A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile\'s engine cooling system. If your car\'s cooling system holds 4.00 gallons, what is the boiling point of the solution?
83,914 results, page 45

Chemistry
Calculate the freezing point and boiling point of each of the following solutions A. 2.75m NaOH in water B. 0.586m of water in ethanol c. 1.26m of naphthalene (C10H8) in benzene 
Physics
A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the table as follows: a 7.0kg object at the origin of the coordinate system, a 8.0kg object at (0, 2.0), and a 17.0kg object at (4.0, 0). Find the resultant ... 
Physics
A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the table as follows: a 4.0 kg object at the origin of the coordinate system, a 5.0 kg object at (0, 2.0), and a 9.0 kg object at (4.0, 0). Find the resultant ... 
Exploring Space
if u could travel at the speed of ligt without fuel, where would the energy required for the engine come from? is this possible? it is impossible to travel anywhere without fuel. The only other option is to walk by foot. I don't know the answer to the question, i'm stumped, ... 
computer science
You are required to use the Account class to simulate an ATM machine. Create ten accounts in an array with id 0, 1, 2 ...9, and initial balance $50. The system prompts the user to enter an id. If the id is entered incorrectly, ask the user to enter a correct id. Once an id is ... 
Chemistry
CaH2 is so reactive with water that it can be used to "dry" solvents other than water. If a sample if solvent that contains a total of 14g of water is added to 24.6g of calcium hydride, which of these will remain after the reaction is complete: water or calcium hydride? A. ... 
physics
A 100 g aluminum calorimeter contains 250 g of water. The two substances are in thermal equilibrium at 10°C. Two metallic blocks are placed in the water. One is a 50 g piece of copper at 84°C. The other sample has a mass of 58 g and is originally at a temperature of 100°C. ... 
Math *checking answers*?
The temperature was 48.2° when Marcy went to bed and 35.7° when she woke in the morning. What was the change in temperature? A: 83.9° B: 82.5° C: 13.5° D: 12.5° <  ? Carlos bought 3 gallons of ice cream for $9.50. Which proportion can be used to find the cost of 7 ... 
Physics
Your projectile launching system is partially jammed. It can only launch objects with an initial vertical velocity of 42.0 m/s, though the horizontal component of the velocity can vary. You need your projectile to land 211 m from its launch point. What horizontal velocity do ... 
math
Water is being pumped out of a pool. the number of gallons of water W left in the pool at time t in minutes can be modeled by W(t) = 7t+ 350. Find the yintercept and explain what it represents in this problem. 
Business
Lisa is considering a wireless ordertaking system, and she has asked you to do a cost analysis of acquiring it. Consider the following information in your analysis: • The acquisition cost is $35,000 paid at the time of installation. • It reduces the wait staff by one ... 
Health care
My question is, how do I start a radio ad??? Should I just come out and tell about a healthy musculoskeletal system??? Write a 150 to 200word script for a radio ad that promotes a healthy musculoskeletal system in old age. Address the risk factors for arthritis, osteoporosis... 
physics
1.A train passes an electric post in 8sec and a bridge of length 1km in 108sec .Find the speed of the engine . 2.A runner travels at the rate o f25km/hr for 4min ;then at 50km/hr for 8minn and finally at 20km/hr for 2min .Find a) the total distance covered in km and b)average ... 
algebra 2
the number of milligrams of a drug that remains in a patient's system after t hours is given by the function a(t)=ie^rt. jordan was given 500 milligrams of medicine which leaves his bloodstream at a rate of 25%. how much of the medicine remains in his system after 6 hours? 
Math
A) A rectangle has perimeter 64 cm and area 23 cm^2. Solve the following system of equations to find the rectangle's dimensions. length=23/width length + width = 32 B) Solve the system of equations x^2+y^2=1 xy=0.5 
Chemistry
If 244 KJ heat is released and 35 KJ WORK done on the system.calculte (a)change internal energy and change in enthalpy of system? (b) change in internal energy and change in enthalpy of the suround ? 
