Questions Asked on
November 29, 2011

Math/ Number sense
Use the numbers shown. Make the sum of the numbers across equal the sum of the number down. 7 5 1 9 3
asked by Harry 
Cal
If the equation of motion of a particle is given by s = A cos(ωt + δ), the particle is said to undergo simple harmonic motion. s'(t) = Aω sin(ωt + δ) When is the velocity 0? (Use n as the arbitrary integer.) t= _____________ I thought it was 0, but
asked by Nykie 
Chemistry
Kc for the reaction of hydrogen and iodine to produce hydrogen iodide, H2(g)+I2(g)f 2HI(g) is 54.3 at 430C. What will the concentrations be at equilibrium if we start with 0.240M concentrations of both H2 and I2?
asked by mary 
Economics
Harold owns a cranberry bog in which he grows cranberries. Haroldâ€™s farm is a competitive, profitmaximizing firm. As such, Harold much decide (i): how many cranberries to sell. (ii): what price to charge for his cranberries. (iii): what wages to
asked by Keaton 
V/CV OR VC/V PATTERN
SORT EACH SPELLING WORD BY V/VC OR VC/V PATTERN: TYRANT,EQUAL,HUMOR,RECENT,PROFILE,LINEN,CLOSET,STUDENT
asked by RYAN 
calculus
A box of volume 72m^3 with square bottom and no top constructed out of two different materials. The cost of the bottom is $40/m^2 and the cost of the sides is $30/m^2. Find the dimensions of the box that minimize the total cost. How do I set up the
asked by Samatha 
calculus
If a snowball melts so that its surface area decreases at a rate of 3 cm2/min, find the rate at which the diameter decreases when the diameter is 9 cm. (Give your answer correct to 4 decimal places.)
asked by nate 
Organic Chemistry
Some 2methyl2butene may be produced in the reaction as a byproduct. Give a mechanism for its production.
asked by Ariel 
Cedar High school
A compound is found to have 56.4% potassium, 8.7% carbon, and 34.9% oxygen. What is the empirical formula?
asked by Angel 
Economics
Sandra purchases 5 pounds of coffee and 10 gallons of milk per month when the price of coffee is $10 per pound. She purchases 6 pounds of coffee and 12 gallons of milk per month when the price of coffee is $8 per pound. Sandraâ€™s crossprice
asked by Will 
physics
A 2.0 g bullet leaves the barrel of a gun at a speed of 260 m/s. (a) Find its kinetic energy. J (b) Find the average force exerted by the expanding gases on the bullet as the bullet moves the length of the 43 cm long barrel. N
asked by Anonymous 
chemistry
In a hydrocarbonbased combustion reaction, what two molecules are most likely to be products? A. carbon dioxide and water B. sulfur dioxide and zinc oxide C. sulfur dioxide and cyclopentane D. carbon monoxide and hydroxide
asked by ashley 
advanced function
pls. help: prove the identity sin2x+sin2y=2sin(x+y)cos(xy)
asked by justme 
math
suppose a population has a doubling time of 15 years. By what factor will it grow in 30 years?
asked by issa 
apush
how did each of the following encourage social reform: second great awakening, industrialization, nostalgia for the past?
asked by kristen 
physics
In a European country a bathroom scale displays its reading in kilograms. When a man stands on this scale, it reads 90.4 kg. When he pulls down on a chinup bar installed over the scale, the reading decreases to 79.5 kg. What is the magnitude of the force
asked by darren 
Chemistry help!!
Consider the titration of the weak acid HA with NaOH. At what fraction of Ve does pH = pKa  1? At what fraction of Ve does pH = pKa + 1? Calculate the pH at these two points plus Vb = 0, 1/2Ve, Ve and 1.2Ve, if 100 mL of 0.100 M anilinium bromide (pKa =
asked by Remy 
Chemistry
Suppose you are given the following experimentally observed facts regarding the reactions of silver ion. (a) Ag^+ reacts with Cl^ to give white AgCl (s) (b) Ag^+ reacts with ammonia to give a quite stable complex ion, Ag(NH3)2^+ (c) a black suspension of
asked by martini 
Calculus
Find the area under the curve y=5(cosx) and above y=5(sinx) for 0
asked by Sully 
6th grade math
write each rate as a unit rate. Q: 6 eggs for 3 people
asked by Kate 
english
1. What is Lynne Cox's perspective in this passage from Swimming to Antarctica? If you continue swimming, you're going to cool down even more. Remember how hard you shivered last time? Remember how much work it was? Remember how uncomfortable you were?
asked by tayler 
lititure
what are the cause and effect of these things in brave new world? In fiction, as in life, events have causes and, in turn, become causes of subsequent events. Here are some events from Brave New World. Write a sentence that describes a major cause of each
asked by amber 
Physics
In a fireworks display a 3 kg body moving at 4 km/h due north explodes into three equal pieces: A, at 4 km/h east; B, at 5 km/h 37 degrees south of west; and C, at 15 km/h due north. After the explosion, what is the total momentum of all the pieces?
asked by Nhii 
thermodynamics
A scuba tank contains 1.5 kg. of air. The air in the tank is initially at 15 degree celcius. The tank is left near an engine exhaust line, and the tank's pressure doubles. Determine the final temperature, change of internal energy, change of enthalpy, and
asked by hermie 
algebra
The distance the bicycle travels and the time taken are expressed by the formula d(t)=t^22t, there d(t) is in miles and t in hours. Find the time taken by the bicycle to cover a distance of 63 miles.
asked by ls 
chemistry
What is the molecular geometry for SH2? 1. Bent 2. Trigonal planar 3. Tetrahedral 4. Liner
asked by katie 
Math(module 4 Calculus)
(minimum commuting time) A lighthouse lies 2 miles offshore directly across from point A of a straight coastline. The lighthouse keeper lives 5 miles down the coast from point A.What is the minimum time it will take the lighthouse keeper to commute to
asked by Furzeen 
physics
A water balloon was dropped from a high window and struck its target 1.1 seconds later. If the balloon left the person’s hand at –5 meters/sec, what was its velocity on impact?
