Questions Asked on
May 2, 2010

Chemistry
A battery is constructed based on the oxidation of magnesium and the reduction of Cu^2+. The initial concentrations of Mg^2+ and Cu^2+ are 1.2*10^4M and 1.5M, respectively, in 1.0L halfcells. The initial voltage of the battery is 2.83V with the standard
asked by Emma 
chemistry
SO2 (5.00 g) and CO2 (5.00 g) were placed in a 750.0 mL container at 50.0 °C. The partial pressure of CO2 in the container was __________ atm.
asked by nick 
math
Show that if a rectangle has its base on the xaxis and two of its vertices on the curve y = e^x^2 , then the rectangle will have the largest possible area when the two vertices are at the points of inflection of the curve.
asked by Hou 
math
Electrical system are governed by Ohm's law, which states that V = IR, where V=voltate, I=current, and R=resistance. If the current in an electrical system is decreasing at a rate of 9 A/s while the voltage remains constant at 14 V, at what rate is the
asked by christine 
CHemistry
Arrange the following compounds in order of decreasing ease of elution from a column of silica gel: a) 2octanol; b) 1,3dichlorobenzene; c) tertbutylcyclohexane; d) benzoic acid I was wondering if this was the correct order of it: Tertbutylcyclohexane >
asked by Johnny 
chemistry
A bottle containing a standard solution of KMnO4 is found to have brown stains on the inside. Why will this KMnO4 be of no further use for quantitative experiments?
asked by red 
Chemistry  Bond Order
What is the bond order of the diatomic molecule BN and is it paramagnetic or diamagnetic?
asked by Coldier 
Calculus
Emily and Clare kick a soccer ball at the same time. Emily kicks it with a force of 120 N at an angle of 60 degrees and Clare kicks it with a force of 200 N at an angle of 120 degrees. The angles are measured from a line between the centres of the two
asked by Bobby 
Calculus
A cruise ship's captain sets the ship's velocity to be 26 knots at a heading of 080 degrees. The current is flowing toward a bearing of 153 degrees at a speed of 8 knots. What is the ground velocity of the cruise ship?
asked by Bobby 
Chemistry
Which of the following substances has the greatest solubility in water? A. Ca(OH)2, Ksp = 6.5 × 106 B. Ag2SO4, Ksp = 1.5 × 105 C. PbI2, Ksp = 7.9 × 109 D. Zn(IO3)2, Ksp = 3.9 × 106 E. BaF2, Ksp = 1.5 × 106
asked by Marco 
Calculus
An airplane is flying at 550 km/h on a heading of 080 degrees: The wind is blowing at 60 km/h from a bearing of 120 degrees. Find the ground velocity of the airplane.
asked by Ariza 
calculus
A small aircraft, on a heading of 225 degrees, is cruising at 150 km/h. It is encountering a wind blowing from a bearing of 315 degrees at 35 km/h. Determine the aircraft's ground velocity.
asked by A 
College Chemistry
what is the approximate pH of a solution labeled 0.050 M HClO? I realized my mistake on my last post but this isnt a strong acid nor a strong base so how do i solve this?
asked by jahil 
chemistry
how many drops of 0.5M NaOH are needed to neutralize 10 drops of 1.0M HCl? What would be the pH of the neutral solution?
asked by kristy 
Chemistry
Calculate the freezing and boilingpoint changes for a solution containing 12.0 g of naphthalene (C10H8) in 50.0 g of benzene.
asked by Mariah 
Chemistry
Which one of the following pairs of 0.100 mol L1 solutions, when mixed, will produce a buffer solution? A. 50. mL of aqueous CH3COOH and 25. mL of aqueous CH3COONa B. 50. mL of aqueous CH3COOH and 25. mL of aqueous HCl C. 50. mL of aqueous NaOH and 25. mL
asked by Macky 
Physics
a thimble is 32.0 cm from a spherical concave mirror. The focal point lenght of the mirror is 11.0 cm. What is the image position?
asked by Luis 
Chemistry 11th Grade
Two oxides of lead were separately reduced to metallic lead by heating in a current of hydrogen and the following data obtained : (i) Mass of yellow oxide taken = 3.45g Loss in mass during reduction = 0.24g (ii) Mass of brown oxide taken = 1.227g Loss in
asked by Akashdeep 
physics
By what factor will the rms speed of gas molecules increase if the temperature is increased from 0 degrees C to 100 degrees C? Cant figure out correct answer I've tried everything, please help!!!
asked by Anonymous 
Chemistry
A buffer is prepared by adding 300.0 mL of 2.0 M NaOH to 500.0 mL of 2.0 M CH3COOH. What is the pH of this buffer? Ka = 1.8 × 105
asked by Anavia 
statistics
6. A sociologist interested in cultural differences compared women of two ethinic groups on a Role Approval Index (high scores mean high degrees of approval of one's social role). The results are as follows: Ethnic Group A: N = 15 M= 55 S2 = 6.5 Ethnic
asked by Anonymous 
physics help!
A tire is filled with air at 17 degreees C to a gauge pressure of 220 kPa. If the tire reaches a temperature of 39 degrees C, what fraction of the original air must be removed if the original pressure of 220 kPa is to be maintained? Please help step by
asked by Anonymous 
probability Please check answer
A bag contains 7 red marbles, 2 blue marbles, and 1 green marble. If a marble is selected at random, what is the probability of choosing a marble that is not blue? 7 red marbles plus 1 green marble = 8/10 = answer = 4/5
asked by Bart 
Logistics
supply chain management case analysis Dream Beauty Company questions and answers Can't find questions to this case analysis anywhere. Professor gives the case analysis ahead of time but doesn't give questions or answers and we have to read it and hope we
asked by Ashley 
Chemistry
If you have 0.100 M Pyridine titrated with 0.100 M HCl, choose an appropriate indicator and explain?
asked by Andrew 
spanish
can you unscramble this spanish word: amiaramtdrs?
asked by j.c. 
