Questions Asked on
April 11, 2014

chemistry
Calculate the standard cell potential for each of the electrochemical cells? 2Ag+(aq)+Pb(s)→2Ag(s)+Pb2+(aq) E∘cell......V? 2ClO2(g)+2I−(aq)→2ClO−2(aq)+I2(s) E∘cell......V? O2(g)+4H+(aq)+2Zn(s)→2H2O(l)+2Zn2+(aq) E∘cell......V?
asked by John 
science
what is the momentum of a 20.0 kg scooter traveling at 5.00 m/s?
asked by steve 
Math
a flower was 1.6 meters high one week ago in 7 days it grew 11 centimeters find the current height of the flower 12.3 m, 1.71 m, 125 cm or 11.2 cm , i did times tables and got 17.6 and then i tried deviding but got a weird long number that wasn't on the
asked by Naomi 
chemistry help~Please!!!
What are the Ka and/or Kb value for 1M ZnCl2 Show work please!!!
asked by Eric 
Science help!?
. If a kestrel eats a mouse that eats grass, the kestrel is a (1 point)producer. secondlevel consumer. firstlevel consumer. decomposer. 2. Which of the following best explains why a species of lizard is able to live in the desert but not in tundra
asked by Anonymous 
Statistics
The Weight of a small Starbucks coffee is normally distributed random variable with a mean of 360 grams and a standard deviation of 9 grams. Find the weight that corresponds to each event. a. highest 10% b. highest 50% c. highest 5% D. highest 80% e.
asked by Kelly 
Social Studies
Who determines the candidates in Iran's elections?
asked by Kelley 
English
Please check if my answer is correct... Identify the INCORRECTLY punctuated sentence. In softball, pitchers throw the ball underhand; in baseball, the ball is thrown overhand. • Ice hockey is played on a rink; but field hockey is played outdoors. •
asked by Sandra 
trig
Given angle x,where 0
asked by John 
Ap Chem
Fe(s) + Cu2+(aq) Fe2+(aq) + Cu(s) If Ecell = 0.780 V and [Fe2+] = 1.0 M, what is [Cu2+]?
asked by Anonymous 
Social Studies
What important resource do qanats move? Solar Power Oil Water Natural gas
asked by Red 
Math HELP
a flower was 1.6 meters high one week ago in 7 days it grew 11 centimeters find the current height of the flower 12.3 m, 1.71 m, 125 cm or 11.2 cm , i did times tables and got 17.6 and then i tried deviding but got a weird long number that wasn't on the
asked by Naomi 
physics
An object–spring system undergoes simple harmonic motion. If the mass of the object is doubled, what will happen to the period of the motion?
asked by Paige 
physics
A 0.527 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, and comes to rest some distance above the plunger. The plastic tube has an inner radius of 7.07 mm, and is frictionless.