asked by sara 
history
what is the effects of the seven years war
asked by Anonymous 
world history
Need Thesis help for essay on....this is the question being answered: Prompt: Hinduism, Confucianism and Buddhism are three of the world’s great belief systems. Compare and contrast their impact on the societies that embraced them. I started this thesis,
asked by Fort 
Math
Ragu ran the first 3 miles of a 5 mile race in 24 minutes. What percent of the race has he run? Please help me
asked by Lisa 
Physics help please
While visiting Planet Physics, you toss a rock straight up at 13.6 m/s and catch it 3.50 s later. While you visit the surface, your cruise ship orbits at an altitude equal to the planet's radius every 340.0 minutes. What is the mass (in kg) of the planet?
asked by Me 
physics
A merrygoround accelerating uniformly from rest achieves its operating speed of 3.4 rpm in 2 revolutions. What is the magnitude of the angular acceleration?
asked by WyzAnt 
Calc
Find the value of (f o g)' at the given value of x. f(u)= u/u^21 u=g(x)=3x^2+x+3 x=0 is it a. 5/32 b. 13/32 c. 1/8 d. 5/32
asked by Gretchen 
chemistry
Choose the term that best describes the following chemical reaction: C10H8 + 12 O2 10 CO2 + 4 H2O A. synthesis B. combustion C. electrolytic D. decomposition
asked by ashley 
Chemistry
Ethylene glycol has a specific heat of 0.578 cal/(g×°C). If 23.2 g of ethylene glycol absorbs 75.6 cal of heat energy, what will the temperature increase be?
asked by Chemistry Chick 
STATISTICS HELP PLEASE
A total of 23 High School students were admitted to State University. Of those students, 7 were offered athletic scholarships. The school’s guidance counselor looked at their composite ACT scores (given in the table below), wondering if State U might
asked by jabrony 
physics
A piano string having a mass per unit length equal to 5.10 103 kg/m is under a tension of 1,500 N. Find the speed with which a wave travels on this string.
asked by jim 
physics
Before beginning a long trip on a hot day, a driver inflates an automobile tire to a gauge pressure of 2.20 atm at 300 K. At the end of the trip, the gauge pressure has increased to 2.70 atm.
asked by Anonymous 
Calc 3
Find the volume of the wedgeshaped region contained in the cylinder x^2 + y^2 = 1 and bounded above by the plane z = x and below by the xyplane. The picture is a cylinder with a diagonal plane through it creating a wedge. Thanks! ;)
asked by Alyssa 
3rd grade math
How can you use mental math to multiply 800 x 5?
asked by Alex 
calculus
Annual sales of bottled water in the country in the period 19932003 could be approximated by the function below, where t is time in years since 1990. Were sales of bottled water accelerating or decelerating in 2000? How fast? R(t) = 10 t**2 + 100 t + 2400
asked by LC 
Chemistry
a solution is made by combining 10.0 ml of 17.5 M acetic acid with 5.54 g of sodium acetate and diluting to a total volume of 1.50 L. a)calculate the pH of the solution. b) how many grams and milliliters of 14.6 M potassium hydroxide needs to be added so
asked by Amanda 
algebra
slope=2/5,{10, 3} is on the line find the yintercept: y= mx + b ___ = {} ____ +b
asked by daneille 
university of phoenix
4.Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and standard deviation of 4. Do not use webcalculator to answer the following questions. Instead, you need to use the Z
asked by shirley 
Physics
An early method of measuring the speed of light makes use of a rotating slotted wheel. A beam of light passes through one of the slots at the outside edge of the wheel, travels to a distant mirror, and returns to the wheel just in time to pass through the
asked by Anonymous 
statistics
5. The table below shows Psychology exam scores, Statistics Exam scores, and IQ scores for a random sample of students. What can you observe in the relationship between IQ and psychology, psychology and statistics, and IQ and statistics? Using a
asked by shirley 
chemistry
What mass of KNO3 in grams would be required to prepare 0.6 liters of a 1.8 M KNO3 solution?
asked by Megan 
chemistry
ZnCl2(aq)+Na2CO3(s)> ZnCO3(s)+NaCl (aq) Balance the chemical equation and state solid, liq, gas, aq properly to each compound Ok I have it balanced by 2 NaCl in the second part of the equation But now what is the total ionic and net ionic equations. I
asked by Ashley 
3rd grade math
Marcia said that if she estimates 73 x7, the product will be less than the exact answer. Is she correct? Explain.
asked by Alex 
Geometry
A hexagon has exterior angle measures of 59, 70, 68, 58, and 53. What is the measure of the sixth interior angle?
asked by Diamond 
Economics
Suppose the government has imposed a price floor on the market for soybeans. Which of the following events could transform the price floor from one that is not binding into one that is binding? A. Farmers use improved, draughtresistant seeds, which lowers
asked by Will 
physics
A raft is 4.5 wide and 6.3 long. When a horse is loaded onto the raft, it sinks 2.7 deeper into the water. What is the weight of the horse?
asked by Kami 
trig
For the following expression, find the value of y that corresponds to each value of x, then write your results as ordered pairs (x,y). y=7cos(xpi/6) for x=pi/6, pi/3, 2pi/3, pi, 7pi/6
asked by katie 
physics
Suppose a rocket launches with an acceleration of 39 m/s2. What is the apparent weight of an 90 kg astronaut aboard this rocket?
asked by christen 
Economics
The price received by sellers in a market will decrease if the government Answer A. imposes a binding price floor in that market. B. decreases a binding price ceiling in that market. C. decreases a tax on the good sold in that market. D. increases a
asked by Will 
Physics
A 340 g bird flying along at 6.0 m/s sees a 14 g insect heading straight toward it with a speed of 30 m/s. The bird opens its mouth wide and enjoys a nice lunch. What is the bird's speed immediately after swallowing?
asked by Danny 
Sciencechemistry
A compound is found to have 56.4% potassium, 8.7% carbon, and 34.9% oxygen. What is the empirical formula?
asked by Angel 
USI
Write limits of integration for the integral \int_W f(x,y,z)\,dV, where W is the quarter cylinder shown, if the length of the cylinder is 1 and its radius is 1.
asked by Nick 
Chemistry
Consider the reversible reaction: A(g)2B(g)At equilibrium, the concentration of A is 0.381 M and that of B is 0.154 M. What is the value of the equilibrium constant, Keq?
asked by Chemistry Chick 
physics
Estimate the pressure exerted on the floor by a 75 kg store clerk standing momentarily on a single heel of their shoe, where the heel area = 6 cm square?
asked by ted 
Maths
A particle is moving along the curve y=4sqrt(4x+1) . As the particle passes through the point (2,12), its xcoordinate increases at a rate of 2 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
asked by S.P 
math
Suppose that fifteen observations are chosen at random from the pdf f_Y(y) = 3y^2, 0
asked by Jen 
chemistry
What volume of H2 (g) (at 750. mm Hg and 25 C) is produced from 50.0 mL of 0.214 M H2SO4 and 0.300 g of Al?
asked by juan 
Economics
A longrun supply curve is flatter than a shortrun supply curve because A. firms can enter and exit a market more easily in the long run than in the short run. B. longrun supply curves are sometimes downward sloping. C. competitive firms have more
asked by Bob 
Calculus
FInd the area of the region between y=x^(1/2) and y=x^(1/5) for 0
asked by Buffy 
phsyics HELP PLEASE
A 40.6kg crate rests on a horizontal floor, and a 69.1kg person is standing on the crate. Determine the magnitude of the normal force that (a) the floor exerts on the crate and (b) the crate exerts on the person.
asked by darren 
Math Trig please help!
