Questions Asked on
November 6, 2010

Chemistry...Help!!
I don't even know how to start this...The valence electron configurations of several atoms are shown below. How many bonds can each atom make without hybridization? 1. Si 3S2 3P2 2. P 3S2 3P3 3. F 2S2 2P5
asked by Stacy 
AP CALC
Two roads intersect at right angles. At a certain moment, one bicyclist is 8 miles due NORTH of the intersection traveling TOWARDS the intersection at a rate of 16 miles/hour. A second bicyclist is 10 miles due WEST of the intersection traveling AWAY from
asked by Nel 
Algebra
Mattie Evans drove 250 miles in the same amount of time that it took a turbopropeller plane to travel 1250 miles. The speed of the plane was 200 mph faster than the speed of the car. Find the speed of the plane
asked by MARIAH 
chemistry
What is the lewis dot structure of IF2?
asked by Mely 
AP CALCULUS
A girl is flying a kite at a height of 320 ft. If the wind blows the kite horizontally at a rate of 15 feet per second away from the girl, at what rate is the girl releasing the string when the length of the string is 400 ft? [kite]
asked by Naz 
Physics
A 5.00 g object moving to the right at +20.0 cm/s makes an elastic headon collision with a 10.0 g object that is initially at rest. (a) Find the velocity of each object after the collision. 5.00 g object cm/s 10.0 g object cm/s (b) Find the fraction of
asked by Anonymous 
English
"Reason your sympathies lean as they do" I'm trying to complete a chart. Can somebody explain what this means.
asked by Christian 
Math  derivatives of cos and sin fucntions
a) Find an equation of a line that is tangent to y=2sinx and whose slope is a maximum value. b) Is there more than one solution? Explain.
asked by Farah 
Physics
A 25 kg child bounces on a pogo stick. The pogo stick has a spring with spring constant 2.0*10^4 N/m. When the child makes a nice big bounce, he finds that at the bottom of the bounce he is accelerating upwards at 9.8 m/s^2. How much is the spring
asked by mike 
Chemistry
The chemical bond between which two atoms is most polar? (1) C–N (3) S–Cl (2) H–H (4) Si–O How do you find out?
asked by danny123 
French
Translate the sentence you see in to French. We see you. (familiar) Smart Text Plain Text HTML Preview Question 2 2 points Save Which of the following sentences is the sentence you see below, with a direct object pronoun replacing the direct object noun?
asked by Jazmine 
spanish
Rewrite the following sentences replacing the underlined direct object with a direct object pronoun. Remember, the direct object pronoun needs to be placed directly in front of the conjugated verb. The following is an example: Example: Sara come una
asked by whitney 
chemistry
Sulfur forms the following compounds with chlorine. Identify thetype of hybridization for the central sulfur atom in each compound. SCl2,SCl6,SCl4 a. sp b. sp2 c. sp3 d. sp3d e. sp3d2
asked by Mely 
chemistry
A molecule with the formula AB(3) has a trigonal planar geometry. How many electron groups are on the central atom (A)?
asked by Mely 
12th grade
Wheat is falling from a chute onto a level floor at a rate of 8pi ft3/min to form a conical pile. If the height of the pile is always equal to the radius of its base, at what rate is the radius increasing when the pile is 8 ft deep?
asked by Nazish 
multiple choices
Which of the following is accelerating? An object moving with a constant velocity. An object moving along a curve. None An object moving on a straught line with a constant speed.
asked by meera 
maths
The fifth term of a linear sequence is 17 and the third term is 11, Find the sum of the first seven terms
asked by DeGraft 
physics
A Ferris wheel with radius 14.0 m is turning about a horizontal axis through its center as shown in the figure. The linear speed of a passenger on the rim is constant and equal to 7.0 m/s. What are the magnitude and direction of the passenger's
asked by meera 
Chemistry
A compound has the empirical formula CHCl. A 256 mL flask, at 373 K and 750. torr, contains 0.800 g of the gaseous compound. Give the molecular formula.
asked by Justin 
Geometry
what is the supplement of B if B=(3x16)?
asked by Karen 
chemistry
The following reaction consumes 2.15 kg of Co(g): Co(g) + H2O(g) > CO2(g) + H2(g) How many total liters of gas are formed if the products are collected at STP?