Trig
Use a graphical method to find a solution to the following system of equations in the interval –1 ≤ x ≤ 5: y = x2 – 4x + 2 y = x + 2 The solution set to this system of equations in the interval –1 ≤ x ≤ 5 is {} {(2, 0)} {(0, 2), (5, 7)} {(2, 0), (... 
Calculus I
*Optimization problem* [I don't know how to get to the answer] Problem: You have a cylindrical can with radius 4cm and height 10cm. Inside is a marble with a radius that has to be larger than 0 but less than 4 cm (even the largest marble will fit entirely). You're filling it ... 
Physics
An automobile is brought to a stop by applying friction brakes to the wheels. The brakes get hot; their thermal energy is increased. The decrease in kinetic of the car is equal to the increase in thermal energy of the brakes. According to the first law of thermodynamics, the ... 
chemistry
The alkanes are a homologous series of compounds containing only carbon and hydrogen that have the general formula . Members of this series include butane (), 2,2dimethylpentane (), hexane (), and heptane (). The boiling points of some members of this homologous series are ... 
Georgia Studies
Can someone check if I answered this question correctly? What is the county unit system? Ans The county unit system gave each county a number of voting units based on the size of the population. For example, a city that is highly populated could get 8 voting units and farm ... 
Physics
1. A ball is launched from a cliff with an initial velcity of 10 m/s at an angle of 40 degrees above horizontal. If the ball lands 24 m away, determine the height of the cliff. 2. if the mass A is 1 kg and the mass of B is 6.0 kg, determine the acceleration of the system and ... 
maths, statistics
The yearly mileage accumulated by an automobile in a large car rental company’s ﬂeet is normal with mean 18000 kilometres and standard deviation 1700 miles. At the end of the year the company sells 80% of its cars, keeping the 20% with the lowest mileage. Do you think a ... 
chemistry
Energy must be transferred into or out of a system in order to cause phase change.In addition changes in the energy can be directly related to pressure volume changes.If equal moles of each gas is compressed which one would have the largest pressure volume change during ... 
chemistry
Energy must be transferred into or out of a system in order to cause phase change.In addition changes in the energy can be directly related to pressure volume changes.If equal moles of each gas is compressed which one would have the largest pressure volume change during ... 
chemistry
Energy must be transferred into or out of a system in order to cause phase change.In addition changes in the energy can be directly related to pressure volume changes.If equal moles of each gas is compressed which one would have the largest pressure volume change during ... 
Physics
An interacting system of two objects has no external force acting on the system. The first has a mass of 2.00kg and is moving with a velocity (2.00m/s)i + (1.00m/s)j at time t=0s. The second object has a mass of 3.00kg and is moving with a velocity (1.00m/s)i + (1.00m/s)j at ... 
Physics
CAN SOMEONE PLEASE HELP ME; I NEED TO KNOW IF MY ANSWERS TO THESE QUESTIONS ARE CORRECT! THANK YOU SO MUCH!! 1.) Whenever an interaction occurs in a system forces occur in equal and opposite pairs. Which of the following do not always occur in equal and opposite pairs? a) ... 
8th Grade History
Can I have these answers checked... 1. Which of The following provides the definition of a nation? A. The Highest elected officials in a country B. The are ruled by an independent government C. A country with defined borders and foreign policy enforced by a military*** D. A ... 
Health
The three lines of defense your body has against disease include all except? A. physical and chemical defenses B. inflammation C. immune system D. scarring True or false B cells and H cells are two important cells in the immune system that help fight infection. Antibodies are ... 
creating environment for learning
which of the following behaviors might be resolved by changing the environment? a. two children fighting over a toy fire engine. b. children wandering rather than participating in activities during center time. c. children climbing on furniture d. all of the above 
Chemistry
Combusting 44.8L of H2 with 22.4 L O2 (both at STP) results in the formation of 44.8 L of H2O if the reaction is maintained at the same conditions (STP) and goes to completion. Given the heat of formation of water (= 241.8 kK/mol) calculate a) the PV work b) the heat evolved ... 
Chemistry
When given a chemical reaction, how would I know whether a reaction is endo or exothermic and whether work is done on the system or by the system. Without using any calculations. So I have a couple reactions which I have to use chemical reasoning to to determine. 2 Cl(g) >... 
