chemistry! URGENT
61,442 results, page 19

Algebra URGENT! Conic sections
A spacecraft is in a circular orbit 150 kilometers above Earth. Once it attains the velocity needed to escape the Earth's gravity, the spacecraft will follow a parabolic path with the center of Earth as focus. Suppose the spacecraft reaches escape velocity above the North Pole... 
math need help urgent
Mr. Michaluk has a $50,000 personal (revolving) line of credit with the Canadian Imperial Bank of Commerce (CIBC). The loan is on a demand basis at a floating rate of prime plus 1.5%. On the fifteenth of each month, a payment equal to the greater of $100 or 3% of the combined ... 
Urgent: Spanish, Check Answers Please
6)Claudia y María ____________________ de México. Choices: Somos, Eres, Son, Es The answer is NOT Son or Somos My Answer: Es 9) Nosotros ____________________ mexicanos. Choices: Soy, Eres, es, Somos, Son The answer is NOT SOn, Soy, Somos My Answer: Eres 
physics, help urgent!
charge Q = +4.5 ƒÝC is located at the origin and is fixed so that it cannot move. A small object with mass m = 2.0 g and charge q = +8.0 ƒÝC is released from rest at point A on the xaxis at x = 2.0 cm. The small object moves without friction along the xaxis under the ... 
Physics Help Please!!!! Urgent!!
1) A 10 kg lead brick rests on a wooden table. if a force of 46N is required to slide the brick across the table at a constant velocity, what is the coefficient of friction? 2) A horizontal force of 100N is applied to a 200 kg refrigerator sitting on a horizontal surface. the ... 
Economics
Yeah, so I'm in urgent need of help with this homework. 1. Assume that in a perfectly competitive market, a firm's costs and revenue are: Marginal cost = average variable cost at $20 Marginal cost = average total cost at $30 Marginal cost = average revenue at $25 A) How will ... 
URGENT!!!!9th grade tech
i have my ISUs due tomorrow and if i don't get them in tomorrow they take off 50% the thing is idk wat 2 do 4 something its confusing me basically im supposed to find three different types of airplanes (being monoplanes, different models with the weird alphanumeric names?) and... 
Social Studies  URGENT
Using the five themes of geography, which theme best illustrates each statement: Location, character of place, humanenvironment interation, movement or region. 1. Islam spread to Eastern Europe from Southwest Asia 2. The Scandinavian countries share common influences from ... 
physics (urgent)
Two identical gas cylinders each contain 20.0 kg of compresses air at 1.00 x 106 pa and 275 K. One of the cylinders if fitted with a safety valve that releases air into the atmosphere if and only if the pressure in the cylinders raises above 1.10 x106 pa (the other cylinder ... 
Algebra Please Help Urgent
Bob is going from his house to his uncle Sam's house in another state. He started running. After a while he switches to a bicycle. After a while he switches to a truck. After a while he switches to a sports car. After a while he switches to a helicopter. In each segment he ... 
SCIENCE 9 URGENT!!
i wrote these questions before but no one helped me so im writing them again 1. a.) name the structures of the male reproductive system that sperm do not travel through. b.) what is the name given to these structures? 2. Name the other body system that the p e n i s is part of... 
English
Here are some more sentences on the same theme. I hope you can have a look at them. Thank you.It's really urgent. 1)The upper stage was used as a balcony or by musicians. The inner stage was used, for example, for the Juliet’s tomb scene (can you say that???). 2)In 1588 the ... 
Math Please Urgent
Here are the questions I need help with, please help. [(1/4)^3 divide sign (1/4)^2]^2 I got (1/4)^10 but I got it wrong (3^1/2)^3 _______ I got 1/216 9 (56r^2)divide sign (7r^2)= I got 8r x(y)(x)(2y) (12) (10xy^3) (3x^2y^2) (5x) (2y) simplify sqaure root of 160000 simplify... 
English
Can you please check these sentences? It's really urgent. 1) At school I mustn't cheat during a test (also tests?). 2)When I do the washingup, I have to put the dishes into the dishwasher, then put the washingup gel (powder) into the dishwasher, start it and wait for the ... 
PHYSICS  URGENT
a ball of mass m1 and a block of mass m2 are attached by a lightweight cord that passes over a frictionless pulley of negligible mass. the block lies on a frictionless incline of angle theta. (a) draw the free body diagrams (b) express newton's second law in component form (c... 
English Urgent
Can someone extend this paragraph. Rewording and extending please.. I would not let him disgrace us, disgrace himself, disgrace you. You see Annie, dear sweet Annie, My younger sister, he told me he was leaving me for someone, younger, sweeter, kinder than me. Patrick, the ... 