asked by amy 
economics
Gamma Corporation, one of the firms that retains you as a financial analyst, is considering buying out Beta Corporation, a small manufacturing firm that is now barely operating at a profit. You recommend the buyout because you believe that new management
asked by robbie 
math
Which triangle, PQR or FGH, seems similar to triangle ABC? Why?
asked by jacko 
Algebra II
Solve for n, N=(n^29n)/20
asked by Patricia 
science
1.In a device like the one shown below, the cylinder is allowed to fall a distance of 300 m. As a result, the temperature of the water increases by 2.7°C. What would have been the increase in temperature if the cylinder were only allowed to fall 100 m
asked by jana 
math
a baseball team buys 15 bats for $405. aluminum bats cost $25 and wooden bats cost $30. how many of each type did they buy? Please show work
asked by dave 
Physics
1. A stroboscopic photo of a club hitting a golf ball, such as the photo shown in Figure 6.3, was made by Harold Edgerton in 1933. The ball was initially at rest, and the club was shown to be in contact with the club for about 0.0022 s. Also, the ball was
asked by justin 
Chemistry
A 1.00L gas sample at 100.°C and 611 torr contains 50.0% helium and 50.0% xenon by mass. What are the partial pressures of the individual gases?
asked by Anonymous 
chemistry
A 10.0L stainless steel container was charged with 2.00 atm of hydrogen gas and 3.00 atm of oxygen gas. A spark ignited the mixture, producing water. What is the pressure in the tank at a constant temperature of 25°C?
asked by Anonymous 
Physics
A hydraulic lift has two connected pistons with crosssectional areas 25 cm2 and 390 cm2. It is filled with oil of density 530 kg/m3. a) What mass must be placed on the small piston to support a car of mass 1500 kg at equal fluid levels? kg HELP: The
asked by Kimbo 
Physics
I just need help with c A long horizontal hose of diameter 4.2 cm is connected to a faucet. At the other end, there is a nozzle of diameter 2 cm. Water squirts from the nozzle at velocity 24 m/sec. Assume that the water has no viscosity or other form of
asked by Chris 
geometry
If DE=4x+5 and GJ=3x+25, what is DE
asked by sarah 
SciencePhysics
Why is time often referred to as a time interval in science? Time is often referred to as a time interval in science because that way its emphasized that time is a furation.
asked by Anonymous 
chemistry
Calculate the theoretical amount of CaCl2 that would be required to change the temperature of 50 mL of water from from temperature 20 degrees Celsius to 45 degrees Celsius. Remember that the heat lost during the dissociation is equal to the heat gained by
asked by Pat 
physics
suppose you exert 150N on your refrigerator and push it across the kitchen floor at constant velocity. a. is the friction force equal and opposite to your 200N push? explain b. does the friction force make up the reaction force to your push?
asked by brittney 
physics
suppose you exert 150N on your refrigerator and push it across the kitchen floor at constant velocity. a. is the friction force equal and opposite to your 200N push? explain b. does the friction force make up the reaction force to your push?
asked by lindsey 
unterstanding operating systems
Given that main memory is composed of three page frames for public use and that a sevenpage program (with pages a,b,c,d,e,f,g) requests pages in the following order: a,b,a,c,d,a,e,f,g,c,b,g
asked by ts 
Chemistry
Sea water conducts electricity. Which statements give the best explanation for this a) Ions are able to move around in sea water b) Electrons can pass from ion to ion in the sea water c) The sea water contains more ions with positve charges than ions with
asked by peter 
Math
The Chavara family buys a house for $225,000. They pay $50,000 down and take out a 30year mortgage on the balance. Find their monthly payment and the total amount of interest they will pay if the interest rate is 6%.
asked by lynne 
chemistry
What is the balanced equation for sodium bicarbonate + sulfuric acid producing carbon dioxide + water + sodium sulfate and sodium bicarbonate + hydrochloric acid producing carbon dioxide + water + sodium chloride. Also are these two the correct word
asked by Anonymous 
6th grade fractions
What does manipulative mean?? Which fraction manipulative covers 1/2 of 1/3 ?
