Questions Asked on
April 5, 2018

Chemistry
Al(s) + MnO2(s) → Al2O3(s) + Mn(s) When this reaction is balanced, how many electrons are transferred in each halfreaction? The answer I got is 3*2=6. Is this correct?
asked by Summer 
English
1. The concert is over. 2. The concert is finished. 3. The concert ended. 4. The concert finished. [Are they the same in meaning? Can we use all the sentences? Which ones are unacceptable? Do you have some more similar expressions?]
asked by rfvv 
physics
A 2kg object moving 3m/s strikes a 1kg object initially at rest. Immediately after the collision, the 2kg object has a velocity of 1.5m/s directed 30° from its initial direction of motion. What is the x and y component of the velocity of the 1kg object
asked by Anonymous 
Physics
If you disconnect the wires from the battery and then reconnect them at the opposite ends of the battery, how does that change the direction of the charge flow? The direction of the charge flow is the same as the question The direction of the charge flow
asked by Max 
AP Economics
Why might inflation accelerate as the unemployment rate declines?
asked by Eggbert 
math
determine the product 800.5*(2*10^6)
asked by s 
Math
Increase $980 by 5% and then decrease the result by 5%. Calculate the overall percentage loss
asked by Nan 
science
The concentration of H2SO4 in a bottle labelled "concentrated sulphuric acid" is 18M what does it mean
asked by ganga bagirathi 
Physical
A truck moves 60 kilometers east from point A to point B. At point B, it turns back west and stops 15 kilometers away from point A. What are the total distance and total displacement of the truck? A.The total distance is 105 kilometers, and the total
asked by jaden 
career planning
Dogs with long hair become popular. Jobs in pet grooming will a. be created b. be eliminated c. be moved to somewhere else. d. be done differently I know it's not b or c but I can't decide between a and d. People buy more electric cars to stop pollution.
asked by huncho jack 
English
1. We are at my cousin's school. 2. We are in my cousin's school. [Can we use both prepositions?] 3. He plays his violin on stage. 4. He plays his violin on the stage. [Are both correct? Which one is commonly used?] 5. I move in my seat. 6. I move on my
asked by rfvv 
English
1. I laugh. Don't laugh, I tell myself. Think of tomorrow's math test. That works. I sit quietly.  In the book, 'Don't laugh' is in italic type. In the book 'Think of tomorrow's math test.'is in
asked by rfvv 
Math
It is impossible to measure the length of a particular swamp directly. (Snapping turtles!!) Kendra put a stake in the ground and measured from the stake to opposite ends of the swamp, the results being 410 m and 805 m. She measured the angle between the
asked by T 
history
Which laws called for strict separation of the races in the South? (1 point) antidiscrimination laws Plessy v. Ferguson laws Jim Crow laws ***** boycott laws 2. Civil rights activists targeted segregation in interstate transportation (1 point) because
asked by helga 
Science PLEASE HELP ASAP
Why is photosynthesis an example of a chemical reaction, and why is it classified as endothermic?
asked by Rodeo~Babe 
Precalculus 11
Hello, An airplane makes a 990 km flight with a tailwind & returns, flying into the same wind. The total flying time is 3 hrs 20 mins & the airplanes speed in still air is 600 km/hr what is the the speed of the wind? I'm as far as
asked by Kayla 
Chemistry
For H2SO4 + 2NaOH = 2H2O + Na2SO4 n(H2SO4) = 9.65g/98g/mol = 0.098 n(NaOH) = 6.10g/40g/mol = 0.15 mol 1 mole of H2SO4 is = to 1 mole of Na2SO4. H2SO4 yields 0.098 mol of Na2SO4. 2 moles of NaOH is = to 1 mole of Na2SO4. NaOH yields 0.076 moles of Na2SO4.
asked by Anonymous 
Math
The length of a room is 9 metres.It's floor is tiled by using 96 square tiles of 0.75 X0.75 m each. What is the breath of the room?