asked by Paige 
College Physics
A uniform stationary ladder of length= 5.1 m and mass= 15 kg leans against a smooth vertical wall, while its bottom legs rest on a rough horizontal floor. The coefficient of static friction between floor and ladder is μ = 0.41. The ladder makes an angle
asked by Michelle 
Physics
A uniform bar length of 2.0m and weight 1000 N has its center of gravity at its center. The bar is pivoted 0.5m from the right, and supports a weight of 200N on the opposite end (left end). What is the weight needed at right end of the bar to balance the
asked by Erin 
Social Studies
Which city is most likely to be a major population center? Yazard, in the desert of central Iran Kars, located in mountainous eastern Turkey Mashad, in a valley in northeastern Iran Galata, in the cool mountain highlands of Cyprus
asked by Serenity 
statistics
Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 28 Minutes and a standard deviation of 4 minutes, while B has a mean of 32 minutes and a standard deviation of 2 minutes. a)which procedure is preferred
asked by Rontheman 
Statistics
Information from the American Institute of Insurance indicates the mean amount of life insurance per household in the United States is $120,000. This distribution follows the normal distribution with a standard deviation of $38,000. (A) If we select a
asked by Student5 
chemistry
If a 1.60 M sample of A is heated to 500 K, what is the concentration of B at equilibrium? A(aq) 2B(aq) Kc=9.63x10^6
asked by Anna 
Finance
Joe and Sue invested $1500 at Bank America in 2000, at 4% compounded quarterly. In the year 2005 they moved to another city and took the total money from their first investment added $500 and invested it at Bank Bravo, at 5% compounded quarterly. a. What
asked by Mai 
finance
You just won the Publisher's Clearing House Sweepstakes and the right to 20 aftertax ordinary annuity cash flows of $163,291.18. Assuming a discount rate of 7.50%, what is the present value of your lottery winnings? Use a calculator to determine your
asked by gillianp 
Statistics
An accelerated life test on a large number of typeD alkaline batteries revealed that the mean life for a particular use before they failed is 19.0 hours. The distribution of the lives approximated a normal distribution. The standard deviation of the
asked by Ryan 
physics
A block is attached to a horizontal spring and set in simple harmonic motion, as shown in the figure. At what point in the motion is the speed of the block at its maximum? The position of the block when the spring is relaxed is marked by x = 0, and the
asked by Paige 
Corporate Finance
Bond price: Briar Corp is issuing a 10year bond with a coupon rate of 7 percent. The interest rate for similar bonds is currently 9 percent. Assuming annual payments, what is the present value of the bond? (Round to the nearest dollar.) $990 $872 $1,066
asked by Judy 
Statistics
The Amount of filling a halfliter (500ml)soft drink bottle is normally distributed. The process has a standard deviation of 5ml. The mean is adjustable. A. Where should the mean be set to ensure a 95% probability that a halfliter bottle will not be under
asked by KT 
algebra
What is the length of the line segment shown below? If necessary, round your answer to the nearest hundredth. (3,0) and (0,6)
asked by need help apex!!!!!!!! 
Elementary Statistics
There are 100 questions from an SAT test, and they are all multiple choice with possible answers of a,b,c,d,e. For each question, only one answer is correct, find the standard deviation for the numbers of correct answers for those who make random guesses
asked by Confused 
Chemistry
Calculate ΔG∘rxn and E∘cell for a redox reaction with n = 1 that has an equilibrium constant of K = 28? What would be the answer to this fine question. How would you do something like this? Thanks :) ΔG∘rxn = ......kj E∘cell = ......V
asked by John 
chemistry
2NH4NO3 > 2N2 + O2 + 4H2O What mass of H2O can be formed from the decomposition of 12.0 g of NH4NO3?
asked by aubrieana 
algebra Word problem
what interest rate is required for an investment subject to continuous compounding to triple in 15 years? A= Pe^rt ?
asked by Kira 
finance
Four years ago, Robert's annual salary was $52,500. Today, he earns $73,800. What has been the average annual rate of growth of Robert's salary?
asked by gillianp 
math
Number of apartments rented The manager of an 80 unit apartment complex knows from experience that at a rent of £¤300 per unit, all the units will be full.On thw average, an additional unit will remain wacant for each £¤20 increase in rent over
asked by john 
math
A stone is dropped from a cliff 344 feet high. after how many seconds will it be 200 feet above the ground?
asked by luis 
Chemistry
Sodium sulfate is slowly added to a solution containing 0.0500 M Ca2 (aq) and 0.0290 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to precipitate?
asked by Neeta 
Chemistry
1. 3 Sn2+ (aq) + 2 Al(s) > 2 Al3+ (aq) + 3 Sn(s). What is the voltage for this cell? 2. What is the voltage for the cell in question 1 if the Sn2+ (aq) is [.15] and Al3+ (aq) is [1.80]? 3. Using proper line notation, describe the cell described in
asked by Bryce 
math
The Standard blend of coffee uses 4 oz arabica beans and 12 oz of robusta beans per package; the Deluxe blend uses 10 oz of arabica beans and 6 oz of robusta beans per package. The merchant has 80 lbs. of arabica beans and 90 lbs. of robusta beans
asked by anonymous 
chemistry
You need to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solution. You have a 0.1896 M standard solution. You take a 25.00 mL sample of the original acid solution and dilute it to 250.0 mL. You then
asked by Steven 
Physics Energy
How would a $10.00 compact fluorescent light bulb (15 W) be an overall money saver compared to an incandescent light bulb (60 W) that costs $0.50?