asked by Suzanne 
ALGEBRA
Hi. I have the answer and have worked this out. I just want to make sure I'm correct. I must solve using addition and multiplication principles. 8x + 2 7x (greater then or equal to sign here) 14. I know I am to collect like terms first so, 1x+2 = 14;
asked by Jessica 2 
AP Chem
A student conducts an experiments to determine the enthalpy of neutralization for phosphoric acid reacting with sodium hydroxide. The student combines 25.0 mL of equimolar solutions of acid and base, both having an initial temperature of 22.5 degree C, in
asked by Beth 
Chemistry
What is the frequency of light having a wavelength of 360 nm?
asked by kevin 
Five Number Summary
In the list of five measurements shown below, one is blurred. What must this value be, if the mean of the five measurements is 6? 8 5 10 3 #.
asked by Renee 
physics
A steel ball is tossed into the ocean and comes to rest at a depth of 2.40 km. Find its fractional change in volume, assuming the density of seawater is 1020 kg/m3.
asked by john 
math
What is .67 and .375 equal in percent?
asked by Elijah 
math
What are the matrix used for?
asked by katy 
science
What is the net force of a 4.0N force and 8.0N force acting on an object in opposite directions?
asked by leisha 
science
What is the net force of a 4.0N force and 8.0N force acting on an object in opposite directions?
asked by leisha 
english
Rewrite sentence, including any punctuation. I counted one hundred seventysix CDs on the shelves next to the fireplace.
asked by victorline 
people
1. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on Earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation: , where
asked by Anonymous 
physics
A 0.105 kg baseball is thrown upward with an initial speed of 12.0 m/s. (a) What is the force on the ball when it reaches half of its maximum height? (b) What is the force on the ball when it reaches its peak?
asked by Tim 
math
what is.007 in perent because i got 700%
asked by mario&luigi 
us history
I'm doing a mock trial defending Andrew Jackson being impeached. He is being indicted for violating states' rights in his dealings with South Carolina in the nullification crisis. I'm finding it extremely hard to find any info to form reasons to defend
asked by Michelle 
world geography
What has the United States and Canada done about destructive algae around Lake Erie since the 1970's?
asked by Anonymous 
Cal
How do you find the implicit differentiation of 2/x + 2/y = 5?
asked by Anonymous 
Physics
River Dam generates electricity with water taken from a depth of 110 m and with an average flow rate of 740 m3/s. a) Calculate the power in this flow. Note that the velocity and height of the water are not changed appreciably by the generators, and the
asked by Slice 
Physics
How much pressure is exerted by a 5000 pound moving vehicle vehicle (hehicle is 6' x 12')?
asked by Barry 
chemistry
The following reaction consumes 2.15 kg of CO(g): CO(g) + H2O(g) > CO2(g) + H2(g) How many total liters of gas are formed if the products are collected at STP?
asked by amy 
US History
What were some alternatives to using the atomic bomb against Japan? Would any of these alternatives have been better than the action taken? I have to write an essay on this, so can I please get some good links? Thanks! MC
asked by mysterychicken 
Physics
When physicians diagnose arterial blockages, they quote the reduction in flow rate. If the flow rate in an artery has been reduced to 30% of its normal value due to plaque formation, and the average pressure difference has increased by 40%, by what factor
asked by Sal 
Calculus 1
How do you find dy/dx by implicit differentiation? x^3 + y^5 = 1
asked by Anonymous 
Precalculus
Write the given expression as a single logarithm. log(70x)+log(10y)2
asked by Anonymous 
bio
How does polyandry affect fitness in bluethroats and pseudoscorpions? How does monogamy affect fitness in California mouse and spotless starling?
asked by Anonymous 
Physics
Masses m1 = 4.00 kg and m2 = 9.00 kg are connected by a light string that passes over a frictionless pulley. m1 rests on the floor and m2 rests on a fixed incline of 40degrees. The masses are released from rest, and m2 slides 1.00 m down the incline in 4.0
asked by Wendy 
physics
i got my data task and i need to now is there a link between the height of the slope and the average speed of the object?