Calculus
Determine the resultant of the vector sum: 10 N at 045 degrees and then 8N at 068 degrees.
asked by Ariza 
College Chemistry
What is the approximate pH of a solution labeled 6 x 10^5 M HBr?
asked by jahil 
Calculus
A force of 200 N is resolved into two vector components of 150 N and 80 N. Are these rectangular vector components? Justify your response. If they are not, determine the directions of the components.
asked by Ariza 
Chemistry
How many moles of electrons are required to produce 23.8 g Cu from a CuSO4 solution?
asked by Angel 
geometry
Classify the triangle as right, acute, or obtuse if the measures of its sides are 28, 46, and 53.
asked by Matthew 
Chemistry
Calculate the boiling points of freezing points of the following solutions in water. a) boiling point of a 2.25m solution of propylene glycol (a nonelectrolyte) b)freezing point of a 1.0m solution of potassium iodide c)freezing point of a 1.0m solution of
asked by Ralph 
college Chemistry
What is thhe pH of 500mL of solution containing 0.0124 grams of Ca(OH)2?
asked by jahil 
Calculus
Resolve a 500N force into two rectangular vector components such that the ratio of their magnitudes is 2:1. Calculate the angle between the greater component and the 500N force.
asked by Kayla 
chemistry
An aqueous solution of Na2SO4 has a molal concentration of 0.293 mol kg1. Its density is 1.0350 g mL1. Calculate the molar concentration of Na2SO4.  mol L1 Calculate the mass percent of Na2SO4 in the solution.  % What is the mole fraction of
asked by write2khin 
math
the statue of liberty is 150 feet tall, and stands on a 150 foot pedestal. How far from the base should you stand to have the statue subtend the largest possible angle at your camera lens, assuming the camera is held 5 feet off the ground and the ground is
asked by Chris 
geometry
The Great Pyramid of Giza was built around the year 2560 BC. It was originally 481 ft high with a square base measuring 751 ft on each side. Its slant height was 611ft. Find the lateral surface area of the Great Pyramid. Round your answer to four
asked by nicole 
Chemistry
What precautions must be taken when you introduce the mixture of compounds to be separated onto the absorbent column
asked by James 
math Please someone help!!
a rectangular table is two times long as it is wide if the area is 98ft^2 what is the width and length of the table
asked by marry 
chemistry
A student investigating the properties of solutions containing carbonate ions prepared a solution containing 7.493 g Na2CO3 in a flask of volume 250 mL. Some of the solution was transferred to a buret. What volume of solution should be dispensed from the
asked by chemistrry help! 
physics
Unpolarized light with an average intensity of 750.0W.m^2 enters a polarizer with a vertical trasmission axis. the transmitted light then enters a second polarizer. the light that exits the second polarizer is found to have an average intensity of 125
asked by seema 
Trig
A railroad tunnel is shaped like semiellipse. The height of the tunnel at the center is 69 ft and the vertical clearance must be 23 ft at a point 16ft from the center. Find an equation for the ellipse.
asked by Stacey grahaM 
physics
point a is located 0.25 m away from a charge of 2.1 x 10 9 C. point b is located 0.50 m away from the charge. what is the electric potential difference Vb  Va between these two points?
asked by kim 
Algebra 2
a) A population of 460 animals that increases at an annual rate of 15%. Write an exponential function to model. b) Write an exponential function to model. Predict the value of the function after 5 years(nearest whole number). A population of 430 animals
asked by Alex 
Accounting
Jones Company had 100 units in beginning inventory at a total cost of $10,000.The company purchased 200 units at a total cost of $26,000. At the end of the year, Jones had 80 units in ending inventory. Instructions (a) Compute the cost of the ending
asked by Angie 
calculus
Boyle's law states that if the temperature of a gas remains constant, then PV = c. Where P is the pressure, V is the volume, and c is a constant. Given a quantity of gas at constant temperature, if V is decreasing at a rate of 13 in.^3/s, at what rate is P
asked by Hussain 
chemistry
In the chemical plating experiment zinc powder is dissolved in a hot NaOH solution to form sodium zincate according to the following reacton: Zn(s) + 2NaOH(aq) Na2ZnO2(aq) + H2(g) Answer true or false for each of the following statements regarding the
asked by chem help 
Chemistry
Answer the following question about copper (II) sulfate pentahydrate: a)how much water (in g) is there in 10.0 g of the compound listed above? b)If you needed 2.50g of CuSO4 for a reaction but only had CuSO4 * 5H2O available, how many g would you need to
asked by Jack 
chemistry 1
When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction How many grams of calcium carbonate are needed to produce 49.0 of carbon dioxide at STP?
asked by safwan hakim 
Trig
Suppose you would like to cross a 204 ft wide river in a boat. Assume that the boat can travel 37 mph relative to the water and the current is flowing westbat a rate of 6mph. What bearing should be chosen so that the boat will land at a point exactly
asked by Stacey grahaM 
Chemistry
A buffer contains 5.00 M acetic acid and 5.00 M acetate anion. Gaseous HCl (0.010 mole) is added to 1.00 L of this buffer solution (the total volume does not change). For this buffer solution, the initial pH is_______and the final pH after the addition of
asked by Ivana 
English/language/writting
we have a speech do and we have to make an outline, so i did. my speech is on music so one of my ?'s on my outline is how many people (average) listen to pop music in the USA? can u help it's do tomorrow. thnx!!
asked by Morgan 
calc
the tangent line to the graph of y=sin x at the point (2pi/3, (radical 3)/2) crosses the sine graph at the point where x=?
asked by Lauren 
college physics
A cubic box of volume 4.1×10^2 m^3 is filled with air at atmospheric pressure at 20 degrees C. The box is closed and heated to 181 degrees C. What is the net force on each side of the box?