Physics
In the absence of external torques, the angular momentum of a system is conserved. An artificial satellite orbiting the Earth quadruples its kinetic energy. Assuming no external torques act on the system, the radius of the orbit will ... a. Decrease by a factor of 4 b. ... 
Physics _ Please help
25 kg of ice at 0° C is combined with 4 kg of steam at 100° C. What is the final equilibrium temperature in ° C of the system? (Lf = 3.33 x 105 J/kg; Lv 2.26 x 106 J/kg, specific heat capacity of water =4186 J/(kg.K)) Question 2 options: A) 40 B) 20 C) 60 D) 100 E) 8 
Biology 9th grade
I am stuck on a question on The Integumentary System, the question is Water molecules in the blood pass through the walls of the (blank) into the sweat glands. I am not sure, can someone help me, thanks. 
MATH @Damon @ms. Sue
Sam is observing the velocity of a car at different times. After three hours, the velocity of the car is 53 km/h. After six hours, the velocity of the car is 62 km/h. Part A: Write an equation in two variables in the standard form that can be used to describe the velocity of ... 
physics
A theoretical gasoline engine runs with 76 percent efficiency. It is calculated that it expels 3.25*10^4 J of heat. a. Find the heat absorbed in one cycle. b. Find the work output in one cycle. 
physics
A boat floating in fresh water displaces water weighing 35.6 kN. (a) What is the weight of the water this boat displaces when floating in salt water of density 1.10 x 10^3 kg/m^3? (b) What is the difference between the volume of fresh water displaced and the volume of salt ... 
Physics
Archimedes principle. The weight of the bouy is given, so the weight of water displaced by the submerged part of the bouy equals that. Figure the volume that weight of water displaces, then figure the height of a .33m diameter column of water will have of that volume. A large ... 
calculus
6. A trough is in the shape of a triangular prism. It is 5 feet long and its vertical cross sections are isosceles triangles with base 2 feet and height 3 feet. Water is being siphoned out of the trough at the rate of 2 cubic feet per minute. At any time t, let h be the depth ... 
English
Can you please check if the following sentences are correct? I thank you very much in advance. 1) In the morning I usually make coffee for my parents and myself (?). Then I got washed and changed. 2) I usually take the child to the beach.I have to carry a heavy bag (how do you... 
statistics
It is claimed that an automobile is driven on the average more than 20,000 kilometers per year. Random sample of 10 automobile owners are asked to keep a record of the kilometers they travel. If the sample mean and standard deviation of automobile driven are found to be 23,500... 
English
Thank you very much for your corrections. Here are a few more sentences on the same subject I'd like you to check. 1)The Industrial Revolution brought several changes to Britain. First of all, it caused an enormous increase in production and consequently in the total wealth of... 
Science
1. How do scientists classify small objects in the solar system? by size by shape by size, shape, and temperature by size, shape, and composition** 2.Which of the following categories of small bodies in the solar system does Ceres belong to? dwarf planets** comets meteoroids ... 
History
Which was not an invention that fueled the Industrial Revolution? blast furnace steam engine flying shuttle spinning mule I know that the answer is not B or C. I chose the spinning mule, but I never learned what the blast furnace is so could it be that? 
Education technology
1. which of the following is an example of tangible property? A method for creating ice cream that you friend thought of An idea for an invention that your dad mentioned briefly but did not write down•• Song lyrics printed in a songbook A quicker system of washing a car ... 
MATH
NEED EXTREME HELP!@#$%^a rule of thumb used by car dealers is that the trade in value of a car decreases by 20% of its value each year. suppose the initial value of your car is $23,500. write an equation expressing the trade in value of your car as a function of the number of ... 