asked by sonia 
math
3•(7+13)=(3•7)+(3•13) _____ property
asked by person 
physics
A 45.7kg boy on a swing moves in a circular arc of radius 3.80 m.At the lowest position, the child's speed reaches 2.78 m/s. Determine the magnitude of the tension in each of the two vertical support chains. i used mv^2/r, but i keep getting the answer
asked by Samii 
US History
How were the Truman Doctrine and the Marshall Plan relevant to the American foreign policy goal of containment? Thanks MC
asked by mysterychicken 
chemistry
1) the value of Kb after the decomposition of sulfur trioxide (S03). 2SO3 (g)2SO2 (g) +O2 (g) is 1.79 x10^5 at 350 degree celcius. if SO3 initially at 0.200 atm pressure comes to equilibrium in an otherwise empty tank at 350 degree celcius, determine
asked by michelle 
math
I don't get make a ten. 9+6= then 2 lines come out of the 6 the next line says 10+ _ =_
asked by Lil 
computers
Explain what makes the speed of the computer increase and how the other components interact.
asked by Nathan 
chemistry
A 50.00ml sample of 0.200M hydroflouric acid (HF) is titrated with 0.200M NaOH. The Pka of HF is 3.452. a) calculate the pH of the HF solution before titration b) calculate the pH after the addition of 20.00ml of NaOH
asked by michelle 
chemistry
How many moles of sodium acetate CH3COONA must be dissolved in 1.00L of 0.200M acetic acid to make a buffer pH 4.56? ka of acetic acid is 1.76x10^
asked by linda 
Blood Disorder
Marcus is a 5 year old African American male who just moved from New York and his mother carries traits
asked by Anonymous 
spanish
4. In the sentence "Paula nos dice la verdad." (Paula tells the truth to us.) Is the "nos" a direct or indirect object pronoun? direct 8. Ya lo ___veo___ (ver), (I can see that) Please rewrite the following sentences (making them grammatically correct)
asked by whitney 
spanish
2. las sillas de ti. su sillas 3. el hermano de mí. su hermano 4. la computadora de tu y yo. mi equipio ya usted mismo 10.No he ___dormio___(dormir) en días. 13.Lo he ___pones___(poner) en tu mesa. 15.Tienes razón, lo he ___dije___ (decir) en broma (You
asked by whitney 
economics
You are planning to estimate a short run production function for your firm, and you have collected the following data on labor usage (L) and output (Q): Labor usage Output 3 1 7 2 9 3 11 5 17 8 17 10 20 15 24 18 26 22 28 21 30 23
asked by robbie 
SciencePhysics
The metre was originally defined as a fraction of the distance from the North Pole to the equator. What problems would this definition of the metre create for people? Would some problems be the long calculation? I can't really think of other problems.
asked by Anonymous 
Algebra
M = gw/g+w ... solve for w .... what's the steps I need to solve for w
asked by MARIAH 
statistics in psych
mouradian (2001) surveyed college students selected from a screening session to include tow groups a) perps b) comparisons...
asked by diana 
english
What does opportunity mean in today's current social and academic contexts
asked by bianca 
Precalculus
1. Write the given expression as a single logarithm. log(70x)+log(10y)2 2. Simplify the expression. (Do not use mixed numbers in your answer.) (5x^7/8)(2y^4/6)(x^9/8)(4y^2/6) 3. Write the given expression as a single logarithm. 2Ln(x)+Ln(4y)Ln(5z) 4.
asked by Anonymous 
statistics
Use the data set {0,4,4,8,4,16} to answer the following question. The mean of the data set is?
asked by Chrissy 
Cal 1
How do you find dy/dx by implicit differentiation? x^3 + y^5 = 1 Damon answer isn't right and I have no idea what he did. Somebody please help.
asked by Anyomous 
Math
Use the data set {100, 99, 98, ........2, 1} to answer the following question. The data set has a first quartile of?
asked by Chrissy 
math
apply the rule (1.5x, 1.5y) to the vertices of triangle ABC to get triangle PDR. Compare the corresponding measurements (side lengths, perimeter, area, angle measures) of the two triangles.
asked by jacko 
math
Apply the rule (2x, 0.5y) to the vertices of triangle ABC to get triangle FGH. Compare the corresponding measurements (side lengths, perimeter, area, angle measures) of the two triangles.
asked by jacko 
Current Events
Hi everyone!! I need a current event. Current events are where you write a summary on a article. But I can't find any good sites. I'm looking for sites because I don't wanna buy a newspaper with nothing I want. Can I please have help????