asked by Liz 
math
Gopal spent three fifths of his money in the first week and one third of the remainder in the secondweek.He spent $110 altogether.How much money did he have left?
asked by sally 
World Civilization
1. In 1789, the National Assembly revoked the privileges of the aristocracy. This occurred in reaction to A. a peasant uprising. B. Louis XVI's withdrawal of troops from Paris. C. discontent among the poor people of Paris. D. the storming of the Bastille
asked by Rebecca 
statistics
A large number of applicants for admission to graduate study in business are given an aptitude test with a resulting mean score of 460 with a standard deviation of 80. The top 2.5 percent of the applicants would have a score of at what? A. 606 B. 617 C.
asked by Jill 
Stats.
Find the standard normal area for each of the following, showing your reasoning clearly. a. P(1.22
asked by Kelly 
Math
The cost of renting a car is a flat $25, plus an additional 9 cents per mile that you drive. How far can you drive for $71?
asked by Darien 
Statistics
A coladispensing machine is set to dispense a mean of 2.024 liters into a container labeled 2 liters. Actual quantities dispensed vary and the amounts are normally distributed with a standard deviation of 0.040 liters. What is the probability a container
asked by Student5 
ALGEBRA
y = −x^2 + 8 Axis of symmetry?
asked by KMILL 
Stats Class
Passengers using New York's MetroCard system must swipe the card at a rate between 10 and 40 inches per second, or else the card must be reswiped through the card reader. Research shows that actual swipe rate by subway riders are uniformly distributed
asked by Amanda 
Math
Hello I was wondering if you can help me with some math. I cant figure this problem and when my friend helped me they came up with a different answer. The question is find the surface area of the cylinder. The radius is 8 and the height is 8. Use 3.14 for
asked by SebbyChan 
Physics
A space probe is traveling in outer space with a momentum that has a magnitude of 7.84 x 107 kg·m/s. A retrorocket is fired to slow down the probe. It applies a force to the probe that has a magnitude of 1.29 x 106 N and a direction opposite to the
asked by Anonymous 
chemistry
2NH4NO3 > 2N2 + O2 + 4H2O What mass of H2O can be formed from the decomposition of 12.0 g of NH4NO3?
asked by aubrieana 
math
How many different integers, n, are there such that the difference between 2 x n squared and 7 is less than 1? The supposed answer is 6 but i have NO idea how that's possible??
asked by ollie 
math
All of the 5th grade teachers and students from Almond went on a field trip to an archaeology museum. Tickets were $8.50 each for teachers and $2.00 each for students, and the group paid $29.00 in total. A few weeks later, the same group visited a natural
asked by Anonymous 
English
1. You have to study hard to get into university. 2. You have to study hard to go into university. 3. You have to study hard to enter university. 4. You have to study hard to enter the university. (Are the four sentences all grammatical and the same?)
asked by rfvv 
math
Solve 40e^(0.6x)  3=237
asked by james 
Math
Some fleet car license plates contain 4 numbers followed by 3 letters and then another 3 numbers. If this were the standard fleet car license plate and there are no other constraints, the number of plates that could be manufactured is
asked by Jessica 
domestic violence
why might it be necessary to remove a possible suspect right away from the scene and hold them involuntarily for evaluation at a mental health facility?
asked by john 
trig
Given angle x, where 0
asked by John 
personal finance
If you believe that a firm will grow rapidly in the future, you should buy its? a. common stock b. notes c.preferred stock d. notes
asked by tammy 
isd muscat
after two hours 1/16th of the radioactive isotope remains undecayed.half life of the isotope is
asked by saritha 
biology
Red is dominate over blue, give the genotype for an individual who is heterozygous red, homozygous red, and blue.
asked by HELP!!!! 
