# 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?

42,936 results, page 65-
## Math

A rectangular prism is completely packed with 180 cubes of edge length fraction 1 over 3 inch, without any gap or overlap. Which of the following describes the volume of this rectangular prism? 19 unit cubes and 9 smaller cubes of volume fraction 1 over 27

*asked by Ali on January 20, 2016* -
## physics

water flow dowen a sloping pipe.the pipe tapers from 2m diameter at the top (A)to 1.4 diameter at the bottom (B)the volume flow rate is 23m/s. 1)calculate the velocities of the flow at points A and B. 2)if the end A is 12m higher than end B, and the

*asked by bani adam on November 7, 2013* -
## chemistry

Household bleach contains (NaClO)2 that decomposes in water, NaClO + h2o = Na+ + OH- + Cl2 + O2 If 15ml bleach containing 5.85℅ NaClO is allowed to decomposes completely, then hoe many mL of o2 at 22C and 755mmHg can be liberated. Density of bleach=

*asked by Nancy on September 30, 2014* -
## English

1. An apple floats on water. 2. A coin sinks in water. 3. An apple floats on the water. 4. A coin sinks in the water. -------------------------- In #1 and in #2, 'water' is in generic use, right? What about in #3 and #4? What is the difference?

*asked by rfvv on October 11, 2017* -
## Chemistry

Hydrogen peroxide solution, H2O2(aq), is available with a concentration of 1.667mol/L. When diluted to a concentration of 0.25mol/L, the solution is used as a disinfectant. What volume of water should be added to 100 mL of the concentrated hydrogen

*asked by Lori on February 21, 2013* -
## Chemistry

what happens when NaCl(s) is dissolved in water? (1)Cl-ions are attracted to the oxygen atoms of the water (2)Cl-ions are attracted to the hydrogen atoms of the water. (3)Na+ions are attracted to the hydrogen atoms of the water. (4)no attractions are

*asked by Tina on February 13, 2011* -
## Calculus

A cylindrical drum is made to hold exactly 1m^3 in its interior. Assume that the material for the top and the bottom costs $20 per m^2, while that for the side costs $10 per m^2. Determine the radius of the drum that minimizes the cost of the material

*asked by Frederique on December 10, 2006* -
## chemistry

if the average concentration of PCBs in the body tissue of a human is 4.0 ppm, what mass of the PCB is present in a 64 kg person? is this a significant amount in regards to the health of the person? What is the concentration of a solution of sodium nitrate

*asked by Anonymous on January 11, 2015* -
## chemistry

if the average concentration of PCBs in the body tissue of a human is 4.0 ppm, what mass of the PCB is present in a 64 kg person? is this a significant amount in regards to the health of the person? What is the concentration of a solution of sodium nitrate

*asked by Anonymous on January 11, 2015* -
## physics

A car coasts (engine off) up a 30 degree grade. If the speed of the car is 25m/s at the bottom of the grade, what is the distance traveled by the car before it comes to rest?

*asked by Lorraine on September 16, 2012* -
## Physics

A rocket of 500 kg accelerates away from earth with an engine thrust of 13,500 N. a) what is the weight of the rocket? 4900 N b) how fast did the rocket accelerate? (I know the answer is 17.2 m/s^2 but how did they get that?)

*asked by Michelle on October 5, 2013* -
## chemistry

During which stroke of a four-stroke internal combustion engine is work done to the system of gases? A. Exhaust stroke B. Intake stroke C. Compression stroke D. Power stroke

*asked by Cortney on March 23, 2015* -
## Algebra/Geometry

Why are we able to develop the volume formula for cones from the volume formula for pyramids?

*asked by Tiffany on April 10, 2008* -
## Chem 100

If the initial volume is 150mL and the final volume is 1L, what is the final pressure?

*asked by Jen on March 1, 2012* -
## Chemistry

What can be concluded about Volume in milliliters per celsius, and volume in milliliters per kelvin?

*asked by Megan on October 4, 2012* -
## geometry

If given 2 spheres, if the volume of the first sphere is 3/4 and the volume of the second sphere is 36, which is the relation of the second radius to the first?