A tire with a diameter of 100 cm rotates 20 times in 3 seconds. a) determine the angular velocity b) how far the tire has travelled? c) what is the speed in km/h?
asked by linda 
trig
Solve the equation for exact solutions over the interval [0, 2pi]. 4 cotx+2=2
asked by me 
PROBLEM SOLVING IN MATHEMATICS
a landscaper bought same decorative cement blocks from a landscaping supplier. the supplier charged 5% sales tax and the total came to $315. without the tax, the landscaper could have bought 6 more blocks for the same total cost. how many blocks did the
asked by alya ASAP 
Economics
Suppose that some firms in a competitive industry are earning zero economic profits, while others are experiencing losses. All else equal, in the long run, we would expect the number of firms in the industry to A. increase. B. decrease. C. remain the same.
asked by Bob 
chemistry
how would you prepare 300 ml of a 10% CaCl2 solution (w/w)?
asked by erin 
biotech
how would you prepare 300 ml of a 10% CaCl2 solution (w/w)?
asked by erin 
algebra
When Mr. J. Raff took his two children to the zoo,their tickets cost $8.75. The next family in line was Mrs. Ella Fant with Grandpa and the five Fant kids. Their tickets cost a total of $19.75. How much does the zoo charge for each adult and for each
asked by Linda 
history
What is the symbol of christianity
asked by Anonymous 
physics
A 2.9 × 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 16.0 with the horizontal. An average frictional force of 4.2×103 N impedes the car’s motion so that the car’s speed at the bottom of the driveway is 4.6
asked by Matt 
Chemistry
At 20 degrees C ethanol has a density of 0.789 g/ml and H2O has a density of 1.0 g/ml. What is the % by volume of ethanol of a solution made by adding 50g of ethanol with 50g of H2O? Tutor Answer: Use density = mass x volume to convert 50 g ethanol to
asked by Shelly 
English
Which of the following publications are both listed under the "Magazines" results? A. Astronomy and Science B. Odyssey and Natural History C. Science News and Earth Island D. The Economist and American Scientist
asked by Leo 
Physics help please!
While visiting Planet Physics, you toss a rock straight up at 13.6 m/s and catch it 3.50 s later. While you visit the surface, your cruise ship orbits at an altitude equal to the planet's radius every 340.0 minutes. What is the radius (in m) of the planet?
asked by ... 
Math (linear approximation)
Find a linear approximation of the function f(x)=(1+x)^(1/4) at a=1, and use it to approximate the numbers (.95)^(1/4) and (1.1)^(1/4). Round your answers to the nearest thousandth Cheers in advance!
asked by Alison 
3rd Grade math
What multiplication fact can be found by using the arrays of 2x9 and 5x9?
asked by Justin 
Math
This is what my paper said(or close enough) Mike is measuring his baseball bat with a 1/8 inch ruler What is the precison using this measurement using this ruler______(i answered 1/8 inch, is it correct?) What is the greatest possible error?_________ (this
asked by Anonymous 
Economics
Which of the following would not interfere with market equilibria? A. a minimum wage B. a rent control C. a nonbinding price floor D. a binding price ceiling
asked by Will 
maths
A rug covers 1/4 of the floor. The area of the rug 10ft . What is the area of the floor? my answer is 2 1/2 ft,am i right if not please explain?
asked by miki 
Future
What do I have to do to make it to Yale like you see I have a best friends she all perfect and all. She have awards over 70 (no joke), have a scholorship (for chruch), and she is a good writer and a artist, plus she gets VERY good grades. She wants to go
asked by Laruen 
Physics
A 400g block of copper at a temperature of 85°C is dropped into 300 g of water at 33°C. The water is contained in a 250g glass container. What is the final temperature of the mixture?
asked by Seth 
english
plese any help will be appreciated 1. What is Lynne Cox's perspective in this passage from Swimming to Antarctica? If you continue swimming, you're going to cool down even more. Remember how hard you shivered last time? Remember how much work it was?
asked by tayler 
chem
mix 35.50 mL of a 0.201 M solution of K2CrO4 with 35.50 mL of a 0.201 M solution of AgNO3, what mass of solid will form?
asked by darren 
english
Hi, I need help fixing my grammar in the following: I'm going to tell you a story about a rabbit, and a turtle running a race. One sunny day the rabbit was running fast, and hopping around quickly showing off as usual; you know how rabbits are but the slow
asked by zuz 
4th gr math
Algebra question....Find the missing number. Tell which property can help you. _______ x 9=0. The answer is 0, I'm having trouble with the second question.
asked by Miya 
English
Please check my last post as well. I typed a reply. Moreover if I were to come up with an Original and creative essay title. What should it be. For the topic Banning Cellphones while driving. 1. Who is to blame? 2. Blame the cellphone 3. I just wanted to
asked by Hm 
Economics
How large would a corrective tax need to be to move this market from the equilibrium outcome to the sociallyoptimal outcome? A. An amount equal to P' minus P. B. An amount equal to P'. C. An amount equal to P. D. An amount equal to the external cost.
asked by John 
chemistry
Which one of the following is a combustion reaction? A. CH4 + 2 O2 CO2 + 2 H2O B. HBr + NaOH NaBr + H2O C. Xe (aq) + H2O(l) HXe(aq) + OH (aq) D. NaCl (aq) + AgNO3 (aq) NaNO3 (aq) + AgCl (s)
asked by ashley 
math
the consumer price index is increasing at a rate of 9% per year. what is its doubling time?
asked by issa 
math
in a class of 24 students, 13 students are girls. What fraction of the students are boys?