English
In following sentence is Knowing a verbal participle or a verbal gerund? Knowing how an engine works is the key to auto repair. I want to say gerund because I say it is the subject. 
science
a glass is partially filled with water. Five ice cubes are placed in the glass, causing the level of the water to reach the rim of the glass. Which of the following statments best explains the increase in water level? A)The volume of the sumerged ice is equal to the volume of ... 
chemistry
How much energy must be put into a system to raise 100 g of solid water from 5.5 degrees Celsius to 75 Degrees Celsius? Heat Capacity of Ice: 2.09 J/g degrees C Heat Capacity of Water: 4.18 J/g degrees C Heat of Fusion: 6.01 kJ/mol 
Physics
A 343kg boat is sailing 16.2° north of east at a speed of 1.98 m/s. Thirty seconds later, it is sailing 37.5° north of east at a speed of 3.76 m/s. During this time, three forces act on the boat: a 30.3N force directed 16.2° north of east (due to an auxiliary engine), a ... 
Science
A child has a fever. The temperature of his body is recorded as 103 degree farenheit by a thermometer . A doctor advised his mother to give medicine to lower the temperature. As we know evaporation causes cooling. The medicine given to child enhanced the evapouration. ... 
physics
The four tires of an automobile are inflated to a gauge pressure of 1.8 multiplied by 105 Pa. Each tire has an area of 0.025 m2 in contact with the ground. Determine the weight of the automobile. No idea how to start, please help. 
General Chemistry
How do I calculate the concentration of KmNO4 when.. Initial Volume is 50mL 0.11g sodium oxalate Volume of KMnO4 used to titrate oxalate and acid= 34.0 mL Volume of KMnO4 used to titrate acid only= 0.10 mL Please help me Thank you! 
physics
A test rocket is fired vertically upward from a well. A catapult gives it an initial speed of 80.8 m/s at ground level. Its engines then fire and it accelerates upward at 3.90 m/s2 until it reaches an altitude of 920 m. At that point its engines fail, and the rocket goes into ... 
Physics
You and another person go to the museum and decide to take a look at an exhibit that has a bike with an attached heating coil/generator. The coil is placed in a tank of water at 20 deg C. Peddling makes the coil increase the energy of the water. The goal is to make the water ... 
physics
A closed container with a volume of 8000cm^3 is filled with Xenon gas. the temperature is 273K and the pressure is 2 atm. How many moles of Xenon are in the container? The container is now submerged in boiling water until the gas inside the container is at 373K. What is the ... 
operating system
Case 22: Comparing WordProcessing Applications You see an opportunity to possibly save your company money by adopting the OpenOffice suite for the new PCs in the Engineering Department. Your boss is interested in your suggestion, but wants to see a list of pros and cons for ... 
FEEDBACK CONTROL SYSTEM
Figure below shows the block diagram of a dcmotor control system (note the dcmotor is represented by G(s)= K(s+3)/s(s+1)(s+2).The signal N(s) denotes the frictional torque at the motor shaft. a) Find the transfer function H(s) so that the output Y(s) is not affected by the ... 
FEEDBACK CONTROL SYSTEM
Figure below shows the block diagram of a dcmotor control system (note the dcmotor is represented by G(s)= K(s+3)/s(s+1)(s+2).The signal N(s) denotes the frictional torque at the motor shaft. a) Find the transfer function H(s) so that the output Y(s) is not affected by the ... 
programming
A hotel’s occupancy rate is calculated as follows: Occupancy rate = number of rooms occupied total number of rooms Write a program that calculates the occupancy rate for each fl oor of a hotel. The program should start by asking for the number of fl oors in the hotel. A loop... 
Chemistry
My Chem professor is out for the weekend and I'm confused about what the question is asking or the equations needed... A 10.0g block of pure nickel (Cp = 0.445 J/g°C) is brought to each of the temperatures below. A sealed beaker containing 15.0 g water at the temperature ... 
Scient
(NaCl) solutions used in intravenous injections have a concentration of 0.90% NaCl (mass/volume). 4.5grams of NaCl are needed to prepare 500.0 mL of this solution How much water must evaporate from this solution to give a solution that is 9.0% NaCl (mass/volume)? 
PHYSICS
I AM SORRY I JUST HAVE ONE OF THE MOST HORRIBLE TEACHERS, AND I AM TEACHING MYSELF FOR I GET NOTHING IN CLASS. On an oldfashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of 0.565m from the axis of rotation of the stool. She is given an ... 