asked by Anonymous 
physics
an electron and a proton are initially very far apart (effectively an infinite distance apart.) they are then brought together to form a hydrogen atom, in which the electron orbits the proton at an average distance of 5.29 x 10 11 m. what is EPE final 
asked by lara 
physics
1. what happens to a narrow light beam that enters parallel to the principal axis on a spherical concave mirror? 2. what happens to a narrow light beam that passes through the focal point of a concave mirror before being reflected?
asked by kike 
math
A town now has a population of 300,000 people and an annual growth rate of 4.5%. If this rate continues, in how many years will the population be more than 500,000 people?
asked by Gio 
calculus
Two cars, one traveling north and one traveling west, collide at an intersection.The resulting momentum of the two cars together after the collision is 32 000 kg . m/s N30degreesW. Find the momentum of each car before the collision.
asked by Abi 
English
To My Valentine More than a catbird hates a cat, Or a criminal hates a clue, Or the Axis hates the United States, That's how much I love you. I love you more than a duck can swim, And more than a grapefruit squirts, I love you more than a gin rummy is a
asked by Sara 
chemistry lab
1) What does a high Boltzmann Distribution value indicate? (please explain I already read wikepedia articles) 2) For fluoroacetic acid the highest Boltzmann Distribution is when the dihedral angle is at 0°. However, going from chloro to bromo and then
asked by anonymous 
social studies
How did the geography help the romans prosper?
asked by Jessica 
physics
what would the speed of an observer be if a red(4.688x10^14Hz) traffic light appeared green(5.555x10^14Hz) to the observer?
asked by seema 
medical law and ethic
A patient rolling up a sleeve to have a blood sample taken is an example of what?
asked by Shun 
Chicago Manual (CM) and Council of Science Editors
Question 1 5 points Save Which of the following fields uses Chicago Manual of Style (CM) documentation? psychology history education biology Question 2 What information goes in the parentheses when using CM style numbered notes? the publishing information
asked by christopher 
Chemistry
DrBob, if you're still on...what do I do for NaCl??
asked by Stuck 
Math
Staley Watch Company reported the following income statement data for a 2year period. 2008 2009 Sales $210,000 $250,000 Cost of goods sold Beginning inventory 32,000 44,000 Cost of goods purchased 173,000 202,000 Cost of goods available for sale 205,000
asked by Angie 
sicence
If you place a metal ring in a region in which a magnetic field is rapidly alternating, the ring may become hot your touch, why? be as specific as you can
asked by simon 
Biology
Start by observing the living species around you. Ever wonder why a pollinator is attracted to a particular flower, or what would happen to predator species if a particular prey species is eliminated? If you were a scientist you could do an experiment to
asked by Lisa 
TRIG
Can someone please help me? Use identities to find the indicated value for each angle measure. sin θ = 12/13, cos θ > 0 Find cos (2θ).
asked by Debbie 
physics
A cubic box of volume 4.1×10^2 m^3 is filled with air at atmospheric pressure at 20 degrees C. The box is closed and heated to 181 degrees C. What is the net force on each side of the box?
asked by Anonymous 
Math
I'm confused.Can someone tell me if I have done this correct.I'm trying to get the average using a weighted scale: TOTAL GRADES: WEIGHT 90%  5% 100% 15% 95%  15% 90% 5% 94.5% 60% I multiplied the total grade
asked by Sue 
trig
how do i set this problem up? Find tan (s + t) given that sin s = 1/4, with s in quadrant 2, and sin t = 1/2, with t in quadrant 4.
asked by Dave 
chemistry
True or False? An equilibrium constant K_c=1x10^7 for a reaction indicates that the reaction favors product formation.
asked by Sheila 
Chemistry
An unknown compound analyzes to be 42.85% C, 7.20% H, and 49.95% N. A 0.915 g sample of the gas occupies 250. mL at 760. mm Hg and 100.°C. Type your answers using the format CH4 for CH4. Enter the elements in the order given. I have calculated the
asked by Megan 
ap chem
NH3 + H20 NH4+ + OH this is aqueous solution. In 0.0180 M nH3, THE [OH] is 5.60 X 10^4 M. it is assumed that the volumes are additive. Determine the value of the base ionization constant, kb, for NH3. i am not sure how to approach this problem. i don't
asked by rav 
PHYSICS
A sample of monatomic gas (ã = 5/3) is expanded adiabatically from an initial temperature, volume, and pressure of 230. °C, 7.00 litres, and 7.00 kPa, respectively, to a final volume of 10.0 litres. (a) What is the final pressure of the gas? (answer 3.86
asked by Chris 
Algebra II
The perimeter of a rectangular yard is 270 feet. If its length is 25 feet greater than its width, what are the dimensions of the yard?
asked by bev 
Art
Please help me unscramble these words:(foods) hdogtg hicps iclekp khecupt
asked by Caity 
Physics
would it be possible to view your body from headtotoe, while standing in front of a plane mirror that is only as tall as you? this is in the chapter mirror on my physics books
asked by Luis 
physics
the table below shows the values of the resistance, capcitive reactance and inductive reactance for five RCL circuits. in which circuit will the voltage lead the current? Resistance capacitive inductive reactance reactance a)50 ohm 288ohm 244ohm b)120 ohm
asked by seema 
Geometry
In Triangle ABC, a=7, b=6, and c=8. find angle B to the nearest degree?
asked by Sally 
Stats
You are to imagine that you are part of a select marketing group. This group is to consider the Colorado City Convention and Vistitors Bureau survey of 25 hotels. The survey is concerned with the current availability of rooms. They are as follows: 90,
asked by Jennifer 
economics
Suppose there are two goods. The demand for good 1 is q1=abp1+ep2 and the demand for good two is q2=abp2+ep1. a and b are strictly positive, e
asked by Emma 
business math
You invest $10,000 in Rapid Growth Funds, which appreciate by 3% per year, with yields reinvested quarterly. By how much will your investment have grown after 8 years?
asked by Anonymous 
Algebra1
The area of a playground is 221 yd2. The width of the playground is 4 yd longer than its length. Find the length and width of the playground. (Hint: Include correct units in your final answer.)
asked by Anonymous 
Chemistry
Calculate the density of carbon dioxide gas at 253K and 648 torr.
asked by Anonymous 
physics
what would the speed of an observer be if a red(4.688x10^14Hz) traffic light appeared green(5.555x10^14Hz) to the observer? a) 2.219x10^8 m/s b) 4.445x10^8 m/s c) 5.548x10^7 m/s d) 8.438x10^7 m/s e) 2.890x10^6 m/s
asked by seema 
Math: Is my answer correct?