asked by Anonymous 
chemistry
balanced equation: HC2H3O2 + NaOH > What is the mole ratio of these two substances?
asked by science 
statistics
Find a z value to the right of the mean so that 74.5% of the distribution lies to the left of it.
asked by Z 
Economics
Supply is Demand is Scenario A elastic elastic Scenario B elastic inelastic Scenario C inelastic elastic Scenario D inelastic inelastic Which scenario describes the market for oil in the long run? A. A B. B C. C D. D
asked by Will 
Thermodynamics
In one of the boiler rooms in an Industrial Plant, the barometer reads 750 mm Hg. Determine the absolute pressures in Kpa of the following pressure measuring instrument readings: pressure gauges reads 46 psi and 76 in. Hg; and compound gauges registers 13
asked by hermie 
Physics
If we examine a ball in free fall, we find that the momentum of the ball is not constant. This is not a violation of the law of conservation of momentum because A) the force of gravity acts on the ball. B) the ball experiences an external force. C) the
asked by Crystal 
Chemistry
Plz help me balance this chemical eqn H2C2O4.2H2O+KMnO4 >
asked by Roseline 
chemisty
give the conjugate base for HNO2
asked by melanie 
Math
The equation y=2x+7 represents a linear relationship that is nonproportional. What changes could I make to the equation to make it proportional? Thanks
asked by Tim 
maths
Solve the following differential equation: (1 + x)*(dy/dx) = y where y is a funtion of X solve by the following: A)series expansion B) elemantary method please show working
asked by Rikki 
chem
What volume of a 8.50M Na2CO3 solution would be required to prepare 220.00mL of a 8.20%w/v Na2CO3 solution?
asked by darren 
English
I wonder if your science experts can be help find material (general information, word lists) in English which is needed to talk about biodiversity in water and waterways and microbiological analysis of water. This would be for biologists who are familiar
asked by Henry2 
Math
For the following equation, state the value of the discriminant and then describe the nature of the solutions. 9x^2+6x2=0 what is the value of the discriminant? Which one of the statements below is correct? A) the equation has two imaginary solutions. B)
asked by Allison Anderson 
algebra
Jane is taking a class and asks you to help her figure out what her last grade must be in the class to get a 85 in the class. She tells you the following calculation is used to find your final grade: w2d2 x is her last score which has not been taken.
asked by Jennifer 
college physics
a railway freightbcar whose mass is 15 000kg & speed is 2.4m/s runs into a stationary freight car whose mass is 25 000kg. the 2 cars couple & roll off the track. what is the speed if the 2 cars as tey move together down the track? and how much kinetic
asked by barbara 
physics
Running at 2.0 m/s a 45.0 kg person collides with a 90.0 kg person who is traveling at 7.0 m/s in the other direction. Upon collision, the 90 kg person continues to travel forward at 1.0 m/s. How fast is the 45 kg person knocked backwards?
asked by Jane 
Chemistry
a sample of gas has the pressure of 1120 mmhg and volume of 2.00 L. if the pressure is changed to 0.155 atm calculate the new volume
asked by erica 
physics please help!!
You are looking into the headlights of a distant vehicle on an autoroute in France. The driver has shown his resistance to the Europeanization of Europe by resolutely continuing to use yellow headlights (wavelength 550. nm). a) What is the theoretical
asked by archi 
Physics
Two bullets have masses of 2.4 g and 5.2 g, respectively. Each is ﬁred with a speed of 37.0 m/s. a) What is the kinetic energy of the ﬁrst bullet? b) What is the kinetic energy of the second bullet? I initially used KE=1/2MV^2 and got 1642.8 J, but got
asked by Elle 
English
1. You can link the website address on your website. 2. I will paste the link on the messanger, and will send you the address. (Are the sentences above grammatical? Would you check them? Thank you.)
asked by rfvv 
Chemistry
The osmotic pressure of a liquid at 320 K is 145 kPa. Calculate the freezing point of the solution.
asked by David 
English
I urgently need you check these statements. Thank you very much. 1) Unfortunately the deadline to apply to our national agency for a preliminary visit for our project (to define the topic of our project) was 18 November. 2) What do you think we can do? The
asked by Henry2 
CAlculus
The graph of the derivative, f '(x), is given. Determine the xcoordinates of all points of inflection of f(x), if any. (Assume that f(x) is defined and continuous everywhere in [3, 3]. If there are more answer blanks than inflection points, enter NONE in
asked by LC 
Social Studies
according to the buddha how can people escape worldly suffering IS IT KARMA
asked by ADAM 
business
For dollars spent on advertising  What dollars of sales produced?
asked by trish 
Math
Divide and simplify 2w16/35 divide by w8/77w
asked by Allison Anderson 
calculus
Evaluate the integral ((6x+7)/(x^(2)8x+25))dx. Please and thank you.
asked by Bianca 
Math
How do you find the total earnings when given the salary, commission rate, and sales? EX question: $1,ooo plus 6% on sales of 2,000
asked by Alexis 
English
Okay so I have decided to write about "Banning the use of telephones while driving(including calls/texts)" This is my last shot at the final to earn a B in this class and possibly an A. My opinion on this subject is that I believe that there should be a
asked by Hm 
Trigonometry
Use the properties of logarithms and trigonometric identities to verify the identity. lncot x = lncos x  lnsin x I have no idea where to begin with this one... your help is appreciated!
asked by Lindsey 
chemistry hw help please ASAP
if 25.2 g of aluminum (AW=27.0) are mixed with 125 g of sulfuric acid(MM=98.1)then how many grams of aluminum sulfate will be produced? 2Al+ 3 H2SO4 > 3H2 + Al2(SO4)3
asked by ally 
math
show that the sum of four consecutive whole numbers is divisible by 2
asked by kendra 
math
a rectangular board measures 2ft 2in by 7in 3ft what is the perimeter around the board?
asked by lashunda 
English
Thank you very much for your suggestion. What do you think of the book "Marine Biology: Function, Biodiversity, Ecology, by J.S. Levinton? Could you also suggest a book which could help us get to know the relevant English terminology?
asked by Henry2 
statistics
Suppose that people's heights (in centimeters) are normally distributed, with a mean of 165 and a standard deviation of 6. We find the heights of 80 people. (a) How many would you expect to be between 159 and 171 cm tall (b) How many would you expect to be
asked by gertrude 
social studies, Anthro psych , and soc
In the movie Shawshank redemption, how did the prison in the film try to rehabilitate its inmates, was it successful? Provide 3 examples of ways in which the prison guards enforced compliance to prison rules, were the enforcements necessary or effective?