asked by Unnav 
Science
Two closed vessel A and B of equal volume containing air at pressure P1 and temperature T1 are connected to each other through a narrow open tube.If the temperature of one is now maintained(where T1>T2) then that what will be the final pressure of air
asked by Sucheta 
LA
"Life Without Gravity" considers the advantages and the disadvantages of weightlessness. In a paragraph, name two of the advantages and two of the disadvantages. Then, state your opinion of space travel. If you had the opportunity to travel in space, would
asked by Mister Max 
Geometry
What are the values of the variables in the triangle below? If your answer is not an integer, leave it in simplest radical form. The diagram is not drawn to scale. 30, y, x, 8sqrt3 A x=12sqrt3 y=4**** B x=4 y=12sqrt3 C x=4sqrt3 y=12 D x=12 y=4sqrt3 Help
asked by Excited (Corrected) 
Chemistry
What is the net ionic equation for the neutralization of CHOOH with NaOH?
asked by Jessica 
physics
A 2kg object moving 3m/s strikes a 1kg object initially at rest. Immediately after the collision, the 2kg object has a velocity of 1.5m/s directed 30° from its initial direction of motion. What is the x and y component of the velocity of the 1kg object
asked by Anonymous 
AP Chemistry please help!
Glycerol (a nonelectrolyte that can be used as antifreeze and coolant in a car radiator) has a density of 1.261 g/mL and a molecular weight of 92 g/mol. If 111 mL of glycerol are mixed with 5.1 kg of water, by how much would the boiling point of the
asked by Kayla 
AP Chemistry please help!
Glycerol (a nonelectrolyte that can be used as antifreeze and coolant in a car radiator) has a density of 1.261 g/mL and a molecular weight of 92 g/mol. If 111 mL of glycerol are mixed with 5.1 kg of water, by how much would the boiling point of the
asked by Anonymous 
APUSH
How did mechanization impact manufacturing labor in the short term? How will it impact society in the long term? This is during the cold war.
asked by altaif 
AP Statistics
Italian gamblers used to bet on the total number of dots rolled on three sixsided dice. They believed the chance of rolling a nine ought to equal the chance of rolling a total of 10 since there were an equal number of different ways to get each sum.
asked by Eggbert 
AP Statistics
The game ChuckALuck is played as follows: A player bets $M on an integer chosen from 16 and then rolls three dice. If the number appears on exactly on die, then the player wins the amount bet. The player wins twice the amount bet if the umber appears on
asked by Eggbert 
History
Mrs.Sue, I have completed three questions of the four. May you check them? I do not need help on the fourth one because my teacher still has to give us a booklet with the information and etc... I replied to the post that I posted: yesterday at 3:21pm
asked by Sarah 
English
1. I hit the chair in front of me. 11. I hit the chair in front of myself. 2. I hit the chair before me. [They are okay. They are the same. By the way, do you use #11? A reflexive pronoun is used here.] 3. I hit the chair in back of me. [O] 4. I hit the
asked by rfvv 
Physics (HELP)
An object inside of the focal point of a concave mirror produces an image that is...
asked by Lance 
Physics
A proton moves in a constant electric field E from A to pointB. The magnitude of the elctric field is 4.2x10^4 n/c; Thedirection opposie to that of the proton. If the distance from pointA to point B is 0.18m, what is the change in the proton's
asked by Kat 
maths
a formula for changing temperature to Fahrenheit from Celsius is f = 1.8C +32 work out the Fahrenheit when it is 30 degrees Celsius
asked by lbony 
Physics (HELP)
When light goes from a medium that is less dense to a medium that is more dense, the angle of the refraction is greater than the angle of the incidence
asked by Lance 
Pre calculus
Sales of a video game released in the year 2000 took off at first, but then steadily slowed as time moved on. The table below shows the number of games sold, in thousands, from the years 2000–2010. Year 2000 2001 2002 2003 2004 2005 Number Sold
asked by Anonymous 
Chemistry
What is the element whose d sublevel is filled and its highest energy electron has the set of quantum numbers: n=4, l=0, ml=0, ms=+1/2
asked by Ceamus Angelina 
Physics (HELP)
The index of refraction of diamond is 2.42. What would be the speed of a light wave passing through a this medium? 8.1 x 10 ^9 m/s 1.2 x 10^8 m/s 7.3 x 10^8 m/s 9 x 10^9 m/s
asked by Anonymous 
Physics (HELP)
A converging lens is thicker at the center of the lens than the edges. True False
asked by Anonymous 
chemistry
How is ambient energy relative to whether a reaction is spontaneous?? Does Exothermic reaction that is selfsustaining not have any ambient energy? I don't know but if there is a higher amount of ambient energy is the reaction spontaneous? I don't think a
asked by Anonymous 
Physics
What is Bernoulli's principle? Use Bernoulli's principle to explain how one of the following works: an airfoil, a curve ball, the wind blowing the roof off a house.