*asked by alex on May 22, 2011* -
## chem

A balloon was filled to a volume of 2.55 L when the temperature was 30.0∘C. What would the volume become if the temperature dropped to 11.0∘C.

*asked by a on November 30, 2015* -
## chemistry

A gas has a volume of 590mL at a temperature of -55.0C What volume will the gas occupy at 30.0C Can someone help me?

*asked by lee on January 31, 2013* -
## Math

What fraction of the volume of the rectangular prism is the volume of the rectangular pyramid?

*asked by Helen on April 3, 2016* -
## Algebra

a cylinder has a volume of 19cm^3. If the radius is doubled, what is the volume of the new cylinder? HOW TO DO THIS

*asked by JOhn on February 18, 2012* -
## Chemistry

At 25 C, the pressure and volume of a gas are 1.2 atm and 33 L. What is the volume of the gas at STP?

*asked by Meri on October 24, 2010* -
## algebra

The volume of a sphere is given by V=4/3pie cubed. What happens to the volume of a sphere if r is halved?

*asked by Steffy on March 20, 2010* -
## physics

The human body can survive a negative acceleration trauma incident (sudden stop) if the magnitude of the acceleration is less than (m/s2) If you are in an automobile accident with an initial speed of 101(km/h) and are stopped by an airbag that inflates

*asked by aisha on March 5, 2012* -
## Physics

Problem: A person has a reasonable chance of surviving an automobile crash if the deceleration is no more than 30 "g's. Part A: Calculate the magnitude of the force on a 71-kg person accelerating at this rate. Answer=> F= 2.09x10^4 N Part B: What distance

*asked by Ashley on December 15, 2016* -
## World History

Among the factors that brought about European colonialism, which of the following supported concepts of racial superiority? A. The introduction of the steam engine and the telegraph B. Social Darwinism C. Economic and trade opportunities D. the machine gun

*asked by Minerva Nall on October 27, 2014* -
## Chemistry

Hi, can you help with how to solve this equation? 50.0 gram sample of NaCl is added to water to create a 0.50 L solution. What volume of this solution is needed to create a 1.30 L solution that is 0.100 M NaCl? The choices provided: a) 152 mL b) 255 mL c)

*asked by Cassandra on April 3, 2015* -
## chemistry

What is the general form of a common automobile battery? How many electrodes does a car battery use? Does it use an acidic aqueous electrolyte solution? Is the battery rechargeable? Is the battery voltaic or electrolytic when discharging? Is the battery

*asked by Anonymous on April 27, 2012* -
## Chem-Temperature and Volume Relationships

What condition must be true when conducting temperature volume measurement? Why would a rubber balloon be a poor system for this kind of expirement? The general equation is (P1V1)/T1 = (P2V2)/T2 If V and T are being studied, then P must be held constant.

*asked by Chrissy on January 25, 2007* -
## Soil Chemistry

Chlorine is widely used to treat municipal water supplies and swimming pools. If the volume of a sample of Cl2 gas is 8.73L at 755mmHg and 24.0C, how many grams of Cl2 gas are in this sample? This is one of those multi step problems that I get lost....I

*asked by John on June 30, 2014* -
## Math

Two chemicals,A and B are combined in the ratio 5:11 by volume to form another solution X. A second solution Y is formed by combining chemicals, A,B and C in the ratio 2:3:15 by volume. Find the volume of chemical A in 400 litres of solution X and

*asked by Didin on November 15, 2016* -
## Geometry

I could really use some help with this problem because I'm pretty confused on what to do. The formula for the volume of a cone is V=1/3(pi)r^2h where v represents volume, r represents the radius of the base, and h represents the height. What is the height

*asked by Anna on September 14, 2014* -
## 8th grade homework

I could really use some help with this problem because I'm pretty confused on what to do. The formula for the volume of a cone is V=1/3(pi)r^2h where v represents volume, r represents the radius of the base, and h represents the height. What is the height

*asked by Anna on September 14, 2014* -
## chemistry

A sample of one liquid has a mass of 60 grams and a volume of 50 centimeters cubed; a sample of a second liquid has a mass of 30 grams and a volume of 40 centimeters cubed. They are put in a container and mixed. Can you determine what the mass and the

*asked by Ann on October 12, 2012* -
## chemistry

The air within a piston equipped with a cylinder absorbs 570J of heat and expands from an initial volume of 0.12L to a final volume of 0.88L against an external pressure of 1.0 atm. What is the change in internal energy of the air within the piston?