asked by Annie 
physical science
is it possible for people of different masses to have the same power output? Explain
asked by kennedy 
physics
Approximately how far will the people have to travel to move the truck 1.5m if Truck force is 4500N and people are 1200N?
asked by Dana 
Algebra
3y24/14 divided by y8/4y
asked by Kelly 
Math help please
Thank you for the answer K Can you please explain? Observe the pattern of letters ACCCEEEEEGGGGGGG. This pattern continues to repeat beginning with the letter A. What will be the 170th letter?
asked by TO: Anonymous 
COMPUTER HARDWARE MANAGEMENT
The most common RAM package for today's PCs is the: A) SIP B) RDM C) DIMM D)SIMM IS C OR D ,I AM NOT SURE?THANK YOU:)
asked by vedrana 
math
the longest side of a triangle measures 2 and the shortest side measures 1. what cannot be the measurement of the angle between them? a30 degrees b60degrees c70 degrees d90degrees
asked by iris 
calculus
Find the derivative. f(x)=ln(8e^x) I got e^x/8e^x but it was wrong. WHAT DID I DOOOO?!
asked by kim 
math
roger took off at 8am driving 45mph. bill went after him 2 hours later and caught up with him at 4pm. how fast did bill drive?
asked by iris 
physics
What is the total force on the bottom of a swimming pool 20.5 m by 8.0 m whose uniform depth is 2.1 m?
asked by bill 
Econ
If an oil pipeline shuts down in Alaska, how does that affect the market for gasoline? demand increase, decrease or supply increase, decrease
asked by Econ help please another ques 
English
1)Which of the following sets of Dewey Decimal call numbers is in the correct order? A. 100.1 BLU, 010.1 ABR, 004.15 KWA, 100.01 PRO B. 004.15 KWA, 010.1 ABR, 100.01 PRO, 100.1 BLU C. 010.1 ABR, 004.15 KWA, 100.01 PRO, 100.1 BLU D. 100.01 PRO, 100.1 BLU,
asked by Leo 
chemistry
How many moles of NaOH are in 23.5 mL of a 1.50 M solution? 1. 0.0353 moles 2. 35.26 moles 3. 16.7 moles 4. 0.0235 moles
asked by katie 
chemistry
What volume of a 7.00 M solution of Ca(OH)2 is needed to neutralize 37.2 mL of a 3 M solution of nitric acid? 1. 15.9 mL 2. 37.2 mL 3. 7.97 mL 4. 24.2 mL
asked by katie 
chemistry
Which of the following sets of solute and solvents will make a homogeneous solution? (naphthalene is a nonpolar organic molecule) 1. Water and benzene 2. Benzene and ammonium nitrate 3. Benzene and naphthalene 4. Water and naphthalene
asked by katie 
English language
what could be an example of something that is urgent but is not important? and something that is important but not urgent? these questions refer to daily actions or well any actions, i have absolutely no idea how to answer that. Sure doesn't urgent and
asked by Caroline 
university of phoenix
T test for independent groups and dependent groups (Twogroup designs) 1. An LU professor is interested in whether there is a difference between undergraduate students and graduate students in the amount of time spent praying each day. The professor
asked by Shirl 
Math(module 4 Calculus)
(Graphing Calculator)Sketch the graph of the function f(x)= 2x^37x^227x18/x^2+5
asked by Furzeen 
Math
3^2*3^3=3^5 7*0.1=7/10 5^2*5^3=5^5 3*0.1=3/10 13^2*13^3=13^5 4*0.1=4/10 For each set of special cases, write a general pattern. HELP I DON'T GET THIS!!
asked by Maryam 
spanish
what does, los estudiantes hablar mucho para la clase de ciancias naturales, mean?
asked by HA 
medical billing and coding
What codes do i use for these? 1. Twoyearold patient ingested an unknown quantity of mother,s Envoid.
asked by Yolanda 
math  please help!!
The number of immigrants living in a certan country with a large population makes up 20 percent of the population. in a random sample poll of 100 people what is the expected number of immigrants to be polled? (using bionomial distribution) thanks!
asked by linda 
Physics
Write the Balmer formular and explain each tearm
asked by Bilal 
Calculus
I will be using != for not equal The cancellation law for real numbers is quite obvious: if a,b, and c != 0 are real numbers for which ac = bc then a = b. It is natural to ask if the cancellation law holds for three dimensional vectors. If U x W = V x W, U
asked by Ryan 
Math
A box contains 1 white bow, 2 yellow bows, 3 red bows, and 6 green bows. The bows are all the same size and shape. If Patricia reaches in the box and pulls out a bow without looking, what is the probability that it will be yellow? A.1/12 B.2/10 C.1/6 D.1/4
asked by Tony 
English
I urgently need you to check these sentences. Thank you very much. 1) Think about a TV programme among the ones analyzed in class. Briefly describe what it was about, what was happening in it and if you would recommend it. 2) Give a brief definition of the
asked by Henry2 
math
Convert 3214 (5) to base 10
asked by mary lou 
Physics
Note: One horsepower is equal to 746 watts. An automobile engine delivers 53.1 hp. How much time will it take for the engine to do 8.43 × 10 5J of work? Answer in units of s
asked by Kethe 
COMPUTER HARDWARE MANAGEMENT
AMD is a: A)manufacturer of CPUs for PCs b)manufacturer of PC hard drive c)type of slot a PC motherboard d)type of memory IS A RIGHT ANSWER?THANK YOU:)
asked by vedrana 
milford
Suppose that a man throws a ball from the front of a train that is moving at 100 km/hr. If he throws the ball forward at 10 km/hr, what is the speed apparent to the man?
asked by sue 
precalc/trig
Find the trigonometric form of the number. (Round any angles to two decimal places.) −8 − i
asked by Alex 
Social Studies
In what city did Rosa Parks defy the rules of segregation?
asked by Lance 
chemistry
For the balanced reaction HCl(aq) + NaOH(aq) ? H2O(l) + NaCl(aq), how many moles of H2O could be produced from 25 g HCl? (You have already done this type of question!
asked by valarie 
math
Jim and Joe were running together. Jim's average speed was 400 meters per minute.Jim started running four minutes before Joe. ten minutes after Joe started, he caught up with Jim. What was Joe's average speed?