I am not sure how to do this, just guesssing. A couple has a 2/3 probability of passing on brown eyes to their children. If they have four children, what is the probability that none of the children will have brown eyes? A) 8/27 B) 1/27 C) 1/81 D) 16/81
asked by bwb 
chemistry
what volume would 8g of He at.951 atm and 25c occupy?
asked by dan 
Chemistry
NH3(g) + O2(g) NO2(g) + H2O(g) Consider the above unbalanced equation. What volume of NH3 at 950. mm Hg and 33.5°C is needed to react with 190. mL of O2 at 485 mm Hg and 143°C? =? mL
asked by Megan 
physics problem
At body temperature the latent heat of vaporization of water is Lv = 2.26e3 kJ/kg. (a) A naked person with a surface area A = 1.55 m2 and a skin temperature = 37.3 degrees is in a sauna room at T = 82.0 degrees. The person's skin has an emissivity e =
asked by kelly 
Chemistry
A)250 g of LiBr is dissolved in 200g of water 100 degrees C. The solution is then cooled to 20 degrees C. How much precipitate (if any) is formed? B) 42 g of KCl is dissolved in 100g of water at 50 degrees C. The solution is then cooled to 20 degrees C.
asked by Jack 
math
The spring runoff from melting snow from a certain region is being accumulated in a reservoir. The reservoir is 450 yards long; and its rosssection is an isosceles triangle 40 yards wide at the top and 20square root(3) yards high. Water is flowing into
asked by Voh 
English
1. He lived to be eighty. 2. He lived until he was eighty. (Does #1 mean #2?) 3. He awoke to find himself famous. 4. He awoke and found himself famous. (Are both the same?) 5. He grew up to be a famous musician. 6. He grew up and became a famous musician.
asked by rfvv 
English
1. She dicided to write a third book. 2. She decided to write the third book. (Which one is right? Are both grammatical? What is the difference between them?)
asked by rfvv 
Chemistry
Find the pH experimentaly .1 ml before and .1 ml after the equivalence point if the experimental equivalence point was found to be at 35 ml. In this titration, you are titrating 0.500 M NaOH with 0.250 M HCl.
asked by Andrew 
HCR 230
Write a 350 to 700word response that familiarizes you with private payer plans and CDHP account types
asked by Tiff 
Chemistry
Consider a 980mL container at 133 °C in which the pressure of nitrogen oxide is 0.394x106 Pa. a) What mass of nitrogen oxide (in g) is present in this container? b) How many molecules is this? (a)g (b)molecules
asked by write2khin 
Physics ptoblem
At body temperature the latent heat of vaporization of water is Lv = 2.26 ¡Ñ 103 kJ kg−1. (a) A naked person with a surface area A = 1.55 m2 and a skin temperature £c = 37.3 ¢XC is in a sauna room at T = 82.0 ¢XC. The person's skin has an emissivity
asked by kelly 
chemistry
What volume of solution should be dispensed from the buret to provide 3.718 mmol CO3 2? answer in units of mL.
asked by chemistrry help! 
To SraJMcGin
SraJMcGin, you are one good english tutor I see here right now, can you please help me with some of my English posts. Please. I'll posts them on here if you'd like. Thanks
asked by Sara 
college physics
If 61.9 L of oxygen at 17.7 degrees C and an absolute pressure of 1.55 atm are compressed to 46.4 L and at the same time the temperature is raised to 49.3 degrees C, what will the new pressure be?
asked by Anonymous 
EnglishPlease Help
Can someone please have a moment to look at my other previous posts and correct them if they need to be corrected. Please halp me, I've been waiting for quite a long time. I'll appreciate all the help you could give me, thank you very much:) My posts are
asked by Sara 
science
I am doing a case study on MMR and MMR/Autism. The question I have been given is 'Does MMR cause autism?" Please can you suggest any websites etc. I need to find at least 5 sources to show for and against. Many thanks.
asked by josie 
Science
A car is traveling at 15 m/sec. Ten minutes later it is traveling at 70 m/sec. What is the acceleration?
asked by Jordan 
College Chemistry
For a certain firstorder reaction the rate constan is 2.9 s1. what is the fraction of the reactant remaining after 4 half lives?
asked by jahil 
Algebra
Determine which two equations represent perpendicular lines. (a) y = 3x – 6 (b) y = 1/3x + 6 (c) y = –1/3x + 6 (d) y = 1/3x – 6 Determine which two equations represent parallel lines. (a) y = –4x + 2 (b) y = 4x + 2 (c) y = 1/2x + 2 (d) y = –4x +
asked by Anonymous 
math
Determine if the given regular figures form semi regular tessellation. Triangle,decagon,15gon Yes or no
asked by tracy 
physics
If 3.68 m^3 of a gas initially at STP is placed under a pressure of 3.61 atm, the temperature of the gas rises to 34.2 degrees C. What is the volume? Need step by step help.
asked by Anonymous 
To Writeacher
Writeacher, I tried to change some sentences, and tried to add conjunctions in some, but I don't know if they seem to make sense.
asked by Sara 
aed204
• Create a 12 to 15slide Microsoft® PowerPoint® presentation addressing the following points: o Explain ways to debunk three of the five gender misconceptions listed above based on the results of the peer discussion and your own University Library
asked by scooby 
spanish
can you unscramble amiaramtdrs?
asked by j.c. 
spanish
can you unscramble amiaramtdrs?
asked by j.c. 