asked by Morgan 
Science
Briefly describe Pretreatment, Primary Treatment and Secondary Treatment for municipal wastewater.
asked by Andrea 
7th grade math
Without looking, Tammy takes a marble out of a bag that contains 10 red marbles, 15 green marbles, and 25 blue marbles. She records its color and returns the marble to the bag. If Tammy repeats the proess 90 times, how many times can she expect to pull a
asked by please answer ASAP 
US History
What's the difference between a conservative African American and liberal African American in the context of civil rights leaders
asked by Anonymous 
Physics
Imagine that a person is holding a basket of baseballs, and is throwing them at you, a helpless person without a baseball glove, with a speed of 10m/s, every two seconds. Assume you are a distance of 50m away. A. How long will it take until you get hit
asked by Faoruk 
Social Studies
What is the importance of the G.I. Bill? a. It gave returning soldiers employment in factories b. It provided free tuition for returning soldiers*** c. It helped give African Americans an equal education to whites d. It allowed more people to attend
asked by Anonymous 
Chemistry
Study the two half reactions of an electrochemical cell. Ag(s) → Ag^+(aq) + e^– E^0 = 0.80 V Cu(s) → Cu^2+(aq) + 2e^– E^0 = 0.34 V Which option correctly gives the standard cell potential of Ag^+(aq) + Cu (s) → 2Ag(s) + Cu^2+(aq) reaction? The
asked by Summer 
early child ed
Is it true that some preschools assign homework now?
asked by Anonymous 
geography
What is the capital of Australia? Is Canberra the correct capital or is it Sydney ? I'm confused because it seems like sydney is the capital to one part..... Any help is appreciated . Thanks
asked by Anonymous 
Physics
The direction of an Electric Field is the direction a negative test charge will move in the field a positive test charge will move in the field either a positive or a negative test charge will move in the field*** the test charge may be either negative or
asked by Max 
AP Physics
If Blemons leaves his classroom at 12 mph and Mrs. Naylor is stomping toward him at 60 mph, at what force will the two of them crash into each other.
asked by Eggbert 
Politics
I'm prolife change my mind
asked by Acevedo 
Chemistry
A solution is 0.20 M in Cd2+ and 0.20 M in Ca2+. NaOH solution is added slowly through a burette. Ca(OH)2 (s) Ca2+ (aq) +2OH (aq) Ksp= 5.5*10^6 Cd(OH)2 (s) Cd2+ (aq) +2OH (aq) Ksp= 2.5*10^14 Calculate the concentrations of hydroxide ion, calcium ion, and
asked by Sally 
AP Statistics
I really need help on this question. When dealing out a game of thirteen, what is the probability of getting an instawin. This of course includes a bomb of 2s, a 12 long straight, and any other instawins that are present in the game. Please answer
asked by Eggbert 
APUSH
What transformations in women’s economic role took place in the 1950s60s?
asked by altaif 
Math
Sales of a video game released in the year 2000 took off at first, but then steadily slowed as time moved on. The table below shows the number of games sold, in thousands, from the years 2000–2010. Year 2000 2001 2002 2003 2004 2005 Number Sold
asked by Rachel 
APUSH
Explain the ways traditional American identity and values were challenged in the postwar era? The war they're talking about is World War Two.