asked by iris 
Algebra
Solve for x. 4x(x1)5x(x)=3
asked by Kelly 
statistics
Suppose that people's heights (in centimeters) are normally distributed, with a mean of 165 and a standard deviation of 6. We find the heights of 80 people. (a) How many would you expect to be between 159 and 171 cm tall (b) How many would you expect to be
asked by gertrude 
Math
solve for x 4x(x8)5x(x7)=4
asked by Allison Anderson 
Economics
Suppose planting flowering shrubs creates a positive externality equal to $7 per shrub. Further suppose that the local government offers a $7 pershrub subsidy to planters. The number of shrubs that are planted is then A. less than the socially optimal
asked by John 
Math
Ms.Dixon sees more than 119 birds but fewer than 132 birds. How many birds might she have seen?
asked by Sue 
Math
I need help with a math question problem
asked by amber 
math
Jane is taking a class and asks you to help her figure out what her last grade must be in the class to get a 85 in the class. She tells you the following calculation is used to find your final grade: 75+85+90+X  > or = to 85 4 x is her last
asked by Jennifer 
Math
What percent of 126 is 42
asked by Monkey 
Calc
Find the equation of the normal line to the curve y=2x3x^2 at the point (3,33) is it a. x16y+339=0 b. x+20y+339=0 c. x+20y+663=0 d. x16y+663=0
asked by Gretchen 
Math
Please help me. Is there a short cut way to arrive at this answer? Observe the pattern of letters ACCCEEEEEGGGGGGG... This pattern continues to repeat beginning with the letter A. What will be the 170th letter? Thank you
asked by Math help please 
Social Studies
What are the three countries that have influenced Canadian culture and history?
asked by Jenny 
English 7
I need your help you see like... ok here is my topiv sentence for my second paragraph: Rosa Parks wanted people (blacks) to be free and have a better education. and I wrote (for notes to put into sentences)  Blacks were slaves  Most blacks couldn't go
asked by Laruen 
Journal
You see I have this notebook and like I want to use it for to write down journal entries about my middle school and high school life. But I'm writing this to god telling him about my day and list of things to prey to him. Like first I type it then print it
asked by Laruen 
college alg
sqrt 18x to the 5th
asked by Anonymous 
chemistry
What is produced during all combustion reactions? A. ions B. solids C. energy D. nuclear material
asked by ashley 
physics
a hockey puck B resting on a smooth surface is struck by a second puck A which was orginally traveling at 50 m/s. After colliding, the speed of puck A us reduced to 35 m/s and is deflected through an angle a from its orginial velocity of A. Assume that the
asked by keshia 
chemistry
I wonder if your science experts can help me find material (general information, word lists, books) in English about biodiversity in water and waterways and microbiological analysis of water. This would be for Italian biologists who are familiar with the
asked by Henry2 
Math
Use rational exponents to write x1/6*y1/5*z1/4 as a single radical expression
asked by Allison Anderson 
Math(module 4 Calculus)
(graphing calclator)give a four decimal approximation for the number 10^4C(25,5)/7!P(30,4)
asked by Furzeen 
chemistry
how many milliliters (ml) of H2 gas will be produced at 1.0 atm and 25 Celsius all the MG reacts?
asked by Roro 
Math
A farmer has 20 sheep and pigs. He has 6 fewer sheep than pigs. How many pigs does he have?
asked by Hayleigh 
math
Simplify by taking roots of the numerator and the denominator assume that all expressions under radicals represent positive numbers 3square 27x^8/y^3
asked by Allison Anderson 
physics
it takes a maximum force of 460 N to move a 125 kg crate. What is the coefficient of the maximum static friction between the crate and the floor?
asked by diana 
Physics
Charlie takes his 6000 kg avalanche truck and runs it into Jill's 2003 Chevy Trailblazer. If Jill's truck is red, how does the force acting on Charlie's truck compare to the force acting on Jill's truck?
asked by Diana 
SCIENCE
THE PIG HAS FOUR TOES ON EACH FOOT. TWO OF THE TOES ARE VERY SMALL AND DO NOT HAVE A MAJOR FUNCTION IN WALKING. HOW WOULD LAMARCK HAVE EXPLAINED THE REDUCED SIZE OF THE TWO SMALL TOES? WHICH PART OF HIS THEORY IS THAT AN EXAMPLE OF?
asked by ADAM 
Physics
Charlie takes his 6000 kg avalanche truck and runs it into Jill's 2003 Chevy Trailblazer. If Jill's truck is red, how does the force acting on Charlie's truck compare to the force acting on Jill's truck?
asked by Diana 
Physics
Charlie takes his 6000 kg avalanche truck and runs it into Jill's 2003 Chevy Trailblazer. If Jill's truck is red, how does the force acting on Charlie's truck compare to the force acting on Jill's truck?
asked by Diana 
Physics
Charlie takes his 6000 kg avalanche truck and runs it into Jill's 2003 Chevy Trailblazer. If Jill's truck is red, how does the force acting on Charlie's truck compare to the force acting on Jill's truck?
asked by Diana 
calculus
Evaluate the integral: ç[(6x+7)/(x^(2)8x+25),x]
asked by Bianca 
calculus 1a
simplify the following expression tan(sin^1(2x))
asked by Barbara 
English
What are ten things harry potter would bring if he had to go on a trip and can only bring 10 items?
asked by Bob Jones 
math
comparison of average in rainfall in august 0.19mm and december 0.89mm????
asked by vero 
math
Jane is taking a class and asks you to help her figure out what her last grade must be in the class to get a 85 in the class. She tells you the following calculation is used to find your final grade: w2d2 x is her last score which has not been taken.
asked by Jennifer 
Algebra
solve the amount of money (in cents) of x quarters and (x+6) dimes the value of a quarter is 25 cents and a value of a dime is 10 cents
asked by Mona 
algerbra 1
y=2x+2 m=____ Find the slope
asked by csa 
geometry
If AC is 50 feet, and AB is 40 feet, which is the length of BC?
asked by jose 
math
what is the opposite of g is at least 5
asked by Anonymous 
bio lab
Why photosynthesis does not occur in calibration tube which has water and chloroplast? Why we used deveined spinach leaves in photosynthesis reaction
asked by mas 
governemtn
Explain why the Baker v. Carr case and the Westbury v. Sanders cases had such a tremendous effect on the development of the concept of “one man, one vote.”
asked by Anonymous 
math
multiply and simplify 36b^2/5b^220b+20*5b10/6b.
asked by Allison Anderson 
chemistry
What are the oxidizing agents for Formic acid and Ferrous ammonium sulphate?
asked by Roseline 
french
I am trying to find the translation of this sentence but it is kinda funky. Au(x)quel(s) ne voulezvous point ressembler? do you know what it means in english? thanks
asked by Rebekah 
physics please help!!