science
Granite comprising Stone Mountain crystallized from magma tens of kilometers within the Earth, but uplift and erosion has since laid this pluton bare. Assuming that erosion has only slightly modified the original shape of the more durable granite body,
asked by Amanda 
math
what is a mode
asked by seth 
English
I forgot to include a few more sentences I would like you to check, too. 1) Pamela is embarassed at his giving her presents though she thinks there is no harm in what he said to her. She is going to put aside (?) vanity. Being a virtuous girl, she is not
asked by Franco 
math
Alex must wrap two boxes. Both boxes are right rectangular prisms. The smaller box has a length of 12 inches. The larger box is similar to the first and has a length of 48 inches. Find the ratio of the amount of paper needed to wrap the large box to the
asked by Hannah 
SCI/275
I was just wondering if anyone can help me I am having a hard time with the assignment. Like I want to know what is APA format. And can I get an example of APA format because I don't know how to do it. Also what is cition format. PLEASE
asked by kasey 
Logical, ethical and emotional appeal
Question 12 Which of the following visual arguments contains an ethical appeal? none of the above 1 a bar chart of 2003 housing construction sales per state an advertisement for corn seed that shows a farmer and his family standing next to a tractor with
asked by christopher 
Chemistry
To what Celsius temperature must 44.5 mL of methane gas at 43.0°C be changed so the volume will be 63.0 mL? Assume the pressure and the amount of gas are held constant. I have already tried T1V1=T2V2
asked by Megan 
Chemistry
Which of the following compounds will melt ice at the lowest temperature? Sucrose, sodium chloride, or magnesium chloride?
asked by Jack 
literature
answers to exam 778900 the novel
asked by john 
Math SAT Sheet
1.) Find the domain and range for: f(x)= 4x20/ the square root of 36x^2 2.) Solve the equation: log6 (x11) + log6 (x6) = 2 3.) Solve the inequality: x^2  2x  3 is greater than 0
asked by Frank 
English
1. We decided to go abroad. 2. We made up our mind to go abroad. 3. We made a decision to go abroad. 4. We made up our minds to go abroad. (Are they all interchangable? Do we have to use the plural form 'minds' or the singular form 'mind'?) 5. We
asked by rfvv 
Math
The rectangular coordinates of a point are given. Find two sets of polar coordinates for the point. (3,3)
asked by Abbey(Please help) 
College psych  research class
Hi all. I have a question about creating graphs and other data tables using Excel spreadsheets et al. It's actually for a specific kind of project where I'm trying to work on taking a theoretical sample of subjects and and I'm torn trying to figure out how
asked by John 
lab chemistry please help!
1. You recorded maximum electrostatic potential values for the ANTI and SYN conformers. What is this value a measure of? How does this value relate to acid strength? Does the trend seen for these values agree with the pKa value trend for both conformers?
asked by anonymous 
environmental science
describes the water resource problem and how it came about. · provides a management and sustainment plan, in accordance with Appendix F, that might benefit both sides of the issue. · discusses the positive and negative aspects of the plan according to
asked by Anonymous 
Math
How many 3w by 6d bricks are needed to fill a 15 by 6ft area
asked by Eric 
English
Can you please help me rephrase these sentences taken from Letter 7 of Richardson's Pamelea, please? Thank you very much in advance. 1) Her master gave her two suits of fine Flanders laced headclothes, three pairs of fine silk clothes, several ribbons and
asked by Franco 
algebra
what is the solution of the following linear system? 5x  5y = 6 5/2x  5/2y = 6 a) none b) (2,2) c)(,2,2) d) infinite number of solutions and the answer i picked was a or d thanks :)
asked by poo 
science
how much chlorine gas in grams is obtained from the decomposition of 10.0g NaCl
asked by jasmine 
math: is this done correctly
There are 30 fish in a pond. We know that 13 of these fish are males, 4 of these males are salmon, and there are 8 salmon in the pond. What is the probability that a randomly chosen fish is a salmon, given that it is a male? I think they are just asking
asked by bwb 
algebra
find the slope and yintercept of y=3.7x2
asked by Anonymous 
math
what are all the coins? I know about the penny, dime, nickle, and quarter, but I'm not sure about the loonie and toonie. please name all the canadian coins.Thank You:)
asked by shakti 
Algebra1
The area of a playground is 221 yd2. The width of the playground is 4 yd longer than its length. Find the length and width of the playground. (Hint: Include correct units in your final answer.) (3 points) pleas show me how you got the answer. Thank you:)
asked by MW 
Health/SCI302
1. Compare and contrast how different electrolytes—sodium, potassium, and chloride—function in the body. 2. What effects might alcohol and caffeine have on hydration levels in the body?
asked by Toni 
Algebra
How can you mathematically prove that two lines are perpendicular?
asked by Anonymous 
algebra 2
Determine which two equations represent parallel lines. (a) y = –4x + 2 (b) y = 4x + 2 (c) y = 1/2x + 2 (d) y = –4x + 6
asked by Anonymous 
Number Theory
Can someone help me with this question How many integers from 1 to 10000 inclusive, are multiples of 2 and 5?
asked by Tay 
algebra
if 3/5 of a number exceeds its 2/7 by 44. find the number
asked by sheldon 
Social Studies
Outline the various steps in the exploration of: (a) the interior of North America; and (b) the Pacific coast
asked by Nelli 
Social Studies
Outline the various steps in the exploration of: (a) the interior of North America; and (b) the Pacific coast
asked by Nelli 
Chemistry
How much 0.10 M NaOH (in mL) is required to neutralize 8.00 mL of the 0.10 M HC2H3O2?
asked by John 
Trig
How do I solve this problem? tan (30° + x)
asked by Abby 
physics
When people sleep, their metabolic rate is about 2.6 times 10^4/(s*kg). How many Calories does a 75 kg person metabolize while getting a good night's sleep of 8.0 hr?
asked by ashley 
Social Studies
Outline the various steps in the exploration of: (a) the interior of North America; and (b) the Pacific coast
asked by Nelli 
physics
When you drop a marble does all of it's potential energy turn into kinetic energy or just some of it?
