 2 and b = 0.0562 L/mol. Using both the ideal gas law and van der Waals’s equation, calculate the pressure expected for 25 mol of CH3F gas in a 5.00L container at 75 °C. no idea how
asked by Sarah