Questions Asked on
November 1, 2014

College Chemistry
Please tell me what I did wrong on this problem: Given the equation Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g), Calculate the number of grams of CO that can react with 0.370kg of Fe2O3 Here's what I did: .370kg x 1000 = 370g of Fe2O3 370g/[(55.85 x 2) + (13 x 3)] =
asked by Theresa 
Math
A plane leaves an airport X, 20.6degrees east and 36.8 north degrees and flies due south along the same longitude for 8 hours at the rate of 1000km/h to another airport Y, 20.6degrees east and tita degree south. The plane then flies west to another airport
asked by Anonymous 
chemistry
Ima Chemist found the density of Freon11 (CFCl3) to be 5.58 g/L under her experimental conditions. Her measurements showed that the density of an unknown gas was 4.38 g/L under the same conditions. What is the molar mass of the unknown?
asked by please help 
Criminal Justice/Report Writing
What is a common mistake most investigators make in the interview? A. They do not give the interviewee enough time to answer a question before asking another one. B. They break for lunch too early. C. They let an interviewee talk without interruption,
asked by Pat 
Math
tariq jogs 63250 m every week. how much will he jog in 149 days? Give your answer km.
asked by Noor 
chemestry
consider the reaction 2N2O(g) == O2(g)+2N2(g).which of the following will cause a shift in the equilibrium to the left?
asked by sara 
Math
There h horizontal lines and v vertical lines drawn in a plane. There are r ways to choose four lines such that a rectangular region is enclosed. Given that r is divisible by 1001. Find the minimum value of h+v. I am really not sure where to start.
asked by Anonymous 
Calculus
Assume that a demand equation is given by q=9000100p. Find the marginal revenue for the given production levels. a. 500 Units the marginal revenue at 500 units is
asked by Duane 
Math Help
1.) Use the graph of f to describe the transformation that yields the graph of g. f(x)=10^x g(x)= 10^x+3 a.) Reflect the graph of f in the yaxis and shift three units to the left. b.) Reflect the graph of f in the yaxis and shift three units to the
asked by Kalani 
physical science
A gold bar has a mass of 250 grams and is heated from 25 degrees Celsius to 55 degrees Celsius. How much heat did the gold bar absorb? The specific heat of gold is 0.13J/g*degrees C.
asked by staci 
Strayer
A certain test is worth 125 points. How many points (rounded to the nearest point) are needed to obtain a score of 85%?
asked by Jimmyse 
math
find the distance between the points (20,16) and (15,19). also find the midpoint of the segment that joins the points. what is the distance?_____ what is the midpoint?______
asked by Ernie 
Thermodynamic
The equilibrium constant of a reaction is determined at 2 different temperatures: at 181°C, Keq = 2770 at 11°C, Keq = 640
asked by Sophie 
Math
A woman has money in two accounts. One account pays 7% annual interest, whereas the other pays 15% annual interest. If she has $1,500 more invested at 15% than she does at 7% and her total interest for a year is $1,545, how much does she have in each
asked by Chris 
Physic
A ceiling fan is rotating at 0.50 rev/s. When turned off, it slows uniformly to a stop in 11 s. (a) How many revolutions does it make in this time? (b) Using the result from part (a), find the number of revolutions the fan must make for its speed to
asked by Anonymous 
Physics
Three particles X, Y, and Z of masses 2 kg, 5 kg, and 4 kg respectively are arranged in order along a straight line. Y is 5.0 m from X and 7.0 m from Z. The distance of the centre of mass of the system of mass from X is? ANS: 6.6 m Help please? I don't
asked by Ariana 
physics
A 75 kg hockey player glides across the ice on his skates with steel blades. What is the magnitude of the force of friction acting on the skater?
asked by Rani 
chemistry
convert the condensed formula to a complete and skeletal structure of the following formula (ch3)2chch2ch3
asked by hensha 
history
Check my answers? True/False South Carolina was allowed by Congress to nullify federal tariffs which hurt their economy. False, the Senate came up with a Compromise where federal tariffs would be reduced for SC. One of the most dependable & profitable
asked by Anonymous 
Chemistry
If a calorimeter has a mass of 6.0 g, a specific heat of 2.0 J/(g*C), and it and its contents undergo a temperature increase of 5.5 *C, how much heat is gained by the calorimeter?
asked by Mary 
HISTORY
In the midnineteenth century new waves of immigrants came to the United States, most of them from ___ and ___. Northern & Western Europe?