Urgent  physics
Air molecules and dust particles in the atmosphere will scatter sunlight. From a consideration of the position of the sun, estimate the direction of incidence of the sun's rays on the atmosphere. In what direction will an observer on the earth's surface need to look if he is ... 
PHYSICS URGENT DR BOB
A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m= ... 
MATH
The cost to manufacture a product is proportional to the quantity produced, with a cost of $270000 dollars per day when 900 items are produced. The cost to store n items is proportional to the square of n, with a daily storage cost of $6480 dollars when 900 items are stored. ... 
Math
URGENT Candice and Dino operate computer repair services. For a service call, candice charges 40 and dino charges 50, in addition, they each charge an hourly rate. Candice for 35/hr and Dino for 30/hr . One day their charges of two service calls were the same, what did they ... 
sci 241
could any one PLEASE help me get started on this??? I DO NOT UNDERSTAND IT!!!!!!! any advicer or help PLEASE URGENT Write a 1,400 to 1,750word paper in APA format outlining your healthy eating plan. Be sure to discuss: o Your current eating habits (as documented in the Food ... 
biology urgent
In mice, a gene controlling coat colour has 2 alleles; B (black) and b (white). A pure breeding black mouse is crossed to a white mouse and all the offspring are black. The offspring are then crossed to white mice. The phenotypes of the offspring of this second cross are ... 
math (urgent help needed)
Seeds of type A and type B are sold in a packet each must contain a)both type a and type b seeds b)at least twice the number of type b c)as there are type a seeds no more thanm 12 seeds 1)state the minimum number in each packet of type a and type b seeds. 2)if there are x type... 
Urgent math
please help The fox population in a certain region has a relative growth rate of 7% per year. It is estimated that the population in 2005 was 19,000. (a) Find a function n(t) = n0ert that models the population t years after 2005. n(t) = (b) Use the function from part (a) to ... 
Physics please help its urgent i need help
A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.41 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.5 m/s. (a) What is the ... 
Physics URGENT!!!
A commuter train passes a passenger platform at a constant speed of 31 m/s. The train horn is sounded at its characteristic frequency of 330 Hz.Assume the speed of sound is 343 m/s. (a) What is the frequency detected by a person on the platform as the train approaches? (b) ... 
Quadratic Relations, Algebra, Math
URGENT!! PLEASE HELP In a volleyball match. Jenny serves the volleyball at 14m/s, from a height of 2.5m above the court. The height o the ball in flight can be estimated using the equation h=4.9t^2+14t+2.5, where h is the height, in meters, and t is the time, in seconds, ... 
Math Urgent Please Help
Which construction is illustrated below? a. a perpendicular to a given line from a point not on the line b. a perpendicular to a given line from a point on the line c. perpendicular bisector of a given segment d. bisector of a line segment Please help with this. It doesn't get... 
PHYsics URGENT
a 7.0 kg object weighs 55 N when submerged and weighed in water. A) what is the value of the buoyant force of the water on the object b) what weight of water is displaced by this object? c) water weighs 0.0098 N per cubic centimeter. What volume of water (in cubic centimeters... 
math URGENT!!!!!!!
a certain type of candy is sold in small boxes of 8 and large boxes of 15. notice it would be impossible to buy exactly 12 candies without breaking up a box. it would also be impossible to buy 17 candies without breaking up a box. what is the greatest number of candies that it... 
Language Arts URGENT!
2. Which of the following from "Take the Junk Out of Marketing Food for Kids" is an example of semantic slanting? (1 point) "food pyramid" "food manufacturers" "food police" 3. Which of the following testimonials would be MOST appropriate to support the ideas in "Take the Junk... 
Physics Help Urgent Please!!!
A crane is used to lift air conditioning units to the top of a 5story building. Each story is 3.5 m high. The crane accelerates the units while lifting the units past the first story and then lifts them at a constant velocity past the second through fourth stories. it hen ... 
Classical Mechanics Physics  Urgent help please
A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m= ... 
Economics  URGENT
Suppose we now care about the long run decisions of a firm that has a production function of the form q = 4L^1/2 + K Suppose w = 1 and r = 0.5 Assume that, at the beginning when w0 = 1 and r = 0.5, the firm chose to produce q0 = 20 units of output. Then, the wage increased to ... 