asked by altaif 
math
NEED HELP the combines volume of all the tanks at an aquarium is 1.25*10^6 gallons. the aquarium plans to install a new dolphin tank with a volume of 250,000 gallons. what will be the total volume of all the tanks at the aquarium after the new dolphin tank
asked by s 
msth
the mass of earth is 5.97*10^24 kilograms the mass of the moon is 7.34 *^22 kilograms what is the combines mass of earth ad the moon. express your answer in scientific notation
asked by s 
PreCalculus
A mechanic applies a force of 42 Newtons straight down to a ratchet that is 0.59 meters long. What is the magnitude of the torque when the handle makes a 38 degree angle above the horizontal?
asked by Sa 
math
a lab has two bacteria cultures. culture a contains 8*10^4 bacteria, and culture B contains 4*10^6 bacteria. how do the two cultures compare in size?
asked by s 
Physics
A 75 kg laboratory technician working with the radioactive isotope 137Cs receives an accidental 100 mrem exposure. 137Cs emits 0.66 MeV γray photons. a) How many γ ray photons are absorbed in the technician’s body? b) How many rad of alpha radiation
asked by Abdul 
math
in a recent survey of middle school students about pizza toppings, it was found that 25 students like pepperoni pizza, 31 like banana peppers pizza, and 5 likes both pepperoni and banana peppers on their pizza. if 66 students were surveyed, how many
asked by lol 
Math
What is the difference between discrete and continuous data?
asked by Hamy 
math
Find the sum (assume x < 1/3): 1+3x+9x^2+27x^3+81x^4+...=?
asked by natalie 
math
Find the area of the figure. Round to the nearest tenth if necessary. L(3,6), M(7,3), N(6,1), J(2,1), K(3,3)
asked by Jonathan 
AP English
In his famouse quote "to be or not to be" what is Hamlet referring to? Does Hamlet exhibit signs if mental instability in the story?
asked by Hieu Phan 
Physics (HELP)
A real image is usually inverted, but can be upright in special cases. True or false?
asked by Lance 
General
Hello. I'm kinda new to this site. Is there any restriction on the kinds of questions we are allowed to ask. I have a lot of homework due tomorrow and I don't really feel like doing it all. Lol. Please respond because I want to respect the website's
asked by Eric Vallecillo 
Science
For my science experiment, I am testing 3 people's typing speeds with 5 different instruments each. How do I find the best instrument that they improved on the most, even though each person has a different instrument that they improved on the most?
asked by Nyx 
Programing
Using the if… else if, write a menudriven program that permits the user to select one of the metric conversions: Lengths Weights Volumes Areas Use the following conversions: For Length: Inches to centimeter (1 inch = 2.54 cm) Yards to meters (1 yard =
asked by Samuel 
math
can someone please help me i am lost. S this is kind of like your problems i can help you and you can help me *** the speed of the light in a vacuum is 299,792,458 meter per second which number, written in scientific notation, is the best approximation of
asked by jas 
English
1. If we don't go to school, we go to academies. 2. If we don't go to school, we go to an academy. 3. If we don't go to school, we go to academy. 4. If I don't go to school, I go to academies. 5. If I don't go to school, I go to an academy. 6. If I don't
asked by rfvv 
Algebra
Solve for n N/5 + n/4= 1/2
asked by Chey 
Math
The raw data below represents the number of children living at home in a neighborhood of 24 homes. Which measure best describes the data: mean, median, or mode? Calculate all and explain. 2,1,3,0,4,4,1,2,0,6,2,2,5,0,2,3,3,1,1,4,2,0,1,4
asked by Asa 
Math
Matt got a dollar on his birthday. On his second birthday he will get the amount from last year's birthday plus as many dollars as he is old. How much would he receive on his birthday when 12 if this pattern is used. I came up with $78 is this right
asked by Kathy 
MATH
which expression is not equivalent to 1/343 7^4 * 7^7 7^7 * 7^10 7^2 * 7^5 7^5 * 7^2
asked by jas 
Biology
Chordate (not a primate) •Explain how body plan and anomoty enables chordate to perform the essential functions it needs to survive. •Explain how your chosen chorodate fonts into the cladogram of chordate.