asked by Erin 
science
What would be my control in my science fair experiment if the problem statement is "Which brand of bread molds the fastest, "Bimbo" or the "Walmart Brand?"
asked by Sergio Pineda 
math/prealgebra
how do u change 0.015 from standard form to scientific notation [ please don't charge me money im only 11 yrs old trynna get help with my homework ]
asked by Daneeka 
physics
A 4.05 kg ball is dropped from the roof of a building 171.4 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 12.5 N on the ball. How long does it take to hit the ground? The acceleration of gravity is 9.81 m/s^2.
asked by Harmonie 
English 101
In what ways can the ability to write an organized and informative essay help you in your work outside of school?
asked by Johnnie 
english
help me find subjects and verbs in college sentences
asked by liz 
Business
I need to find out what the minimum wage is in Denmark  preferably in the brewery sector. Need help asap
asked by Nat 
physics
A 2.15 kg book is dropped from a height of 1.8 m. a) What is its acceleration? Answer in units of m/s2.
asked by Shawna 
chemistry
Lewis dot structure of IF4+
asked by Mely 
chemistry
What is the lewis dot structure for IBr4?
asked by Mely 
english
I need to contrast and compare Beowulf's speech (lines 365428) with Gaiwain's speech (lines 343361)
asked by Anna 
english
sentenece Frangments The great horned owl, an endangered species.
asked by Alayasia 
business
In recent years, Juresic Transportation purchased three used buses. Because of frequent turnover in the accounting department, a different accountant selected the depreciation method for each bus, and various methods were selected. Bus Acquired Cost
asked by vivian 
physics
A stunt man whose mass is 70 kg swings from the end of a 4.4 m long rope along the arc of a vertical circle. Assuming that he starts from rest when the rope is horizontal, find the tensions in the rope that are required to make him follow his circular path
asked by Cho 
math
In recent years, Juresic Transportation purchased three used buses. Because of frequent turnover in the accounting department, a different accountant selected the depreciation method for each bus, and various methods were selected. Bus Acquired Cost
asked by vivian 
ECONOMICS PLEASE PLEASE HELP!!
Lots of folks these days believe that CO2 emissions generated by human actions  notably production of goods and services  are causing climate change, more specifically, global warming. For the sake of dialectic discussion, let's suppose that claim is
asked by John 
english
Does this sentence sound awkward she almost committed suicide had her brother not stopping her.
asked by flame 
algebra
i do not get algebra at all so tell me what is 4x4x4x4 in the index notation
asked by ryan 
algebra
Kim brought a car 1,500.00.If the sales tax is %5,what will be the total that kim pay for the car?
asked by kim 
math
A square and a rectangle have equal areas. The length of the rectangle is 9 cm longer than the side of the square and the width of the recangle is 6 cm shorter than the side of the square. How long is the side of the square?
asked by kajul 
Pratigya
Please translate all this French into English. Please don't write the answer all together (squished together). Leave space, like I did.Thanks. On passe un bon film au Gaumont On y va? Pas possible j'etudie pour l'nterro demain d'accord alors a demain
asked by French 
physics
The fastest recoded pitch in Major league baseball was thrown by nolan ryan in 1974. If this pitch were thrown horizontally, the ball would fall 0.809m(2.65 ft)by the time it reached home plate, 18.3m (60ft) away. how fast was ryans pitch?
asked by Casey 
physics
A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of 18m/s. The cliff is 52 meters above the waters surface. How long does it take for the stone to fall to the water? with what speed does it strike the water?
asked by anonymous 
Economics
Explain how banks and individuals can use “covered interest arbitrage” to protect themselves when they make international financial investments
asked by Anonymous 
physics
A spy in a speed boat is being chased down a river by government officials in a faster craft. just as the officials' boat pulls up next to the spy's boat both boats reach the edge of a 5.0meter waterfall. If the spies speed is 15m/s and the officials'
asked by luke 
Computer
Draw an ERD that shows cardinality relationships among the entities, send the diagram to jesse
asked by Daniel 
physics
A shell fired from the ground with an initial speed of 1.70 x 10^3 m/s at an initial angle of 55 degrees to the horizontal. neglecting air resistance, find a) the shell's horizontal range b)the amount of time the shell is in motion.