SCIENCE PROJECT
I am interested in doing a science project on the math and science of different snowboarding tricks and techniques. Does anyone have advice and suggestions about how to do a project like this?? Please help! Very Urgent! Well you could do a nu,ber of different things. You could... 
chemistry
Describe the differance between chemistry and chemical technology. Technology is the making of applications. Chemical technology...making chemicals for practical or commercial purposes. Chemistry...the study of materials, their reactions 
Science Urgent😖😖😖
Why most organisms reproduce A( organisms must reproduce to maintain genetic similarity in the species B( organisms must reproduce to continue to build genetic diverse city into the species C( organisms must reproduce to continue the species D( organisms must reproduce to ... 
URGENT Home Economics
I've got this assignment that has to be posted to the board of examinations in the morning and I don't know how to go about this question AT ALL... Reserch has highlighted the close relationship between health, nutrition and socioeconomic status. Attention has been drawn to ... 
Math URGENT HELP
Find the next three terms in the sequen 1. 30, 22, 14, 6... 3, 12, 21**** 1, 8, 15 1, 2, 3 2, 10, 18 4. Find the first four terms of the sequence represented by the expression. 4. 3n+5 5,8,11,14 8,11,14,17 3,6,9,12 0,8,11,14 (idk about this one)^^^^^^^^^ Find the ... 
physics need urgent helpp
i have tried everything, please helpp A snowmobile, with a mass of 530 kg, applied a force of 410 N backwards on the snow. What force is responsible for the snowmobile’s resulting forward motion? (Hint: Think action–reaction force pairs.) If the force of friction on the ... 
Urgent!!! Physics
A meteor streaking through the night sky is located with radar. At point A its coordinates are (5.60 km, 1.25 km), and 1.12 s later its has moved to point B with coordinates (6.16 km, 0.900 km). A. Find the x component of its average velocity between A and B. (in Km/s) B. Find... 
Algebra, URGENT!!!
1) Mio can build a large shed in 15 days less than Yuuko can. If they build it together, it would take them 18 days. How long would it take each of them working alone? 2) If Kamina can do a job in 29 hours and Simon and Kamina working together can do the same job in 10 hours, ... 
grd 12 U chemistry
Hi, i have a project for chemistry, i have to choose a scientist (i chose Micheal Smith) his career is biochemistry and i have to create a career related to biochemistry.. Question: After finding the famous chemist and then using their field of chemistry, create a career that ... 
Urgent Calculus Help
Based on the following table of values for the function w(t), answer the questions below. t and w(t) are a table with the following values: (100,2.6), (110,7.3), (120,12.7), (130,19), (140,26.1), (150,34.1) a) Which of the following best describes the derivative of w(t)? A. ... 
Maths Urgent please help
Sir Donald Bradman had scored 6996 runs in 69 completed test innings. he had one more innings to play. How many runs did he need to score in his final innings in order that his test batting average was greater than or equal to 100? You must write down the inequality that you ... 
English
I left out the following sentences. Thank you very much. It is really urgent!! 1) Where are you going to have a holiday next summer? 2) I'm going to stay there for (is for necessary in writing?) two weeks with my family. 3) I'm going to visit many cities in Calabria, like ... 
Precalculus; urgent ! Please help !
1.Graph the polar equation r=32sin(theta) 2. Find the polar coordinates of 6 radical 3,6 for r > 0. 3. Find the rectangular coordinates of (7, 30°). 4. Write the rectangular equation in polar form. (x – 4)2 + y2 = 16 5. Write the equation –2x + 6y = 7 in polar form. 6... 
VERY URGENT SCIENCE
A science teacher was curious to see whether offering money for good grades would increase student performance on a test. The teacher offered half the students in the class $5.00 if they got an A on their next test. The other half of the class was not offered any money. What ... 
Sta 112
This is my question every one . Please help me have it already I had 6 as my answer. In a class of 50 student 28,22,20 of them offer physics,chemistry and biology respectively also 4 of them offer physics and chemistry but not biology,3 offer physics and biology but not ... 
Physics URGENT!!!
A crate of mass 52.8 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.351, and the coefficient of kinetic friction is 0.305. (a) The truck accelerates forward on level ground. What is the... 
Grade 12 University Chemistry
Hi, i have a project for chemistry, i have to choose a scientist (i chose Micheal Smith) his career is biochemistry and i have to create a career related to biochemistry.. Question: After finding the famous chemist and then using their field of chemistry, create a career that ... 
MATH URGENT ASAP
Find the next three terms in the sequen 1. 30, 22, 14, 6... 3, 12, 21 1, 8, 15 1, 2, 3 2, 10, 18**** 4. Find the first four terms of the sequence represented by the expression. 4. 3n+5 5,8,11,14 8,11,14,17 3,6,9,12 0,8,11,14 (idk about this one)^^^^^^^^^ Find the ... 