Algebra  functions
Given the function: f(x) = 5/(x1)^2 Find the Horizontal Asymptote: Vertical Asymptote: Hole(s): X intercept: Y intercept:
asked by Kendrick 
prealgebra
Check whether (1, 5) is a solution of the system of equations. y = 2x + 3 y = x  4 I said no because one comes up a positive 5 and the other a negative five. Am I correct
asked by berta 
College Algebra
An event in the Summer Olympics is 10meter springboard diving. In this event, the height s, in meters, of a diver above the water t seconds after jumping is given by s(t) = –4.9t2 + 7.1t + 10. What is the maximum height that the diver will be above the
asked by Kelly 
Cultural Anthropology
how are traditional anthropological fieldwork techniques used in applied anthropology? How does applied anthropology benefit modern social problems? Thank you!
asked by Eric 
astronomy
Imagine that you live in a distant galaxy far far away. This galaxy is in a different universe, and so may have different cosmology. It seems that in this distant universe, all galaxies have the same luminosity, which you have worked out is 7.0*10^30 W.
asked by keitanako 
Physics
A wheel with a weight of 395N comes off a moving truck and rolls without slipping along a highway. At the bottom of a hill it is rotating at an angular velocity of 23.0rad/s . The radius of the wheel is 0.607m and its moment of inertia about its rotation
asked by l 
Physics
Standing at the edge of a cliff 240 m tall. You throw a ball into the air one directly upward at 5 m/a and another downward at 5 m/s. Use conservation energy to show that they will have the same speed at the bottom. I know I have to do it twice.. And it
asked by Michelle 
math
Mr.Smith's tax on his house for 1965 was $283.79.If the tax rate for that year was $3.835 per $100 of assessed valuation, for what amount was Mr.Smith's house assessed? a. $10.88 b. $74 c. $740 d. $1088.33 e. $7400 please answer and explain
asked by thomas 
algebra
solve the following: 300e^.06x = 1500
asked by Tim 
algebra
{distinct letters in the word food}
asked by charles 
Contrasting East & West
1. In 1938, British Prime Minister Chamberlain declared a final act of appeasement A. after Hitler attacked Poland. B. when Hitler's claim on the Sudetenland was accepted. C. immediately following the Nazi occupation of Austria. D. after Hitler's forces
asked by Rebecca 
math
IF I RAN 3/8 OF A MILE HOW MUCH FURTHER WOULD I HAVE TO RUN TO MAKE A MILE
asked by karen 
Cultural Anthropology
Contrast the four types of subsistence strategies, be sure to include differences in lifestyle, kinship, property, ownership, distribution of resources and division of labor. Thank you!
asked by Eric 
Algebra
solve: Ln(x+2)Ln(4x+3)=Ln(1/x) I think this is a Log of Quotient
asked by Toni 
chemistry
Given that 4 NH3 + 5 O2 4 NO + 6 H2O, if 3.00 mol NH3 were made to react with excess of oxygen gas, the amount of H2O formed would be?
asked by Anonymous 
graphing
(0,2)is the vertex what is the domain and range??? State the domain and range of the function. (Enter your answers using interval notation.)
asked by K 
algebra
Solve: 7 ^(x+3) =519
asked by james 
algebra
I need some help with ln 's I am trying to solve : ln(x+3) ln(x5)= ln7 do I: ln (x+3)/(x5)= ln 7 ?
asked by zach 
logarithim
my problem is as follows: Solve: 3^x2=9^x+4 do I "log" both sides or "ln" both nor either?
asked by Joshua L. 