You wish to have a plane pocket mirror that is as discreet as possible but with which you can see the whole width of your face. If your face is 22.0 cm wide, what is the minimum width, in cm, of the mirror for you to be able to see the whole width of your
asked by archi 
Math
If a*b = a^2 – b^2, what is the value of: 1) 6*4 2) 8*4 3) 10*5 4) 9*3 5) 20*15
asked by Werthy 
math
inflation 120 dollars now buys me 100 dollars worth of goods
asked by steve 
PSYCHOLOGY HELP PLEASE!
Mr. Buss is a business executive. He has been dedicated to the company for ten years and worked his way up the corporate ladder to the position of third vice president. He is the first to arrive and the last to leave each day. He has no patience with those
asked by Anonymous 
physics
a force of 50 n to the left causes a 1.35 kg book to have a net acceleration of 0.76 m/s^2 to the left. what is the frictonal force on the book?
asked by taylor 
math
how to write the rate as a unit rate?
asked by chelsey 
English
I just have a doubt on a few sentences. Thank you. 1) A pair of robins has (not have) been building a nest in the porch since last week. 2) If you want to visit the USA, you must (not have to) get a passport. 3) When Dorian sees the corrupted image on (in)
asked by Henry2 
statistic
Could you show me how to find the five levels in a Hof o and reject the null problems?
asked by larry 
Math Problem
You are planning to spend no less than $6,000 and no more than $10,000 on your landscaping project. Write an inequality that demonstrates how much money you will are willing to spend on the project.
asked by Lavern 
Cert III lab skills
Explain how to calculate preparing 250.0ml of 1.25 mol/L solution of Na2CO3(aq)
asked by lisa 
Economics
Variable cost divided by the change in quantity produced is A. average variable cost. B. marginal cost. C. average total cost. D. None of the above is correct.
asked by Tim 
Economics
If the market price falls below $4.50, the firm will earn A. positive economic profits in the short run. B. negative economic profits in the short run but remain in business. C. negative economic profits in the short run and shut down. D. zero economic
asked by Bob 
math
3/5 + 6 2/3 =
asked by james 
English
First of all is this free?
asked by amber 
thermodynamics
Two kilograms of an ideal gas undergoes an isentropic process from 670 KPag and a volume of 0.80 cubic meter to a final volume of 0.51 cubic meter. If constant pressure is 0.5215 and constant volume is 0.3152 KJ/kgK, what are (a) final temperature,
asked by hermie 
stats
I scored an 85 percent on my exam. The mean score for that quiz was 83.73 and standard deviation was 24.23 what is the z score for this exam?
asked by Anonymous 
English
What good book report needs to contain?
asked by Dana 
Algebra
Divide: (20b^(3)+17b^(2)+18b+43)÷(4b+5)
asked by Kelly 
Math
What is the difference between a likely event and an unlikely event?
asked by Nadine 
music
how old was johann pachelbel when he made his first song
asked by ilovej11 
Physics
The speed of an electron is known to be between 3.0×10^6 m/s and 3.3×10^6 m/s . Estimate the uncertainty in its position. Change in X = ? M
asked by Paige 
business communications
which of the following statement explains why threats are not effective for motivating people? A. THREAT REDUCE TENSION B. THREAT ENSURE That APPROPRIATE ACTION ARE NOT ABANDONED C. THREAT PRODUCT PERMANENT CHANGE D. THREAT PROVOKE COUNTERAGGRESSION
asked by marion 
History
Why were there major health problems in the British Caribbean between 18381876?
asked by Nneka 
math
What is the answer for 7cm plus 8 and 7 over 10cm plus 10cm?
asked by lynn 
factors math
The gcf(a,b) = 495 and lcm( a,b) =31,185 Find possible values of a and b if a is divisible by 35 and b is divisible by 81.
asked by kendra 
Social Studies
What are some response to the creation of concentration camps in nazi germany during ww2
asked by Cindy 
physics
Starting at = 0 , a horizontal net force 0.265 (0.445 is applied to a box that has an initial momentum 2.95 3.85 . What is the momentum of the box at = 2.15 ?
asked by Hasan 
Physics
What is the energy (in eV ) of a photon of visible light that has a wavelength of 500 nm ?
asked by paige 
math 4th grade
writing a sequence for the rule a4=b
asked by joe 
English
Search engines are most useful for finding: A. course information. B. books in a library. C. Web sites. D. scholarly journal articles.
asked by Leo 
clinical studies
ok so to summarise the task i have to consider scenario where the patient comes to you, you gave her all the medications that normally would work 100% on all patients, yet here it has no effect. Its obvious the patient didn't stick to the treatment you
asked by Viola 
English
Scholarly journal articles are written: A. By experts in a subject field B. By reporters C. By lower division college students D. For a general audience
asked by Leo 
statistics
An engineering company believes it has developed a faster way to complete the assembly of an industrial machine. The present process takes an average of 6.5 hours to complete and the times it takes to complete the process are approximately normally
asked by amy 
math
__X+1______x1____ x1 x+1
asked by iris 
math  Please help me to understand
The average selling price of homes in a certain city is $356,300. Assume the variable is normally distributed with a standard deviation of $64,600. If 396 homes are for sale, how many homes will sell for more than $325,000? (Round up to the next whole
asked by Jennifer 
Living environment
An athelete explains that his muscles have become welldeveloped through daily activities of weightlifting. He believes that his offspring will inherit this trait of well developed muscles. Which theory of Lamarck's does this example best demonstrate?
asked by SYNC 
math
divide (28b^3+13b^2+30b+35)/(4b+3)
asked by Allison Anderson 
Math
You own a small winery that produces two types of Chardonnay, an extra extra oaky one and an oaky one. The wines are produced from the same grapes. Furthermore, both wines are aged in oak barrels, and have additional oak chips added into the oak barrels.
asked by Mike 
algebra
Diameter of an electric cable is normally distributed with a mean f 0.8 with a standard deviation of 0.01. What is the probability that the diameter will exceed 0.83?