asked by Nicole 
begining algebra
A cyclist traveling at a constant speed completes 3/5 Of a trip in 1 1/2h. In how many additional hours will the cyclist complete the entire trip?
asked by me 
Chemistry
To what Celsius temperature must 44.5 mL of methane gas at 43.0°C be changed so the volume will be 63.0 mL? Assume the pressure and the amount of gas are held constant.
asked by Megan 
Chemistry
A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. Explain the chemical process
asked by Monica 
mathPLEASE HELP
Answer the following questions to determine why Euler’s formula continues to hold for the polyhedron formed by cutting corners off of an octahedron, : a. For an octahedron V = , ____,F = ____, and E = _____. b. When you slice off one corner of the
asked by KiKi 
algebraAm I right so far
Use the quadratic formula to determine the xintercepts (if any)f(x)=2x^2=2 am I right so far? f(x)ax^2+bx+c y=ax^2+bx+c y=2x^2+2 y=0=>2x^2+2=0 =>2x^2+2=0 ax^2=2,bx=2,c=0 x=b=sqrtb^2+4ac over 2a x=(2)+sqrt(2)^24(2)(0)over2(2) x=sqrt4+4over 2
asked by dani 
alegebra
a cellular phone company offers a contract for which the cost C, in dollars, of t minutes of telephoning is given C=0.25(t500)+80.95, where it is assumed that t>=500 minutes. What times will keep cost between $123.45 and $146.95?
asked by elaine 
geometryPLEASE HELP
1. Refer to the following line m: b. Name two rays on m that have endpoint B. d. Find a simpler name for the intersection of rays BA and AC the line m has points a b and c going on across like that on the line would the answer be ba and bc? what would the
asked by jessica 
Pshychology
article summary on Social Perception and Interpersonal Behavior: On the Selffulfilling Nature of Social Stereotypes by Snyder, Decker & Berscheid
asked by Debbie 
Chemistry
What is the pH of the solution created by combining 2.40 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HC2H3O2(aq)? Can somebody explain how to do this? I am stuck. I've tried solving for H+ concentration. I got .00024M and subtracted it from [OH].
asked by John 
Chemistry
In each of the following, determine how much solute (in g or mL) must be added to the correct quantity of water to make the given amount of solution at the correct concentration. a)KI to make 50.0mL of a 0.50 M solutioon b)12.0 M HCL to make 500 mL of a
asked by Kim 
Chemistry
the following questions are about colligative properties: a)How much would the freezing point change in a 2.5 solution of phenol in benzene? b)how much would the boiling point change in a 1.m solution of magnesium chloride in ethanol? c)Does adding sugar
asked by Kim 
Math
Can someone assist me in the right direction with this question? Find an equation of the line containing the given pair of points. (5,6) (1,3) The equation needs to be in slope intercept form. Thanks.
asked by Sarah 
calculus
Find the position function s(t) given acceleration a(t)=3t if v(2)=0 and s(2)=1.
asked by yach 
CHEMISTRYURGENT
HNO3 with pH 3 is mixed with 2 L KOH with pH 12. assuming volumes are additive what is the pH of the final solution? I have absolutely no idea how to do this. I do know the answer, though. I have a test tomorrow and I would really appreciate it if someone
asked by Maggie 
MATH ANALYSIS
I need help solving this problem algebraically, but I need to learn step by step!! Thanks so much cos 2x=cos x How do I do it?
asked by anonymous 
Cody
Write the following with rational, positive exponents. a. sqrt of 8 = 8^1/2 b. seventh root of 5^2 = 5^2/7 c. sqrt sqrt 6 = ??? d. fourth root of sqrt of 5^3 = ??? Can someone please check my work and help with "c and d"? Thanks.
asked by Math (URGENT) 
Math
3/4+1/2
asked by Sabrina 
general psycology
what is considered to be the normal average iq
asked by Anonymous 
marketing
what are two types of b2c marketing
asked by tina aklin 
improper integral
can any one explain how to evaluate this improper integral i.e. the function is not continuous at 0 neither at inf integration of [(e^(sqrt(t)))/sqrt(t)]dt from 0 to infinity the integration part is easy but i want only how to evaluate it thanks
asked by William 
Math: please check
Consider a bowl containing 36 different slips of paper. Ten of the slips of paper each contain one of 16) the digits from the set 0 through 9 and 26 slips each contain one of the 26 letters of the alphabet. If one slip is drawn at random, what is P(odd
asked by Bart 
math
I have this question to work on, and I don't know where to start investigating the answer: The product of any two (whole) numbers each of which leave a remainder of 1 on dividing by 7, also leaves a remainder of 1 on dividing by 7. Why? I THINK that I can
asked by charlie 
hca210
How are health care administrators involved in determining the quality of care provided to patients?
asked by Maria 
Grade 11 health
This is an assignment, and it's a formal letter to parents about what they need to do when preparing their kid's lunch. Can somebody check it, please? I want some changes because it doesn't sound right. School Food Safety and Nutrition Program Dear Parent
asked by AL 87 
English
I forgot to include the following three sentences. Thank you vry much for your help! 10) In this letter emerges the conflict between low class and aristocracy, embodied by the son of Pamela’s mistress. 11) Pamela’s father suggests she should be careful
asked by Franco 
series
hi, could any one explain how to find the interval of convergence of ln(1+x) series ? thanks
asked by William 
4th grade
Who is the Seneca Leader who opposed th sale of any land to settlers in the Big Tree Treaty.
asked by laura 
social studies
What two inventions were developed while building the Erie Canal.
asked by laura 
Physics
in many cars the passangersiderearview mirror has a warning that reads "objects may be closer than they appear" is the mirror concave or convex? Explain
asked by kike 
Math
True or False square root of 41 is a rational number. Explain
asked by Sam 
Finance
• The acquisition cost is $35,000 paid at the time of installation. • It reduces the wait staff by one person: Figure $10 per hour, or 2020 hours per year + 18% benefits. • Money costs are 7% • The system may become obsolete in three years.