*asked by savannah on December 19, 2012* -
## math

a rectangular prism has a width of 92ft. and a volume of 240ft^3. Find the volume of a similar prism with a width of 23ft. Round to the nearest tenth if necessary. a)3.8ft^3 b)60ft.^3 c)15ft.^3 d)10.4ft.^3 I am totally cinfused by this. Can somebody please

*asked by Shannon on August 30, 2008* -
## chemistry

Hi DrBob222, this is regarding my Determining Ka of Acetic acid lab I talked about on April 5, 2008. Refer to the volume of NaOH on your graph from question 2. Calculate half this volume and on your graph, find the pH when the solution was half

*asked by Sarah on April 6, 2008* -
## cheminstry

A sample of neon gas has an initial volume of 2.5L at 300 K. What is the new temperature of the gas(both in K and Celsius degrees) if the pressure remains constant, when the volume is changed to each of the following values: a. 5.00L b. 7.50L c. 1.50L d.

*asked by marielis on April 7, 2015* -
## science

how do i ansewr this question? An aerosol spray can with a volume of 400. mL contains 2.25 g of propane gas (C3H8) as a propellant (a) If the can is at 31°C, what is the pressure in the can? (b) What volume would the propane occupy at STP? (c) The can's

*asked by Samantha on December 14, 2012* -
## chem1B

How many milliliters of 0.950M sodium hydroxide must be added to 35.0mL of 0.850M acetic acid to reach the equivalence point? should the volume of the hydroxide be the same as the volume of the acid because there is a 1:1 ratio? If so, how do I set up an

*asked by brenda on March 8, 2015* -
## Physics

A cube of solid aluminum has a volume of 1.00 m^3 at 20 degree C. What temperature change is required to produce a 100-cm^3 increase in the volume of the cube? I know you are supposed to use: DeltaV=Beta*Vo*DeltaT. But I don't know what Beta is and the

*asked by HELP on December 12, 2010* -
## chemistry

The air within a piston equipped with a cylinder absorbs 570J of heat and expands from an initial volume of 0.12L to a final volume of 0.88L against an external pressure of 1.0 atm. What is the change in internal energy of the air within the piston?

*asked by savannah on December 19, 2012* -
## science

A scientist makes the measurements shown in the data table below. She needs to know the total volume of her other samples. which of the following shows the total volume reported with the correct number of digits and units. Samole A 12.14 ML Sample B 3.400

*asked by China one on September 15, 2015* -
## Math

A tank in the shape of a cone has a diameter of 8 feet and a height of 10 feet.when there is water in the tank, th water is in the shape of a cone too. find the radius of the cone of water when the water is 2 feet high. Explain how you would solve it.

*asked by Cynthia on August 3, 2010* -
## m\

The path of water from a hose on a fire tugboat can be approximated by the equation y = −0.0055x2 + 1.2x + 10, where y is the height, in feet, of the water above the ocean when the water is x feet from the tugboat. When the water from the hose is 3 feet

*asked by jatin on October 8, 2016* -
## physics help

An automobile tire has a radius of 0.280 m, and its center moves forward with a linear speed of v = 18.0 m/s. (a) Determine the angular speed of the wheel. (Assume that there is no slipping of the surfaces in contact during the rolling motion.) rad/s (b)

*asked by john on November 27, 2010* -
## physic

Suppose 0.0150 kg of steam (at 100.00°C) is added to 0.150 kg of water (initially at 19.3°C.). The water is inside a copper cup of mass 54.1 g. The cup is inside a perfectly insulated calorimetry container that prevents heat flow with the outside