asked by luke 
physics
A place kicker must kick a football from a point 36.0 meters (about 40yds)from the goal. as a result of the kick, the ball must clear the crossbar, which is 3.05 meters high. When kicked the ball leaves the ground with a speed of 20.0 m/s at and angle of
asked by anonymous 
Physics
A circular off ramp has a radius of 74 m and a posted speed limit of 50km/h. If the road is horizontal, what is the minimum coefficient of friction needed?
asked by applebottom 
AccountingJournal Entry
Issued 200,000 common shares for $15 per share. On the same days, they issued 1000, $4.00 cumulative preferred shares for cash at $100.00 per share. need help writing this in transaction. thnx
asked by Thara 
English
Songpyeon is a traditional Korean food. Koreans usually eat it on Chuseok, the Korean Thanksgiving Day. Songpyeon is made with rice, chestnut paste, and sesame seeds or beans. It is tasty.Therefore, we Koreans like this food very much. (Would you check the
asked by rfvv 
phyics
If two cars are traveling along a straight road, one behind the other. the first is traveling at a constant velocity of 10 m/s. the second, approaching from the rear, is traveling at 22 m/s. when the second car is 300m behind the first, the driver applies
asked by billy 
English
Posted by rfvv on Wednesday, October 27, 2010 at 8:52am. 1. Do you do any volunteer work? How about your friends? 2. Yes, I do. They do volunteer work, too. 3. No, I don't. They don't do volunteer work, either. (Are the answers grammatical?) 4. Do you do
asked by rfvv 
Microbiolgy Please Help!
You wish to study a variant [a close relative] of the Tobacco Mosaic virus. Specifically you want to characterize the capsid and genetic component as well as determine the viral load required to cause a disease state. a. What methodologies might you use to
asked by Chels 
business math
how can a bondholder can estimate the effective interest rate return on the total cost of the investment, including commissions.
asked by stan 
MANAGERIAL ECONOMICS
SHOULD WE RENT OR BUY A HOUSE?
asked by Anonymous 
maths
The thirteenth term of an arithmetic progrssion os 27 and the seventh term is three timees the second term. tind the first term,common difference and the sum of the first ten terms
asked by DeGraft 
maths
The thirteenth term of an arithmetic progrssion os 27 and the seventh term is three timees the second term. tind the first term,common difference and the sum of the first ten terms
asked by DeGraft 
bus 115
explain how social cultural differences created problems for walt disney opening up parks over seas.
asked by jerry 
statistics
suppost we wanted to test the hypothesis that control a group of cancer patients(group 1) would report higher mean pain ratings than an experimental group recieving special message treatment(group 2). Use the following information, Compute at a
asked by virna 
HCR230
3. Assignment: Medicaid and Health Care Reform due Saturday, 11/6/2010 Refer to U.S. Department of Health & Human Services Web site Select Medicaid Program – General Information. Write: a minimum of a 600 word paper discussing Medicaid Health Reform. •
asked by Axia 
ALgebra
simplify: (2x^2y)(5x^5y^6) (5y)^3
asked by mike 
Math
Use the echelon Method to solve the system of three equations in three unknowns. 2x+y+z=9 xy+z=1 3xy+z=9
asked by Erin 
12th grade
Solve & plot a graph for the following: F(X)=cos(X)cos to second power X for the interval negative pi greater than or equal to X less than or equal to positive pi
asked by Alex 
College Algebra
Is it possible for the xintercept and the yintercept of a straight line to be at the same point? Why or why not?
asked by Kelly 
pre algebra
symplify the following expression (3z)with exponent 0
asked by MYRIAM 
Calc
Let F be the function defined by F(X)=12X to the 2/3 power minus 4X Find the intervals of which F is increasing? Find X & Y coordinates of all relative max. pts? Find X and Y Coordinates of all relative min pts? Find the intervals of which F is concave
asked by Alex 
pre algebra
simplify the c omplex fraction: 6y/11 divided by 6y/11  30/y
asked by MYRIAM 
Mathematics
Since the beginning of satellite radio in 2001, the number of satellite radio subscribers has been growing very quickly. At the end of 2001, the total number of subscribers to XM Satellite radio was 27,733. By the end of 2005, the number of subscribers had
asked by Daisy 
Math
Write the following logarithmic equation in exponential form? 1 log0.001 = 3
asked by DAVE 
chemistry
The following reaction is carried out as a source of hydrogen gas in the laboratory: Zn(s) + 2HCl(aq) > ZnCl2(aq) + H2(g) If 305 mL of hydrogen gas is collected over water at 25 °C at a total pressure of 746 mm Hg , how many grams of Zn reacted?