asked by Anonymous 
social studies
Name two inventions that were developed while building the Erie Canal?
asked by laura 
human resources
The way a company accounts for human resources is an example of which of the following financial statement limitations?
asked by Diedra 
Stats
You are to imagine that you are part of a select marketing group. This group is to consider the Colorado City Convention and Vistitors Bureau survey of 25 hotels. The survey is concerned with the current availability of rooms. They are as follows: 90,
asked by Jennifer 
biology
Can someone please help me with this question? Thanks! What organic molecules make up the structure that surrounds the DNA molecule?
asked by Lydia 
statistics
2. The new Twinkle bulb has a standard deviation hours. A random sample of 77 light bulbs is selected from inventory. The sample mean was found to be 492 hours. a. Find the margin of error E for a 90% confidence interval. Round your answer to the nearest
asked by stefanie 
algebra 2 honors math
what is the inverse of the function f(x)=2x2+2?
asked by deja 
science
what causes our floods?
asked by Disha 
English
Thank you very much for helping me. Can you please check these last two sentences, please? 1)Pamela’s father believes that a girl’s beauty should be evaluated on the basis of virtue and goodness . It should therefore not be confused with vanity or
asked by Franco 
trig
Please help me! SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Verify that each equation is an identity. (sec α + tan α)^2 = 1 + sin α/1  sin α
asked by Lilli 
algebra again
How can you mathematically prove that two lines are perpendicular?
asked by Anonymous 
algebra
Two questions actually. Please only respond with stepbystep answers. Feel free to change the numbers, I just need to know how to do it... 1.) Factor Completely: 4a^2 + 81  36a 2.) In a right triangle, find the length of the side not given. b= 2 c= sqrt.
asked by Jenny 
machanics
can u tell me what formula i should be using to answer this question? If a stone falls past a bird on a ledge moving at 4 m/s, how fast will the stone be movingjust before it hits the ground below 9 seconds later? A. 92.2 m/s B. 48.2 m/s C. 352.8 m/s D. 36
asked by me 
Chemistry
If you dissolve 30.0 g of HF in 100mL of water, what is the concentration of H+ ions in this solution? (Can you figure out what the H+ concentration would be using the Ka value?) Ka=6.3*10^4
asked by Lucy 
grammar
why are great numbers of students choosing to pursue their college degrees using their homw computers. Benjamin Franklin Said; A penny saved is a penny earned". This principle applies to the american and foreign online student. Today students choose to
asked by kelly 
Social Studies
I'm doing an ABC book for Medieval terms, and I have to draw a picture for each term. What could I draw for the Orthodox Church?
asked by lea 
trig
Perform the indicated operation and simplify tan^2(theta)3sin(theta)tan(theta)sec(theta)
asked by Stacey Graham 
Chemistry
An unknown gas has a density of 2.36g/L at 298K and 110 kPa. Calculate its molar mass.
asked by Amy 
psychology
all of the following are true of gestalt therapy except
asked by patrick 
Math: please check
There are 30 fish in a pond. We know that 13 of these fish are males, 4 of these males are salmon, and there are 8 salmon in the pond. What is the probability that a randomly chosen fish is a salmon, given that it is a male? I think they are just asking
asked by Bart 
Math
Write an equivalent fraction for 3/9 and multiply or divide the numerator and the denominator by the same number
asked by Elijah 
10th grade
2y^2*3xy^3 divided by 3x^2y^4
asked by Shay Brown 
trig
Use identities to find indicated values tan (theta)= (12/5), pi
asked by Stacey Graham 
English
I wonder if you could check the following questions and help me rephrase a few more sentences I’m not sure of. Thanks a lot in advance! 1) What historical period did the English Renaissance cover and what was it characterized by? Explain its (?)
asked by Franco 
algebra
write an equation of the line containing the given point and parrallel to the given line (6,4)8x3y=2
asked by delores 
math
one hundred feet directly overhead, a plane and a dirigible start flying due east. If the plane travels three times faster than the dirigible, what is the greatest angle of sight between the two vehicles from your position? Assume the plane passes from
asked by Yen 
Chemistry
How do you solve for the experimental pKa when doing a titration?
asked by Andrew 
School Lunches
I'm writing a letter to parents about their child's lunch. What can you mention in a "nofood sharing" policy, with the reasons why?
asked by AL 87 
calculus
At what point on the parabola y = 1x^2 does the tangent have the property that it cuts from the first quadrant a triangle of minimum area? Find the minimum area.
asked by Brown 
Chemistry
"Calculate the pH of NaCl". I know that NaCl is neutral...but I don't know how to show that it is neutral. The ka value for the Cl ion is "very large", so what do I do?
asked by Stuck 
marketing
what is the process of reducing consumer demand for a product to a level that the firm can reasonably supply? what form of marketing is this?
asked by tina aklin 
calculus
If f''(x)=4sin2x, f(0)=0 and f'(0)=2, find the value of f(pi/4).
asked by skylor 
calculus
Let g(x)= integraton (top 3x, bottom 2) e^t^4 dt. Find the value of g'(0).
asked by Daniel 
statistics
Compare the two sets and describe what you see. 1st set: 57 61 57 57 58 57 61 2nd set: 61 52 69 64 46 54 47
asked by Faith 
life science
how have case studies been used to help develop our understanding of how the brain works?
asked by alice 
Anthro Gr.11
how does culture influence your behaviour. provide examples.
asked by nini 
CHEMISTRY
Complete the following nuclear reactions, which have been used to synthesize elements. This is one of the problems ^238_92U + ^12_6C > __?__ + 6 ^1_0n What I am confused about is the 6 in front of the neutron. Do I multiply it by the 1 and the 0? So
asked by Anonymous 
Chemistry
Is Lithium Thionyl Chloride a battery or it it a fuel cell
asked by Laverne 
algebra
what is the solution of the following linear system? 4x  y = 5 12x  3y = 15 a) (2,1) b) none c) (3,2) d) infinite number of solutions
asked by kid 
college algebra
help solve 8=2^5x * 4^x^2 logarithms
asked by Cindy 
math analysis
how do you solve sinx=cosx??