asked by Anonymous 
Physics
What is the maximum speed of a 3.40g particle that oscillates between x =2.0mm and x =8.0mm in the figure? (Figure 1) Description of Figure: Parabola with the lowest point at (4,1) parabola starts at(2,5) and ends at (8,5) Yaxis is U(J) Xaxis is x(mm)
asked by Dib 
chemistry
magnesium metal (1.00 mol) and a volume of aqueous hydrochloric acid that contains .500 mol of HCL are combined and react to completion. how many liters of hydrogen gas, measured at STP, are produced? Mg(s) + 2HCL(aq) > MgCl2(aq) + H2(g)
asked by Anonymous 
Algebra
If P(x)=4+2sqrt(x+2) and G(x)=43X, then what is the largest constant such that P(G(a)) is defined? Thank you!
asked by Trish Goal 
Maths
The 4th term of an AP is 6 if d sum of d 8th and 9th term is 72 the common difference is
asked by Ada 
calculus
Suppose the volume, V , of a spherical tumour with a radius of r = 2 cm uniformly grows at a rate of dV/dt= 0.3 cm^3/day where t is the time in days. At what rate is the surface area of the tumour increasing? The volume of a sphere is given by V =4
asked by Quratulann 
physics
A dart is thrown horizontally toward X at 30 m/s as shown. It hits Y 0.29 s later. The distance XY in centimeters is:
asked by Anonymous 
algebra
of 320 consumers polled, some purchase Bluray movies, some purchase movies on DVD, and some do both. If 300 people polled purchase Bluray discs and 280 purchase DVD's and Bluray discs, how many people only buy DVD's?
asked by Berta 
Physics
1.71 kg of glass (ρ = 2.66 x 10^3 kg/m3) is shaped into a hollow spherical shell that just barely floats in water. What are the (a) outer and (b) inner radii of the shell? Do not assume the shell is thin. Volume = 2.66 * 10^3/1.71 V=1555.56 m^3 V=pi(r^2)h
asked by Jason 
Statistics
a Rollercoaster's auditors estimate that the average daily loss from those illegally riding without tickets is at lease (greater or equal) $295, but wants to determine the accuracy of this statistic. The company researcher takes a random sample of losses
asked by Robert 
Math
Jane grows several varieties of plants in a rectangularshaped garden. She uses fencing to divide the garden into 16 squares that are each 1 m by 1 m. She also puts fencing around the perimeter of the garden. What should the dimensions of the garden be so
asked by Anonymous 
Algebra 2
A player throws a ball up and toward a wall that is 17 feet high. The height h in feet of the ball after t seconds after it leaves the player's hand is modeled by h=16t^2+25t+6. If the ball makes it to where the wall is, will it go over the wall or hit
asked by KYLA 
Physics
A bowling ball encounters a 0.760 m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictional losses and assume that the mass of the ball is distributed uniformly. The translational speed of the ball is 5.40 m/s at the
asked by Shawn 
Algebra
86i / 3i 3i / 4+2i I = imaginary numbers
asked by Amy 
Physics
What is the maximum speed of a 3.40g particle that oscillates between x =2.0mm and x =8.0mm in the figure? (Figure 1) Description of Figure: Parabola with the lowest point at (4,1) parabola starts at(2,5) and ends at (8,5) Yaxis is U(J) Xaxis is x(mm)
asked by Dib 
statistics
31% of a certain breed of rabbits are born with long hair. What is the probability that in a litter of 8 rabbits, exactly 5 will have long hair? (Give your answer correct to three decimal places.)
asked by rhonda 
Algebra
If x & y = the following table what is the function of x? x = 1,2,3,4 Y = 1,3,5,7
asked by Steve 
computer programing
You are to write a short C program. The program will input two numbers: 1) number of miles to ship a package, 2) and the weight of the package You are to computer the price to ship the package. The formula is as follows. If the weight of the package is
asked by med 
criminal justice
how each player in the criminal justice system impacts the decisionmaking process.
asked by joanna 
social
what is hwang ho civilization ?
asked by liza 
psychology
Edwina is worried, anxious, and sure that something terrible is going to happen to her. She’s not sure what it would be, but she “just knows.” The feeling occurs on almost a daily basis and frequently keeps her awake at night. In addition, for the
asked by Anonymous 
physics
An m=150 g block hits an M= 265 g block initially at rest on a horizontal surface. After impact they stick together and slide 7.47 m before coming to rest. The coefficient of friction between blocks and surface is 0.39. a) What is in m/s the speed of both
asked by Serena 
physics, math
A hot air balloon with a mass of 18.0 kg is accelerating upward at 1.80 m/s^2 (Anet = 1.80 m/s^2). What is the weight and buoyant force acting on the balloon?