asked by Help me 
Statistics
Suppose x is the waiting time at a bank, which is a random variable that is uniformly disturbed on values between 0 and 20 minutes. Find the probability that the waiting time is between 5 and 10 minutes.
asked by Joshia Norman 
Chemistry (redox reaction)
Which reaction is a redox reaction? 1. HCI+H2O=H3O^+ +CI^ 2. H2SO4+2KOH=K2SO4+2H2O 3. CH4+2O2=CO2+2H2O 4. Fe^2+ +2OH^ =Fe(OH)2 I chose number 3, is this correct?
asked by Summer 
Algebra
Determine all roots of the function: f(x) = 10x(x^2+4x+3)
asked by Bob Ross 
Statistics
A psychologist studied the time x (in seconds) it took a subject to complete a pencil and paper maze while in the presence of a floral scent. Suppose x has a normal distribution with mean 70 seconds and standard deviation 15 seconds. Find P(X
asked by Joshia Norman 
Science until 7 I Need help
An organisms genotype is It physical appearance It combination of alleles The mutation it inherits The crossing over that occurs during meiosis.
asked by Bre 
science
How much energy is required to lift a 40.00 kg bag of sand 1.02 m
asked by Bethany 
Calculus
A function has f''(x) = 10 and has f'(4) = 0 and f(2) = 4. Find f(x).
asked by Faisal 
Math
Sales of a video game released in the year 2000 took off at first, but then steadily slowed as time moved on. The table below shows the number of games sold, in thousands, from the years 2000–2010. Year 2000 2001 2002 2003 2004 2005 Number Sold
asked by Anonymous 
BiologyASAP Bob Pursley to the resuce?
a)The blank is the probability of erroneously rejecting the null hypothesis.I said level of significance, is that correct? b)If you P value is 0.05. Does that mean that 95 times out of 100, the null hypothesis will be falsely rejected (I feel like it
asked by Labub 
Math
. A school has conducted an exam for the 8th grade and published the results in the table. Find the measure of the central angle that would represent the percent of students who took German in the 8th grade.
asked by karl 
Statistics
A psychologist studied the time x (in seconds) it took a subject to complete a pencil and paper maze while in the presence of a floral scent. Suppose x has a normal distribution with mean 70 seconds and standard deviation 15 seconds. Find P(X
asked by Joshia Norman 
School
I don't understand this question? List some of the issues facing our society related to marriage, divorce and living together without legal paperwork.
asked by Betty 
AP Calculus
HELP! I'm in calculus class and they keep talking about Taylor series. I don't understand what's going on. Please explain what is Taylor series and what is Mclaurin series and how they are similar and how they are different.
asked by Marvin Gay 
Chemistry
In H2SO4 + 2NaOH = 2H2O + Na2SO4 How much of the excess reagent will remain after the reaction has been completed? I know that NaOH is the limiting reactant
asked by Anonymous 
Geometry
What are the values of the variables in the triangle below? If your answer is not an integer, leave it in simplest radical form. The diagram is not drawn to scale. 30 y x 8sqrt3 A x=12sqrt3 y=4**** B x=4 y=12sqrt3 C x=4sqrt3 y=12 D x=12 y=4sqrt3 Help
asked by Excited 
chemistry
H2O2 + KI = I2 + KOH IS this correct for a redox reactions? what does H2SO4 + Sugar turn into? from a redox reaction standpoint?
asked by Anonymous 
Math
Display each data set in either a line plot, histogram, or stemandleaf plot. Kilometers driven: 132, 11, 95, 111, 108, 94, 124, 113, 125, 95, 110, 115, 122, 107, 99, 115, 121, 133, 118, 114 Weight of lions: 440, 425, 452, 433, 445, 436, 440, 475, 426,
asked by Risha 
math
i have 1,221 cookies and i have 7 friends, how many will each friend get?