asked by Itzel 
college algebra
help solve 8=2^5x * 4^x^2 logarithms eight equals 2 to the 5x times 4 to the x squared in case I didn't write it correctly.
asked by Cindy 
Math
Please solve the equation for x: 8e^3x=24
asked by Joe Schmo 
Math
Multiply and Simplify: Can you please show me the steps on how you get the answer. Thank You 2/4n+6 times n^2+2n3/n+1
asked by Lauren 
Math
Divide and Simplify: y^225/7 divided by 7y+35/49
asked by Lauren 
math
write a equivalent fraction of 3/9 and multiply or divide the numerator or denominator by the same number
asked by Elijah 
calculus
pleaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaasw help can you pleaaaaase help me find the area between y=cos(4x) and y=1cos(4x) 0
asked by aymal 
English
Can you help me improve my last questions? Thank you very much for your invaluable help. Anna answered one of them.
asked by Franco 
art
Summarize the use of space of Place de l’Europe on a Rainy Day in 150 to 200 words
asked by Anonymous 
Science
What are floods?
asked by Disha 
Trig
Use identities to find indicated values tan (theta)= (12/5), pi
asked by Stacey grahaM 
Math
3/y+2 over 7/y4 can u please show me the steps on how you got the answer. Thank You
asked by Scott 
people
Why don't you have Juan Seguin!!!!!!!!!
asked by Max 
people
Why don't you have Juan Seguin??????????
asked by Max 
STATISTICS
BECAUSE OF THE ASSUMPTION THAT THE POPULATION VARIANCES ARE EQUAL, WHEN YOU DO A ANALYSIS OF VARIANCE.
asked by WAYMOND 
Statistics
I'm confused.Can someone tell me if I have done this correct.I'm trying to get the average using a weighted scale: TOTAL GRADES: WEIGHT 90% 5% 100% 15% 95% 15% 90% 5% 94.5% 60% I multiplied the total grade by the percent, then added the percent. But I get
asked by Sue 
stats
H0: pi=.60, alpha:.05 x:56 n:80 I really don't get where Alpha is involved, pls help. Thanks
asked by barty 
english
does this sentence make sesse. he ate a apple.
asked by Emma 
statistics
H0: pi=.60, alpha:.05 x:56 n:80 I really don't get where Alpha is involved, pls help. Thanks
asked by barty 
Number Theory
How Do you expand (4x+3y+3z)^6?
asked by Tay 
EnglishEdit
Could someone please edit this for me, and point out all grammatical errors. Thank you very much in return My assignment is connected to this poem and is down below. I made some changes as well. :) Mr. Henry Axhelm Math Period 2, Room 107 I teach five
asked by Sara 
Contemporary World History
Why did it take until 1932 for Saudi Arabia to obtain its independence?
asked by Charles 
math
is 67% a rational or irrational number
asked by nikki 
Chemistry
is lithium thionyl chloride batteries rechargeable or disposable
asked by Anonymous 
College Mathematics
what is the solution for this problem,create three sets, set A, B, and set C by going through the items in your wallet or purse. Set A will be a list of all of these items. Create Set B, from the items in Set A that you think are essential. Create Set C,
asked by Terrie 
5th grade
explain how you know that 5.5 is to the right of 5 1/4 on the number line
asked by lynnae 
english
does this sentence makes sens she flied over the mountaintop.
asked by Emma 
earth science
the first manned mission to the moon was
asked by Anonymous 
Algebra
How to simplify: ((m^(2/3))^(1/6)
asked by Anonymous 
chemisty
what is the name of this substance K2Cro4
asked by ann 
geometryPLEASE CHECK AND HELP!!
1. Refer to the following line m: b. Name two rays on m that have endpoint B. d. Find a simpler name for the intersection of rays BA and AC the line m has points a b and c going on across like that on the line would the answer be ba and bc? what would the
asked by jessica 
Math
Divide and Simplify: y^225/7 divided by 7y+35/49
asked by Lauren 
college economics
Suppose there are two goods. The demand for good 1 is q1=abp1+ep2 and the demand for good two is q2=abp2+ep1. a and b are strictly positive, e
asked by Emma 
geometryPLEASE HELP!
In the figure, l is parallel to m, and m( 1) 5 60°. Find each of the following: b. m( 6) l is paralled to m. this is how the numbers are listed 2 1 3 4 6 5 7 8
asked by jessica 
math
In the formula for the volume of a pyramid, the height h is the distance measured along one face of the pyramid to the base. Is this statement false?
asked by heather 
Physics
What is a mirror ( reflective surface and back) made out of?
asked by Emily 
English
1. Are you finished cleaning? 2. Are you finished with cleaning? (Which one is correct?)
asked by rfvv 
English
Happiness: What is happiness? This is what a poet says: Happiness is a butterfly which when pursues is just beyond your grasp... but if you will sit down quietly, may light upon you. This is what I say: Happiness is the crisp autumn breeze Which when
asked by Sara 
logarithms
evaluate each log. Ln e^3 logbase(1/1000) expand each log. logbase5 radical41/43 logbase7 8xy^4/3z^3 logbase5 4(7radicalxy^z)
asked by help! 
social science
article summary on Social Perception and Interpersonal Behavior: On the Selffulfilling Nature of Social Stereotypes
asked by Debbie 
Chemistry
Can somebody explain how to do this? I am stuck. I've tried solving for H+ concentration. I got .00024M and subtracted it from [OH]. Then I solved for pOH and used that to get pH but still got the wrong answer. Somone plz explain this to me.
asked by John 
spanish
what does te gusta mi calor perro mean?
asked by Anonymous 
math
Can someone please help me I can't figure this out Find the center and radius of the circle. (x  4)2 + (y + 6)2 = 16
asked by Alex