asked by Sarah 
research topic child development
I was reading a story earlier this evening, and I was wondering whether one detail could have been inspired by real life. Has anyone ever studied which parenting styles are most likely to lead to kids later having bad behavior?
asked by Kerry 
English
Dogs have helped blind people for many years. They are not only helper animals.  Is the expression 'helper animals' correct? Do you have other expressions for that?
asked by rfvv 
English
Bill didn't wear gloves as he made a snowman. => His hands got very cold.  In the first sentence, what does 'as' mean? Does 'as' mean 'when' or 'because'?
asked by rfvv 
Maths
Sue and Mary agree to play the best of three games of badminton. They stop if either of them have won two games. Over a long period of time, Sue wins 4 games out of every 5 games they play. Find the probability that Sue will win the best of three. I have
asked by Dark 
inequality
Jim uses office scanner to scan pages at rate of $.09 per page. He decides to rent a scanner for$70 a year. The cost of scanning using the rental is $.02 per page. Need inequality that can be used to calculate the number of pages that he should scan in a
asked by Anonymous 
Calculus
In 1907 Kennelly developed a simple formula for predicting an upper limit on the fastest time that humans could ever run distances from 100 yards to 10 miles. His formula given by t=.0588s^1.125 where s is the distance in meters and t is the time to run
asked by Duane 
math
In the ocean, there are areas where there are very few living things. _________________________ is the term that describes when this happens to a natural area.
asked by Help science 
Criminal Justice/Writing Search Warrants
When writing the description for the property you are going to search for, the description must be detailed: A. so the average person can distinguish among similar objects in the search. B. so that only the magistrate and investigator can discern the
asked by Pat 
chemistry
The value of ΔH° for the reaction below is 1107 kJ: 2Ba (s) + O2(g) → 2BaO (s) How many kJ of heat are released when 5.75 g of Ba (s) reacts completely with oxygen to form BaO (s)?
asked by Anonymous 
Math
Create your own polynomial with a degree greater than 2.Find the 0's of the function.
asked by angela 
Chemistry
Calculate the solubility of Kcl2 in mole per dm cube of water at 90 dgree celcius if 10grams of the solute will saturate 20grams of water
asked by Oreoluwa 
MATHS
Each Sunday the hymns to be sung are displayed on a hymnboard using numbered cards. The cards have the digits 0 to 9 on them. The hymn book has 750 hymns in it. Three different hymns are sung each service. a) What is the smallest number of cards the
asked by ALISHA 
Maths Lit, Tourism, Geography, Life Sciences
I want to study Sports Management, so I want to know if its possible with these subjects
asked by Rorisang 
sda high
A population has a mean of 200 and a standard deviation of 50. Suppose a simple random sample of size 100 is selected and is used to estimate μ. What is the probability that the sample mean will be within 5 of the population mean?
asked by lawrence 
MATHS
Two yummy bars plus three delish bars cost a total of $7.50. Three yummy bars plus two delish bars cost a total of $8.00. How much does one yummy bar cost?
asked by LISA 
Chemistry
If you weighed out 0.38 grams of calcium and reacted it with excess amount of HCI how many miles of H2 grams would you expect to produce?
asked by Joann 
Science
What is the term use to study the satellite television instruction experiment?
asked by Arun 
engineering
should my calculated bulk modulus of a liquid be ()? the lookup tables i'm comparing the results too have positive values, or is it written without the () as a negative bulk modulus is impossible?
asked by bob 
Algebra
Define a#b as the arithmetic mean of a and b. What is the value of ((1#2)#2)#4? Express your answer as a common fraction. The hashtag is just a sign. Thank you!
asked by Trish Goal 
Chem
I am still having problems this question 2. Review Examples 7.3 and 7.4, as well as the equation for E in the chapter notes. Suppose an e−1 in an H atom has a transition from n = 3 to n = 2. a. Determine the energy (E) of the released photon. b.