asked by amy 
chemistry
The following reaction is carried out as a source of hydrogen gas in the laboratory: Zn(s) + 2HCl(aq) > ZnCl2(aq) + H2(g) If 305 mL of hydrogen gas is collected over water at 25 °C at a total pressure of 746 mm Hg , how many grams of Zn reacted?
asked by amy 
ALgebra word problem
monthly credit card interest is charged at a rate of 1.5%. after one month, total purchases plus interest equal $46.69. how much were the purchases?
asked by mike 
english
explain why communicationis described as a process
asked by joe 
english
does anyone have a point, quote and comment for the book "Flipped" for proving that this book is in the romance genre?
asked by Rebecca 
health
Utilization of a SWOT Analysis is a common method of comparing Internal and External factors that impact an organization. What is the benefit of this type of analysis for a health care organization?
asked by ROSA 
using windows
when savind a document or drawing you determine the destination folder in which the file will be saved by
asked by saint 
englis
The problem has gotten so bad that doctores are prescribing exercise during yearly checkups.
asked by mary 
Math
What is the equection of streght line
asked by Mhlengi 
chemistry
predict the order of increasing acidity of the compounds. Give a brief explanation why. Butanoic acidNexanoic acidBenzoic acidAcetic acid. thx
asked by david 
Math
As a restaurant owner there are many decisions that you need to make on a daily basis, such as where to keep inventory levels. You wish to replenish your stock of dishes by purchasing 250 sets for your restaurant. You have two dish design from which to
asked by Mary Troy 
chemistry
how do I plot absorbance vs concentration and transmittance %T vs concentration on the same graph??
asked by Vivian 
Social St
What kind of indians already lived in colonial New York?
asked by Ahmed 
chemistry
balance equation CA(HCO3)2(aq) = CaCO3(s) + H2O(l) =CO2(g)
asked by Anonymous 
physics
Under what conditions will the projectile have the greatest velocity when it hits the ground?
asked by unknown 
Social St
What were the main goals of the colonists for the newyork colony? What did they want it to be like?
asked by Sumaiya 
windows xp
Every time that I turn on my laptop it tells me to type in my password.But i am not suppose to type my passowrd when it turn. My setting are to load up without typing my password. Can you help me to stop it from typing my password to get back to normal.
asked by Toni 
8th grade
smithers think thet he can give the worker a special jucie to make them work faster. he makes two groups of 50. group A get the jucie gorup B did not get the jucie.group A staples 1587 paper group B staples 2113 papers. What is the control group,
asked by jesse 
physics
When you suddenly stand up after lying down for a while, your body may not compensate quickly enough for the pressure changes and you might feel dizzy for a moment. (a) If the gauge pressure of the blood at your heart is 14.3 kPa and your body doesn't
asked by john 
world history
True or False, Spain sponsored the Holy League against the Turks.
asked by Danielle 
english
does this sentence make sense? They’re excited about the spring fling Hannah replies, as she her cheeks stain scarlet.
asked by Anna 
Calculus I
Consider the function f(x)=((2)/(x^2))((3)/(x^5)). Let F(x) be the antiderivative of f(x) with F(1) = 0. Find F(3).
asked by Aaron 
chemistry
An ideal gas is contained in a cylinder with a volume of 5.0 102 mL at a temperature of 30°C and a pressure of 695. torr. The gas is then compressed to a volume of 25 mL, and the temperature is raised to 814.°C. What is the new pressure of the gas?