World History
1. In 1964, a loose union of Palestine refugees led to the formation of the Palestine Liberation Organization (PLO) under Yasir Arafat. What was the aim of the PLO? A. Driving Israel from East Jerusalem B. Establishing a PanArab League C. Evicting Israel
asked by Rebecca 
math
Why 0!=1 Plz help me to prove this statement.
asked by Muhammad 
Chem
422g of ethyne and 190g of acetic acid find balanced equations and enthalpy calculations showing all steps
asked by Julie 
algebra
4(x6)7x
asked by Anonymous 
Algebra
How do you simplify this? 16^(1/4) Someone showed me like this: (1)(16^(1/4))=(1)(2)=2 But others said ... 16^(1/2)= 4i 4i^(1/2) or the sqrt of 4i=sqrt of 4 times sqrt of i Final answer: 2 times sqrt of i What is the correct answer and what exactly do
asked by Anonymous 
Calculus
Use the alternate definition, lim x>a f(x)f(a)/xa, to determine the instantaneous rate of change of f(x)= 1/x at the point (1,1/5) a)1/5 b)1/5 c)1/25 d)1/25
asked by Sarah 
math
john counts backward from 140by twenties and lee counts backward from 120 by tens.how many of the same numbers do they say down to zero? can only body show me how to work out please,thankss
asked by wan 
Calculus
When onesided limits are not equal to each other at a point, what can be said about the continuity of the function at that point? I know that when onesided are not equal to each other then the limit does not exist at that point. but i do not know what
asked by Sarah 
math
Solve 3a=2b+1 3b=5ad
asked by Elimination method 
MATHS  HCF
Find the least number when divide by 25, 45, 60 leaves reminder 20. 2) Find the least number which when divided by 18, 12, 24 leaves a reminder of 16, 10, 22 respectively. Can U help me to find the answer.
asked by RIYA 
English grammar
Who can give me a good explanation with examples for the following conjunction. a) while b) unless
asked by rose 
English
1. Each of us has something to do. 2. We each have something to do.  Do we have to us 'have' in Sentence 2? How come? 3. Do you like the game?  Yes, I like it.  Is 'it' a personal pronoun or a demonstrative pronoun?
asked by rfvv 
English
1. I feel comfortable in myself. 2. I talked out loud of myself. 3. There is a gap between myself.  Are the sentences all grammatical? If not, would you correct each sentence? Thank you.
asked by rfvv 
public speaking
when speaking about abstract concepts, make them concrete ti the audience by?
asked by john 
pre algebra
Check whether (4, 12) is a solution of the system of equations. y = 6x + 12 2x  y = 4 When the graphs of two equations are parallel, there are infinitely many solutions. y = x + 4 y = 3x solution: ( , )
asked by berta 
English
1. The girl dressed herself up for the audition? 2. The girl dressed herself for the audition?  What is the difference between the two sentences? Does 'up' mean 'completely' in Sentence 1?
asked by rfvv 
Algebra
The time required for a trip 108 miles downstream on a steamer is 3 hours less than the time required for the upstream trip. A boat whose rate is 6 miles per hour less than that of the steamer required 9 hours more for the upstream trip than for the
asked by Summer 
College alg.
f(x) = −x2 − 4x − 2 Graph the function. State the Domain and Range
asked by KMILL 
Algebra Word Problem
A number of men subscribed a certain amount to make up a deficit of $100 but 5 men failed to pay and thus increased the share of the others by $1 each. Find the amount that each man paid.
asked by Summer 
Language Arts
" What details support the idea that scientists and everyday citizens have different responses to the rediscovery of the ivorybills?
asked by BMTH!!! Babe 1234 
English
1. You should do it yourself. 2. You should do it itself. Are both grammatical?  3. She must be angry because she's not saying anything. 4. She has to be angry because she's not saying anything. Are both grammatical and commonly used?