asked by cameron 
math
Khalil took a train from San Francisco to San Jose, which is a distance of 54 miles. The train took 45 minutes for the trip. what was the average speed of the train expressed in miles per hour?
asked by Anonymous 
math
Dmitri wants to cover the top and sides of this box with glass tiles that are 1 cm square. How many tiles will he need?
asked by cameron 
Math 6th Grade
Can someone please help I been trying to figure this out for a long time and you guys help me? 2. Which of the following is a true statement? (1 point) A.) –2 < 1 *** My answer B.) 1 < 0 C.) –1 < –2 D.) 1 > –2*** My answer (but
asked by Swimmer 
Social Studies
How did the spoils system affect president James Garfield and his successor Chester A. Arthur
asked by Someone plz help ASAP 
math
If 5% of xy, then 10% of 2x equals ............
asked by Anonymous 
Physics
What takes more energy to raise its temperature by one degree, water or ice? Thanks!
asked by Nancy 
Physics
What is the latent heat of fusion of ice to water? Help pls!!!!!
asked by Anna.L 
Physics (HELP)
The critical angle is the angle at which a ray of light is no longer refracted but completely reflected. True or false?
asked by Lance 
Physics (HELP)
If light travels through a medium at a speed of 1.987 x 10^8 m/s, what is the index of refraction of the medium? 1.33 1.36 1.51 1.53
asked by Annonymous 
Physics
What is a buoyant force? Be sure to give and explain an example.
asked by Morgan 
Physics
An RLC series circuit has a 2.60 Ω resistor, a 110 µH inductor, and a 70.0 µF capacitor. (a) Find the circuit's impedance (in Ω) at 120 Hz. (b) Find the circuit's impedance (in Ω) at 5.00 kHz. (c) If the voltage source has Vrms = 5.60 V, what is
asked by EMG 
Physics (HELP)
If light travels through a medium at a speed of 2.2 x 10^8 m/s, what is the index of refraction of the medium? 1.33 1.36 1.46 1.51
asked by Anonymous 
Math
find the constant of proporionality and the unit rate for the data in the table. Then write an equation to represent the relationship between time t and distance d. Time(hours) Distance(miles 2 90 3 135 5 225 6 270 I need help asap i'm in connexus its a
asked by Lily 
Geometry
Viola drives 200 meters up a hill maing a 9 degree angle with the horrizontal. What horizontal distanmce has she cover. To the nearest tenth meter. 1,262.8m 200.4m 197.5m 31.3m***
asked by AHa 
Physics (HELP)
Lenses can be either converging or diverging. True False
asked by Anonymous 
Physics (HELP)
An object placed in front of a converging lens between the focal point and the center of curvature, produces an image that is… Magnified, real, and upright Magnified, virtual, and upright Magnified, real, and inverted Demagnified, virtual, and upright
asked by Anonymous 
Chemistry
A sample of a new plant food, "super gro", was analyzed. Determine the amount of grams of P and P2O5 as well as the percentage of P2O5 in a sample of "super gro". Mass of plant food sample: 12.50 grams Mass of MgNH4PO46H2O recovered: 8.93 grams
asked by Justin 
Math
Determine the expotential growth equation from the following table? Year 2007: 1.6 million subscribers Year 2008: 2.7 Year 2009: 4.4 Year 2010: 6.4 Year 2011: 8.9 Year 2012: 13.1 Year 2013: 19.3 Year 2014: 28.2 Year 2015: 38.2 Year 2016: 48.7 A. What is
asked by Rachel 
Science
Describe 2 events in human history and in what way the events allowed human populations to grow and thrive.
asked by Andrea 
Science
Describe 3 air pollutants and the troposphere to include the effects of the pollutants on the environment.
asked by Andrea 
Science
Why is Mercury a hazard in the environment?
asked by Andrea 
Social Studies
What is the importance of modern business in Georgia? (2 points) a. They are always found in shopping centers. b. They are always in finance and insurance c. They drive Georgia's economy*** d. They provide jobs***
asked by Anonymous