asked by Anonymous 
chemistry
A chemist weighed out 5.31 g of a mixture containing unknown amounts of BaO(s) and CaO(s) and placed the sample in a 1.50 L flask containing CO2(g) at 30.0°C and 750. torr. After the reaction to form BaCO3(s) and CaCO3(s) was completed, the pressure of
asked by Anonymous 
algebra
Given the linear equation y=1/3x3, find the ycoordinates of the points (6, ), (3, ), and (6, )
asked by franklin 
Math
Anne now has a balance of $900 on her credit card, on which 1.5% interest per month is charged. Assume that she makes no further purchases or payments (and that the credit card company doesn't turn her account over to a bill collector). (a) Find the rule
asked by Anonymous 
african literature
4. In Marechera's "Black Skin What Mask," describe the relationship between "the only two black students" on the campus? 5) Describe any "peculiarities" of the man who "slashed his wrists" and the writer. What were their likes and dislikes? Why do you
asked by Marechera 
physics
a ball is thrown horizontally from a hill 29.0m high at a velocity of 4.00m/s. find the distance between the base of the hill and the pointwhere the ball hits the ground.
asked by Anonymous 
Chemistry
A photon has a wavelength of 350 nm. Calculate the energy of the photon in joules
asked by kevin 
Physics  Sound Energy (check + help)
Sound, a form of energy can be modeled by using two distinctly different approaches. a) Describe the propagation of sound energy through air by discussing the motion of individual particles. Include possible mathematical equations that might apply. Ans:
asked by Farah 
Physics  wavefronts and wavelets
Describe how the wavelets that form in the wavefront apparently vanish behind it?
asked by Farah 
Chemistry
Air bags are activated when a severe impact causes a steel ball to compress a spring and electrically ignite a detonator cap. This causes sodium azide (NaN3) to decompose explosively according to the following reaction. 2 NaN3(s) 2 Na(s) + 3 N2(g) What
asked by Justin 
Precalculus
1. Write the given expression as a single logarithm. log(70x)+log(10y)2 2. Write the given expression as a single logarithm. ln7e/(square root 2x)ln(square root 2ex) 3. Write the given expression as a single logarithm. 2Ln(x)+Ln(4y)Ln(5z)
asked by Anonymous 
Physics  Scientific models
a) Do you believe that some current accepted scientific models or theories might be held in high regard because of the structure of the scientists who proposed them? b) Suggest on possible model or theory that is currently accepted by a majority of people
asked by Farah 
math
how much is .5 in percent?
asked by Elijah 
Math  derivative of cosine
y=8cos((1/2)x)+10 dy/dx = 4sin((1/2)x) What is the maximum slope from 0  4(pi)? I tried equating the endpoints, but it does not work, can someone teach me how to find maximums and minimums?
asked by Farah 
Physics
A pitcher claims he can throw a 0.157 kg baseball with as much momentum as a 1.5 g bullet moving with a speed of 1.50 multiplied by 103 m/s. (a) What must the baseball's speed be if the pitcher's claim is valid? m/s (b) Which has greater kinetic energy,
asked by matt 
Chemistry 20
a) If the pressure and volume of a gas both increase, will the temperature increase or decrease? b) If the pressure is doubled and the volume is tripled, by what factor must the temperature increase or decrease? c) If the pressure of the gas is decreased
asked by R 
Physics
Is momentum conserved when a cannon is rigidly mounted to the deck of a large boat and subsequently fired. What will happen and why?
asked by Fritz 
Math
As a restaurant owner there are many decisions that you need to make on a daily basis, such as where to keep inventory levels. You wish to replenish your stock of dishes by purchasing 250 sets for your restaurant. You have two dish design from which to
asked by Mary Troy 
math
im supposed to perform the indicated operation and simplify if possible 49x 1 11    +  2(7x+1) 2x(7x+1) x
asked by eric 
Physics
A rifle with a weight of 40 N fires a 4.0 g bullet with a speed of 300 m/s. (a) Find the recoil speed of the rifle. m/s (b) If a 650 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle. m/s
asked by Amy 
math
im supposed to perform the indicated operation and simplify if possible 49x over 2(7x+1) minus 1 over 2x(7x+1)plus 11 over x
asked by eric 
math
what is .09 in percentage?
asked by Elijah 
algebra 1
what is the smallest solution to 4(x 1) > 16
asked by jazz 
Calculus
How do you find the area under the witch of agnesi? (for all radii)
asked by Tom 
physics
If the ultimate shear strength of steel is taken to be 2.00 109 Pa, what force is required to punch through a steel plate 1.60 cm thick? Assume the superhero's fist has crosssectional area of 1.20 102 cm2 and is approximately circular. answer in Newtons
asked by john