Social Studies
1. The Middle Ages began with the collapse of the a. Renaissance b. Roman Empire c. Kingdom of Mali. d. Tang Dynasty 2. In the system of feudalism, who owns the land? a. vessels or knights b. peasants c. kings or lords d. priests 3. A lord's main duty toward the people who ... 
Math7
Write and equation that could be used to find x the number of ounces in g gallons x= 
Algebra
In 8 months, 55.6 gallons were used. Find the unit rate. Is the answer 6.95 
English
I have completed this test and I missed 4 questions. My answers are submitted in blue, can you tell me which questions are wrong. 1.Having studied small engine repair in night school, fixing the lawn mower was easy. dangling modifier 2. When I asked for a submarine, the ... 
Physics
The first stage of a space vehicle consumed fuel and oxidizer at the rate of 1.65 104 kg/s with an exhaust speed of 2.55 103 m/s. (a) Calculate the thrust produced by this engine. (b) Find the acceleration the vehicle had just as it lifted off the launch pad on the Earth, ... 
Physiology
Indicate whether the following would increase or decrease during exercise.? 1.activity of the sympathetic nervous system 2.urine FORMATION 3.vasodilation of blood vessels in the skeletal muscles 4. stroke volume 5.venous return 6.activity of the vagus nerve 
Physics
19) A 100g aluminum calorimeter contains 250g of water. The two substances are in thermal equilibrium at 10 C. Two metallic blocks are placed in the water. One is a 50g piece of copper at 80 C. The other sample has a mass of 70g and is originally at a temperature of 100 C. ... 
Science
What is the science of measurement 9 letter word. Thanks, Lindsey Hi there, I was able to find the answer online by typing "science of measurement" in quotes into the google search engine. I hope that helps. Thanks I had done that but without the quotetion marks. Thanks, ... 
Geometry
The piolet of a singleengine airplane flies at a constant speed of 200 km/h at a bearing of N 25 degree E. There is a 40 km/h crosswind blowing southeast (S 45 degress E). What are the plane's actual speed and direction? Round the speed to the nearest tenth and the directiuon... 
Chemistry
I need to calculate the mass of CO2 produced in the reaction of NaHCO3 + HCl Data Mass of NaHCO3 = .05g Mass of system before reaction 117.9 g Mass of system after reaction 117l98 Maxium pressure 1.4094 initial pressure 1.0094 pressure change .4 temp 299.2K 
Advanced Cost Managemement
Problem 1  Aunt Ethel's Fancy Cookie Company manufactures and sells three flavors of cookies: macaroon, sugar, and buttercream. The batch size for the cookies is limited to 1,000 cookies based on the size of the ovens and cookie molds owned by the company. Based on budgetary ... 
language
1.which factor is most helpful in helping technology to progress? a) unintended consequences b) a better understanding of the natural world c) riskbenefit analysis d)obsolete technologies 2. an oven is a technological system. which of the following describes into this system... 
Social Studies
Which of the following statements best describes a federal system of government? Independent states form an alliance and give up clearly defined and limited powers to a national government. The national government holds all power, creating and abolishing local governments as ... 
psychology
CannonBard view emotion as more than a response to physiological arousal. They suggest that... 1) the hippocampus and the spinal nerve produce emotion 2) both the cortex and the autonomic nervous system respond to the stimulus 3) emotion is the work of higher brain levels ... 
algebra
selling prices of homes can depend on several factors such as size and age the table shows the selling price these data may be modeled by the equation P=a+ba+cs Price (P) Age (A) Size(S) 190 20 2 320 5 3 50 40 1 (a) write system of linear equations whose solution gives a, b, c... 
Physics
San Francisco a very simple technique is used to turn around a cable car when it reaches the end of its route. The car rolls onto a turntable, which can rotate about a vertical axis through its center. Then, two people push perpendicularly on the car, one at each end. The ... 
Statistics
A local grocery store wants to estimate the mean daily number of gallons of milk sold to customers. Assume the number of gallons sold follows the normal distribution, with a population standard deviation of 5.10 gallons. A random sample of 60 days shows that the mean daily ... 
mathematics 1
How many cans each with a capacity of 3/8 gallons can be filled from 2 barrels of oil each containing 31 1/2 gallons? 