asked by debra rees 
Econ
If the government subsidizes the construction of ethanol refineries, how does that affect the corn market? demand increse or decrease OR supply increase or decrease
asked by Econ help please 
government
I have to make a chart that shows five interests that are affected by public policy decisions. I am not 100% sure on this but could No Child Left Behind, and Environmental safety (like the oil spill that just happened in the gulf)?
asked by m 
Great Expectations by Charles Dickens
If you had to describe the classic novel, Great Expections, by Charles !@#$%^&ens, in one word, what would you describe it as?
asked by Sam 
macroeconomics
For each of the following situations, indicate the direction of the shift in the supply curve or the demand curve for dollars, the factor causing the change, and the resulting movement of the equilibrium exchange rate for the dollar in terms of foreign
asked by Noor 
chemistry
What is the mass percent of a solution if 42.9 grams of aspirin is dissolved into 175 mL of ethanol? (Density of ethanol is 0.789 g/mL
asked by katie 
chemistry
What is the mass percent of a solution if 42.9 grams of aspirin is dissolved into 175 mL of ethanol? (Density of ethanol is 0.789 g/mL) 1. 31.1 % 2. 24.5 % 3. 23.7 % 4. 19.7 %
asked by katie 
English
Could you please check these sentences, too? THank you. 1) I've just received an email from our national agency informing me that the deadline to apply to them for a preliminary visit to define the topic of our project was 18 November. What do you think we
asked by Henry2 
geometry
If (adbc)/(abc+d)=(acbd)/(ab+cd) then prove that every portion is eqaul to (a+b+c+d)/4
asked by Pabitra 
statistics
4. Assume you are just planning this survey and want to know how many individuals you have to randomly select to be part of the sample. Assume that the purpose of the study is to calculate a 95% confidence interval for proportion of the adult population
asked by alex 
SCIENCE
PLEASE CAN ANYBODY TELL ME WETHER ROOTS ARE DECOMPOSERS OR NOT ?
asked by RAMY 
Science
A 10 N force pushes a rock due east while a 10 N force pushes the rock due north at the same time. What will the rock experience in terms of movement? (be specific)
asked by Jada 
differential equations
Solve the following equation explicitly by expanding up to order x5, the following 2nd order diff equation. y''(x) = (1 + x^2)*y(x) pls show working y =f(x)
asked by zac 
physics
it takes a maximum force of 460 N to move a 125 kg crate. What is the coefficient of the maximum static friction between the crate and the floor?
asked by diana 
math
how would i find the area of the parallelogram if the area of each right triangle region is 7 1/2 square inches
asked by hannah 
Literacy
1) A strong search strategy for a search engine would include which of the following? A. Using quotation marks, hyphens, and unique words B. Entering one or two related words C. Using several synonymous terms in the search D. Reading all the hits from your
asked by Anne 
physics
it takes a maximum force of 460 N to move a 125 kg crate. What is the coefficient of the maximum static friction between the crate and the floor?
asked by diana 
math
this is a math riddle that i can't do so please help i am a fraction eguivalent to 2/4 the sum of my numerator and my denominator is 21 what fraction am i here it is help me please's
asked by 5 grade 
grammar
Is asked theonly verb in this sentence? He finally asked for help with the difficult problem.
asked by Dakota 
math
You teach 40 students. Blue is a favorite color of 22 studetns; 19 own cars; 13 like flowers; blue is the favorite color of 10 students who own cars; blue is the favorite color of 7 students who like flowers' 8 own cars and flowers; and blue is the
asked by Dell 
arithmetic
the second term of an arithmetic sequence is 15,mand the sixth term is 43. what is the 289th term?
asked by kendra 
math
give the reason for the step taken angle 1 and angle 2 are linear pair angle 1 and angle 2 are supplementary a)congruent supplements theorem b)vertical angle theorem c)congruent complements theorem d)linear pair postulate
asked by arely 
Reading
What does spectacular mean? A. new B. interesting C. proud D. wonderful I think It's B or D.. is one of them right?
asked by Jaycee 
math
show that the sum of four consecutive whole number is divisible by 2
asked by mary lou 
social studies
a young jorge washington
asked by chad 
physics
it takes a maximum force of 460 N to move a 125 kg crate. What is the coefficient of the maximum static friction between the crate and the floor?
asked by diana 
French
I am trying to find the translation of this sentence but it is kinda funky. Au(x)quel(s) ne voulezvous point ressembler? do you know what it means in english? thanks
asked by Rebekah 
medical billing and coding
What medical codes do I use for this? 1.Staphylococcus aureus infection of tranplanted kidney.
asked by Yolanda 
economics
Payroll Tax You are an economic consultant to a city that just imposed a payroll tax of $1 per hour of work. This payroll tax is paid by workers through a payroll deduction; for each hour of work, the employer deducts $1 and sends the money to the city
asked by Anonymous 
Physics
Write a Balmer formula and explin each terms
asked by Shamsuddeen 
chemistry
What mass of calcium carbonate is precipitated out when 2.20 g of ammonium carbonate is added to 25.7 mL of a 4.00 M solution of calcium nitrate?
asked by James 
government
_____ divides the government into three branches, each controlled by a different group of people
asked by juwan mollison 
Physics
Write a Balmer formula and explin each terms
asked by Shamsuddeen 
Government
2. Advocates of a parliamentary system argue that Congress is inefficient, moves slowly and develops policies filled with compromises. What evidence supports this negative evaluation? Your answer should discuss the intentions of the Founding Fathers, the
asked by Anonymous 
Math
To determine the question use Frogs F and G are 5cm to cube and 40cm to cube. a. Ratio What are ratio volumes and surface areas for a frog? (The formula for figuring out this data A correlation V square=2/3 Ratio Volumes: Surface areas: b. Toxin Let us say
asked by Frank 
geometry
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asked by Anonymous 
chemistry
Explain the difference between the enthalpies of formation of gaseous water and liquid water which are respectively, 242 and 286 kj/mol at 298 K.... Explain Please!
asked by DylS 
Chemistry
although the conversion of O2 to O^2 is rather endothermic, many elements react with oxygen in relatively mild conditions. Explain. Please help I am not sure about this.
asked by Lucy 
Social Studies
Who was Paul Revere? On my paper I put He was an American silversmith. But I don't know what else to add on to it
asked by Jaycee 
math
The gcf(a,b)=495 and cm(a,b)=31,185 Find possible values of a and b if a is divisible by 35 and b is divisible by 81
asked by jessica