Algebra
(I answered a couple of them but am not confident on my answers, so can you please tell me if my answers are not correct to the ones I answered and for the ones I haven not answered that is because I do not know how to do them. PLEASE HELP!!! This assignment is already late). ... 
Art
I left out these last sentences. I really hope you can have a look at it. It is very urgent! 1) She is the one outside the window, always watching other people indulging themselves on the pleasures of life. 2) When given the chance herself in this meal, however, she is tempted... 
Math(Urgent)
Compute the maximum product for two positive numbers x and y with the property that the sum of the first plus five times the second is 5000. 1) Indicate the objective equation 2) Indicate the constraint equation So the objective = f(x)=xy and the constraint = x+5y=5000 Now ... 
Urgent!!! Physics
At an air show, a jet plane has velocity components Vx = 625 and Vy = 415 at time 3.85s and Vx = 838 and Vy = 365 at time 6.52s . A. For this time interval, find the x component of the plane's average acceleration in km/h2. B. For this time interval, find the y component of ... 
English
Can you help me express the following ideas in a letter? It is really urgent and I don't want to be misunderstood. Thank you. 1) We're looking for a double room plus extra bed for my sixyearold child for 15 nights from 4 August to 19 August. 2) In particular, we would be ... 
Math  urgent
When solving for x by completing the square as in the equation 3(x1)^21=0 should I add one to both sides then divide by three or add one to both sides then square root both sides? It makes sense to me to first divide by three, but if I do this, I'm not getting the correct ... 
MathematicsUrgent
Don is planting flowers in the school garden's planter box. The planting are is five and onehalf feet long and 10 inches wide. Each plant is 2 inches wide. There must be 8 inches of space between the flowers. What is the largest number of plants he can put into the planter ... 
URGENT! discrete math help please
1. for any sets X and Y, we define the symmetric difference X ∆Y by: X∆Y = (X  Y) ∪ (Y  X) = (X ∪ Y)  (X ∩ Y) Prove the following: for all sets A,B and C, if A  (B ∩ C) = ∅ then A C ⊆ B  for all sets A,B and C, if A ⊆... 
URGENT HELP WITH DISCRETE MATH PLEASE
1. for any sets X and Y, we define the symmetric difference X ∆Y by: X∆Y = (X  Y) ∪ (Y  X) = (X ∪ Y)  (X ∩ Y) Prove the following: for all sets A,B and C, if A  (B ∩ C) = ∅ then A C ⊆ B  for all sets A,B and C, if A ⊆... 
just wondering...
what is harder, chemistry or physics? because i've been struggling all year in chemistry and i'm taking physics next year... i have a solid a in alg.2 though... oh yeah, and i want to be a physical therapist. so if i'm not to good in chemistry can i still be a physical ... 
kindda URGENTsocial studies/world civilizations
i have about one more page to write in this report about the egyptian god of death, osiris, and i've gone on about how he was born, who was involved, not much to his life, but got a good part of his death covered...i have one more page and i am at loss for what to write about ... 
Calculus (urgent!!)
Consider the function f(x)=12x^5+60x^4−100x^3+4. For this function there are four important intervals: (−INF,A], [A,B] ,[B,C] , and [C,INF) where A, B, and C are the critical numbers. Find A, B, and C. At each critical number A, B, and C does f(x) have a local min... 
Social Studies (URGENT)
Why was it much more common to help and visit on'es neighbours during the 1820's in Upper Canada than it is here today? This is the only part in the textbook that talks about it but I can't find answer. text: It was much more common to help and visit on'es neighbours than it ... 
sociology
How about  class structure in your town or school? prejudice about a particular ethnic group? classroom group projects? perceptions about authority figures? sorry i wrote in dat language i need to do a project in sociology for 20 marks and i am not able to decide on a topic ... 
finance... please help me urgent
an you help me please to get an ideas or relevant answers to the questions. thank you 1. how does money affect in business firms. ans. money or the exchange rates is the most important in order to maintain and stabilise the business firms. 2. Is political will can contribute ... 
chemistry
I am doing stoicheometry and I need help. Is there anyone who knows about it? It's in my chemistry class. HELP! I am in tears and cannot figure this out. 