Physics SHM
Am self studying SHM, so sorry for the elementary questions. Would someone check/confirm some facts i think I've learned please. 1 If a sine wave graph starts at the origin at time = 0s, the sysyem is in equilibrium? 2 The amplitude at t= 0s is zero. 3 Same system, the phase ... 
Social Impact of Technology
From Brad Reid’s perspective, with respect to establishing a just and virtuous social order, how does he characterize the role of the legal system in the world of business? A. It is a vital tool when properly applied. B. It can be effective, but only when competitors agree ... 
science
When you freeze water, 80 calories of heat are released into the surroundings for every gram of water that freezes. This is known as the "latent heat of fusion" of water, which is 80 cal/g. Heat of fusion is a characteristic property. Theoretically, if you could "capture" all ... 
Health (Ms. Sue)
1. Compare three types of hereditary diseases. A: Singlegene diseases occur when 1 gene out of the 30,000 to 40,000 genes in the body has a harmful mutation, whereas in complex diseases, more than one gene influences the onset of the disease. However, chromosomal diseases can... 
Physics
A mixture of gasoline vapor and air is placed in an engine cylinder. The piston has an area of 7.4 x 10^3 m^2 and is displaced inward by 7.2 x 10^2 m. If 9.5 x 10^5 Pa of pressure is placed on the piston, how much work is done during this process? Is work being done on or by... 
Chemistry
Is water neutral in terms of the charges it holds? 
calculas
Consider a cooling cup of coffee whose initial temperature is 205°. The room temperature is held at 70°. Suppose k = 1/16. Let y be the temperature, and y' its time derivative.  I have the differential equation: y' = (1/16)(y70) Initial ... 
physic
A 2000 kg car is traveling at 20.0 m/s. Then, it puts on the brakes and comes to a complete stop. The heat generated due to the stopping heats up the brakes. The mass of the brake system is 20.0 kg and it has a specific heat of 0.200 kcal/kg °C. What is the increase in the ... 
Chemistry
A solution of barium chromate is prepared by dissolving 6.3 x 103 g of this yellow solid in 1.00 L of hot water. Will solid barium chromate precipitate upon cooling to 25°C? Proof? You want to compare Qsp to Ksp (at 25o C.) Ag2CrO4(s) ==>2Ag^+ + CrO4^= Ksp = (Ag^+)^2(CrO4... 
Chemistry
Diethyl ether has a boiling point of 34.5C, and 1butanol has a boiling point of 117C. Both of these compounds have the same numbers and types of atoms. Explain the difference in their boiling points. The answer I found was that: only 1butanol can form hydrogen bonds. But I ... 
physics
A rule of thumb for automobile collisions against a rigid barrier is that the collision lasts about .11 seconds, for any initial speed and for any model of automobile. accordingly, the deceleration experienced by an automobile during a collision is directly proportional to the... 
chemistry
How many gallons of 98% H2SO4 is necessary to neutralize 5000 gallons of NaOH? 
chem
a system udergoes a process consisting of the following 2 steps 1. absorbs 79J of heat while 26J of work is done to it 2. system absorbs 26J of heat while preforming 79J of work what is overall ÄE? is it 52J? 
Math Thanks
2 Eight children from the Schickel family are combining their savings to purchase a gaming system to connect to and play on their television. The gaming system is on sale at their favorite discount electronics store for 10 percent off of its regular price of $500. If the cost ... 
Computer Science
How would I put this into one program? These are the directions: Write a method that takes two parameters. If the first parameter is equal to second parameter. Multiply both and print result. If the first parameter is less than the second parameter, add the two and print the ... 
Physics Please check my answer
Okay, so I've figured this much out on my own, I just need help with the next part. It's a two block system with a friction of .20 a hanging mass of 7.5 kg and mass on the table at 10 kg. I got 3.08 m/s^2 for the acceleration and I got 22.8 N for the tension in the rope. This ... 
transcript
Hello!I would like that you transcribe me in english 2 audios document (they're very short 2 min the both)you can listen them if you write in search engine :for the first Genevieve : how I celebrate Thanksgiving &for the second Brigitte : Thanksgiving please,please do it for a...