asked by rfvv 
Uos
Two horizontal forces, and , are acting on a box, but only is shown in the drawing. can point either to the right or to the left. The box moves only along the x axis. There is no friction between the box and the surface. Suppose that = +2.6 N and the mass
asked by Mariam 
algebra
I am to solve ln(x+3)ln(x5)=ln7
asked by joanie 
Physics
Two forces FA and FB are applied to an object whose mass is 9.53 kg. The larger force is FA. When both forces point due east, the object's acceleration has a magnitude of 1.43 m/s2. However, when FA points due east and FB points due west, the acceleration
asked by Mariam 
Hanus
points Q (10,8) and R (24,10) are the endpoints of a diameter of a circle centered at P. Line l is tangent to the circle at S (12,14). What is the yintercept of line l?
asked by Christina 
health
What is the Affordable Care Act? A. A program that allows people who are at higher risk for chronic diseases to gain free memberships to gyms and fitness facilities. B. A program that allows people who are at lower risk for chronic diseases to gain free
asked by anthony 
astronomy
Before Dark Energy could be discovered, several preconditions needed to be in place. Tick all the factors below which were necessary for the discovery of dark energy. 1. Large format detectors for wide field imaging 2. Radio interferometers 3. Large
asked by keitanako 
programming
create a c++ code that will set first the number of the student to be entered then get the name and their grades, After that display the name, grades & remarks of the student using arrays
asked by fede 
health
Signs of a sleep disorder include? A. Trouble staying awake during the day B. Pauses in breathing during sleep C. Both A and B D. Coughing and sneezing
asked by anthony 
health
A person should not drink at all if he or she is: A. 21 and over B. Jobless C. Breastfeeding D. None of the above I got D
asked by anthony 
trig
Given angle x, where 0
asked by John 
trig
Given angle x, where 0
asked by John 
algebra
Estimate the real zeros of the function to the nearest tenth f(x) = 2x^2 − 3x − 7
asked by K.M 
Statistics
Daily output of Marathon's Grayville, LA, Refinery is normally Distributed with a mean of 232,000 barrels of crude oil per day with a standard deviation of 7,000 barrels. a. what is the probability of producing at least 232,000 barrels? b. between 232,000
asked by Lindsay 
Quick Question
I am trying to find an online radio podcast that middle school students can use to host their own radio show. Can you help me research some?
asked by Max 
Science
Problem: What are parts of a cell and how are animal cells different from plant cells? Hypothesis: Can someone help me get a hypothesis?
asked by Anonymous 
algebra
Solve: log x + log(x+15)=2
asked by james 
algebra
write in expanded logarithmic form: ln (x y^3 z^7)
asked by james 
Physics
A cannon launches a ball with the initial speed of 210 m/s at a 70 degree angle. 1. How high will the cannonball go? 2. If the cannonball has a mass of 25kg how much work does it take to launch the cannonball to that height?
asked by Michelle 
algebra
Evaluate: log base 5 379
asked by Tim 
algebra
solve: log base of 7 (3x+2)=5
asked by Seth 
algebra
Solve the following: 3ln(4x)=17
asked by Seth 
orgo chem
how much acid will remain after 3 extractions with 1.0 mL of ether of 50mg butanoic acid, 5mL water?
asked by Gina 
IB English
IT IS END OF THIRD QUARTER AND MY IB ENGLISH GRADE IS A B!!!! MY GOAL WAS TO GET AN A BUT...... ****IF GET AN A ON THE FOURTH QUARTER, WILL MY GPA GO UP!!! I GOT A'S ON ALL OF THE OTHER CLASSES EXCEPT IB ENGLISH......... ***********SO WOULD MY GPA BUMP
asked by Anonymous 
Am. History
As there was after World War II, there is a legitimate threat to Americans and the American way of life in the Post 9/11 world. Senator McCarthy used his influence to weed out suspected Communists from the American government. Are there any lessons to be
asked by Lib 
Food and Nutrition
Children's Parties The stage 'children (ages 412 years) Relationship between nutritional needs and:  physical challenges emotional challenges social challenges THESE RELATIONSHIPS REGARDING CHILDREN AT PARTIES AND FOOD.... i just need some points..
asked by Lisa 
Math
how many 5's are in 6
asked by Anonymous