Chemistry
Why was Wohler's synthesis of urea significant to the field of carbon chemistry? Please help. Thank you. 
chemistry
answers to latenite labs chemistry lab#9 stoichiometry by loss of CO2 
chemistry
I need some help with making a solubility rule for CrO4 2 for my chemistry homework. 
chemistry
what else could you use the Volhard method in Chemistry for? like is it used in a certain context? 
college chemistry
what major concepts makes chemistry useful in everday life? 
Chemistry
Why a model of the atom is crucial to understanding chemistry and in explaining the behavior of matter? 
chemistry
which of the following has highest binding energy (nuclear chemistry) Fe56 , O16 , H3 , U235 and explain why 
Algebra joint, inverse and direct variation
Urgent! If t varies inversely as the cube of z and directly as the square of r, and t=4 when z=3 and r=6, find t when z=6 and r=9. T= k (square) r/(cubed) z 4=k (square) 6/ (cubed) 3 The electrical conductance of a wire varies directly as the square of its a diameter and ... 
URGENT ECON QUESTION ABOUT DEMAND AND SUPPLY
ok this is the scenario 12. Industry: cell phones Event: 1.) cell phones are reported to cause brain tumors 2.) the cost of cell phone electronic chips are cheaper so in this scenario, demand decreases and the supply increases....thus demand shifts to the left and supply ... 
URGENT Physics PLEASE help
5. A 1,600 kg car is moving south at 24 m/s. What is its momentum? (Points : 1) 66 kgm/s south 66 kgm/s north 38,000 kgm/s north 38,000 kgm/s south Question 6. 6. The velocity of a 150 kg cart changes from 6.0 m/s to 14.0 m/s. What is the magnitude of the impulse that acted on... 
chemistry
hey i need help on finding a good oxidation chart for chemistry. 
chemistry
Where would you find iron II sulphide outside a chemistry laboratory? 
chemistry
Is Procion Red Dye a suitable model for chemistry lab? 
Chemistry
I really need help with this; it'll be the last chemistry question I ask: 44. Identify the type of reaction. a. AB > A+B b. AB + C> AC + B c. AB + CD > AD + CB Thanks MC 
Chemistry II
Why is YBa2Cu3O7 a super conductor? Explain Chemistry and Structural bases. 
chemistry
I need help on a balance ionic equation in chemistry Ca(NO3)2 + NaOH 
CHEMISTRY
how would a chemistry student make a 600 mL of 1.5 M solution of NaBr? 
CHEMISTRY
how would a chemistry student make a 600 mL of 1.5 M solution of NaBr? 
chemistry
what major concepts makes chemistry useful in everday life? 
Physics urgent
A block of mass m = 3.20kg slides from rest a distance d down a frictionless incline at angle θ = 30.0° where it runs into a spring of spring constant 425 N/m. When the block momentarily stops, it has compressed the spring by 22.0 cm. (a) What is the distance d? I found ... 
Physics. Need urgent help.
A scuba diver searches for treasure at a depth of 20.0m below the surface of the sea. at what pressure must the scuba device deliver air to the diver? (density of sea water= 1030kg/m^3;atmospheric pressure= 1.013x10^5 pa) another one A king's crown is said to be solid gold but... 
Physics URGENT!!!
The overall length of a piccolo is 30.6 cm. The resonating air column vibrates as in a pipe that is open at both ends. Assume the speed of sound is 343 m/s. (a) Find the frequency of the lowest note a piccolo can play, assuming the speed of sound in air is 343 m/s. (b) Opening... 
chemistry
where would you find calcium carbonate and sodium chloride outside a chemistry lab? 
chemistry
where would you find iron II oxide and sodium hydrogencarbonate outside a chemistry lab? 
Chemistry
This is question 4a on section a.12 chemistry. What will you observe happening to the balloon as it sits in the warm car 
Chemistry
What is the difference in molecular chemistry between silicone polymers and other polymeric materials? 
Chemistry
What is the difference in molecular chemistry between silicone polymers and other polymeric materials? 
Chemistry
What is the difference in molecular chemistry between silicone polymers and other polymeric materials? 
Chemistry
Does anyone know the answers to the Chemistry unit 4 lesson 11 ( Chemical Bonding ) test ?? In 11th grade 
chemistry
what is the purpose of using an ice bath in organic chemistry when isolating the final product? 
Chemistry
Explain why a model of the atom is crucial to understanding chemistry and in explaining the behavior of matter. 
Urgent Spanish Check
La clase no es _____. Hay pocos alumnos. Grande? How would you express the following question in English?: ¿Cuántos libros hay? How many books are there? Hay muchos ____ diferentes en una escuela secundaria. cursos ¿Hay una clase de biología hoy? Sí, ______. lo hay There ...