asked by Feather 
Chem
An e−1 is released by an electron microscope at 3.00 × 106 m/s. Determine in meters using the de Broglie relation Substitute kgˑm2/s2 for J and show all units. Then, convert to pm and show the conversion factor. Determine the kinetic energy
asked by Feather 
math
in math problem.how to change simplified fraction form 2/3 to decimal form and percent form
asked by ivan 
Math
Find the linear approximation of f(x)=ln x at x=1 and use it to estimate ln 1.12. L(x)= ? ln 1.12 \approx ?
asked by Joseph 
science
what is scorpius
asked by jyoti 
computer
program in c++ to convert fahrenheit into centigrade
asked by jyoti 
MATH
Fraction form 1/3 if changed Decimal form it is 1/3=0.331/3 if changed to Percent form it is 1/3=331/3% Is this correct? I just want make sure.
asked by ivan 
Math
If the correct answer is 7.52609, which of the following entries would be counted as correct? That is, which entries are withing Webassigns default tolerance? select all that apply. 7.4 7.3680 7.53 7.458 7.68 7.5938
asked by Michael 
math
what **1/8 means?.
asked by ivan 
College Intermediate Algebra
The base of a triangle is terms of x is 2x+4x+2 and the height is x2+3x4. What is the area of the triangle. I need to know am if I'm on the right track Area=1/2(2x+4x+2) (x2+3x4)
asked by Babydoll07 
Math
If fencing cost $7 per foot find the total cost of fencing a rectangular garden 36ft by by 12ft
asked by Anonymous 
MATH: Need help please
Find the linear approximation of f(x)=\ln x at x=1 and use it to estimate ln 1.12. L(x)= . ln 1.12 approx
asked by Anonymous 
Chemistry
Suppose 55.3 L of a gas is at a temperature of 73. °C. If its temperature is increased to 411. °C, what will its volume be then?
asked by Anna 
Chemistry
A meteorological balloon contains 237. L of helium at 33. °C and 0.832 atm. If the volume of the balloon can vary according to external conditions, what volume would it occupy at an altitude at which the temperature is 57. °C and the pressure is 0.094
asked by Anna 
Calculus
The blood alcohol concentration after a drink has been consumed can be modelled by c(t)=(0.02t)e^(−0.05t) where t is the time in minutes elapsed after the consumption of the drink and c(t) is the concentration in mg/mL at t. At what time in the first
asked by Anonymous 
Math
Simultaneous equations The tickets for a sports club disco cost £2 for members and £3 for nonmembers. a)The total ticket money collected was £580. x tickets were sold to members and y tickets were sold to nonmembers. Use this information to write
asked by Caitlin 
Fluid Mechanics
2. Air enters a converging nozzle at 3.5 m/s at 1.2 kg/m3. The inlet area is 5 cm2. If the outlet area is 1.7 cm2 and velocity of 7.5 m/s, determine the volume flow rate and air density at the nozzle outlet.
asked by Farah 
Fluid Mechanics
An ideal mixing (total volume inlet = total volume outlet) of two incompressible fluids which is between water and methanol (SG =0.85) is coming from two inlets. At inlet 1, water enter at 9 m/s and at inlet 2, methanol enter at 7 m/s. The diameter of
asked by Farah 
science
magnesium oxide reacts with phosphoric, H3PO4 TO PRODUCE MAGNESIUM PHOSPHATE AND WATER. HOW MANY GRAMS OF MAGNESIUM OXIDE ARE REQUIRED TO REACT COMPLETELY WITH 33.5G OF PHOSPORIC ACID?
asked by obuchi 
Managerial Economics
Mirk Labs is a pharmaceutical company that currently enjoys a patent monopoly in Europe, Canada, and the U.S. on Zatab, an allergy medication. The global demand for Zatab is Qd= 15.0 0.2 P where Qd is annual quantity demanded (in millions of units) of
asked by Da One 
Math
5/6=1/3x
asked by Bob 
st xaviers matj
Construct a square ABCD whose ACAB=3cm
asked by Subhrajit 
chemistry
Complete the following reactions, where applicable. If no reaction occurs write N.R A) blank + blank > Cu(NO3)2 + PbSO4 B) C6H12O6 + O2 > blank + blank C) AgNO3 + CuCI2 > blank + blank
asked by Rosie 
Intermediate Algebra
factor (x3)^2 +10(x30)+24
asked by Anonymous 
Physics
A car is traveling along a road, and its engine is turning over with an angular velocity of +190 rad/s. The driver steps on the accelerator, and in a time of 13.0 s the angular velocity increases to +300 rad/s. (a) What would have been the angular
asked by Sanz 
algebra
factor (x3)^2 +10(x30)+24
asked by Anonymous 
college algebra
(x3)^2+10x30+24
asked by Anonymous 
College Intermediate Algebra
(x3)^2 + [10x30] +24
asked by Anonymous 
Statistics
a. What is the probability that a sample of 50 male graduates will provide a sample mean within $.50 of the population mean, $21.68? b. What is the probability that a sample of 50 female graduates will provide a sample mean within $.50 of the population
asked by Dot 
Criminal Justice/Report Writing
When a violent crime is committed, the investigating officer will attempt to determine the suspect's method of operation. This should be recorded in which face sheet section? A. M.O., or modus operandi B. M.E., or method of entry C. Method of escape D.
asked by Pat 
Statistics
We're doing a project. I have all my data, but I'm not sure about what this is asking for. Use your regression equation to determine the purchase price for the 1999 Jeep Grand Cherokee. How does the predicted value, ŷ, compare to the average selling
asked by AnaGloria1020 
Physics
You swing a 2.40kg stone in a circle, using the full length of a thin 60.0cm rope.
asked by Erika 
Math/I'm an adult
if 14W=5R, what does 16W equal?
asked by Sharon 
Math
the lenght of a rectangular field is thrice its breadth. if the area of field is 7500 m square, find the cost of fencing the field at the rate of RS 10 per meter
asked by Vaibhav lamba 
physical eduaction
what can potentially have the most impact on physical education outcomes other than class size? a .type of equipment used b. amount of equipment available c. attitude of the classroom teacher d. lack of funding for equipment
asked by ashley 
Chemistry
A 0.2800 g sample of an unknown acid requires 28.22 mL of 0.1199 M NaOH for neutralization to a phenolphthalein point. a.) How many moles of OH are used? b.) How many moles of H+ are found in the acid? c.) What is the calculated equivalent molar mass of
asked by Jess 
UOP
a bond that has a $1000 par value (face value) and a contract or coupon interest rate of 10.9%. The bonds have a current value of $1,120 and will mature in 10 years. The firm's marginal tax rate is 34%. The cost of capital from this bond debt is what
asked by Nikky 
criminal justice
what is the impact of discretion with respect to the major players (prosecutor, defense attorney, judge, defendant and victim) in the judicial system
asked by Patiance 
Math
Write an equation of a line that passes through the point (8,2) that is (a) parallel and (b) perpendicular to the graph of the equation y= 4x +3
asked by Cassandra 
MATH
POINT A AND POINT B ARE 5 UNITS APART .THE COORDINATES OF POINT A ARE (3,9).THE y COORDINATES OF POINT B IS 9 .WHAT IS A POSSIBLE XCOORDINATE FOR POINT B?
asked by ZAIN 
Math
Jane grows several varieties of plants in a rectangularshaped garden. She uses fencing to divide the garden into 16 squares that are each 1 m by 1 m. She also puts fencing around the perimeter of the garden. What should the dimensions of the garden be so
asked by Anonymous 
AP Calc. AB
If f(x)=2x+sin(x) and the function g is the inverse of f, then g'(2)=?? a. 0.40 b. 0.38 c. 0.34 d. 0.32 e. 0.36
asked by Rachel 
Criminal Justice/Report Writing
If a Miranda admonishment is needed, the generally accepted method of giving it is to: A. recite the Miranda admonishment from memory. B. give the interviewee a printed Miranda admonishment to read. C. ask the interviewee if he or she already knows the
asked by Pat 
Physics
The colors we see when looking at an object depend on the _________. A) density of the object B) amplitude of the light we see C) frequency of the light we see D) mass of the object we are looking at I think it is A
asked by sally 
chemistry
a 0.96 millimole sample of Na2CO3 gave 0.9 millimoles of CO2 gas. If a 0.376 g of pure Na2CO3 was reacted with excess acid, what volume of gas will be measured on this apparatus
asked by kimberly 
chemistry
The antacid in question (with an active ingredient of Ca(HCO3)2), upon treatment with excess hydrochloric acid, a 0.413 g sample gives 92.85 mL of CO2 at 25.00oC and 1.000 atm. What percentage of the antacid is active ingredient? Assume a perfect system
asked by kimberly 
Statistics
I have all the data, I just need someone to tell me how to start xc Please! I've been working on this for 5 hours now! 8. Calculate the equation of the least squares regression line. Draw this line on your scatter plot. The point (x,y) should lie on the
asked by AnaGloria1020