*asked by help me please on April 8, 2011* -
## Physics

Suppose 0.015 kg of steam (at 100.00 °C) is added to 0.20 kg of water (initially at 14.0°C). The water is inside an aluminum cup of mass 40 g. The cup is inside a perfectly insulated calorimetry container that prevents heat exchange with the outside

*asked by Anonymous on December 8, 2014* -
## Chemistry

The Label on a one pint bottle of water lists the following components. If the density is the same as pure water and you drink 3 bottles of water in one day, how many milligrams of each component will you obtain? 1) calcium 29 ppm 2)fluoride .09 ppm

*asked by Susan on September 7, 2008* -
## Biology

Are these correct? Cohesion=Water molecules stick to the side of a straw because of this attractive force. Adhesion=Liquid mercury forms drops because of this attractive force Polarity=This property of water enables salt to dissolve in water Base=This is a

*asked by mysterychicken on January 27, 2010* -
## physics

Suppose 0.0150 kg of steam (at 100.00°C) is added to 0.150 kg of water (initially at 19.3°C.). The water is inside a copper cup of mass 54.1 g. The cup is inside a perfectly insulated calorimetry container that prevents heat flow with the outside

*asked by John on April 5, 2011* -
## AP Chemistry

A typical bathtub can hold 94 gallons of water. Calculate the mass of natural gas that would need to be burned to heat the water for a tub of this size from 59 ◦F to 101 ◦F. Assume that the natural gas is pure methane (CH4) and that the products of

*asked by David on October 26, 2016* -
## physics

Suppose 0.0150 kg of steam (at 100.00°C) is added to 0.150 kg of water (initially at 19.3°C.). The water is inside a copper cup of mass 54.1 g. The cup is inside a perfectly insulated calorimetry container that prevents heat flow with the outside

*asked by please help me on April 5, 2011* -
## chemistry-calorimetric

Develop a detailed calorimetric method for determining the temperature of the warm water sample. Materials: Hot water sample of unknown temperature, Styrofoam cups with cardboard lid and stirrer, Thermometer, Pipets and burets, balance, ice, cold water,

*asked by Cerra on October 19, 2010* -
## physics

Suppose 0.0290 kg of steam (at 100.00°C) is added to 0.290 kg of water (initially at 19.7°C.). The water is inside an aluminum cup of mass 44.7 g. The cup is inside a perfectly insulated calorimetry container that prevents heat flow with the outside

*asked by jason on April 9, 2011* -
## Chemistry

1. How would using 0.42 g CH3CO2Na * 3H2O instead of the amount called for in the procedure change the theoretical yield of Fe(C5H7O2)3 = 3.53g. 2. When a student sees crystals form after she added a few drops of water to the filtrate. Need chemical

*asked by Anonymous on October 29, 2012* -
## Algebra HELP!!

Water coming out from a fountain is modeled by the function f(x) = -x^2 + 8x + 2 where f(x) represents the height, in feet, of the water from the fountain at different times x, in seconds. What does the average rate of change of f(x) from x = 1 to x = 4

*asked by Dina M on January 18, 2015* -
## Algebra

Water coming out from a fountain is modeled by the function f(x) = −x2 + 8x + 2 where f(x) represents the height, in feet, of the water from the fountain at different times x, in seconds. What does the average rate of change of f(x) from x = 1 to x = 4

*asked by memelord on April 14, 2017* -
## MATH

Find the volumes of the solids generated by revolving the region in the first quadrant bounded by the following about the given axes. x = y - y3, x = 1, y = 1 (b) Revolved about the y-axis ? Hi Shawn, 97/105 * pi ? :) We need to cut away the volume of the

*asked by Shawn on February 9, 2007* -
## Science

I have been waiting for 30 minutes and noone has answered this question. Please help me! Describe the method you would use to separate eachg mixture. Methods: Picking apart, filtering, using density, using magnetism, dissolving, evaporating. a)sand and

*asked by Saquta on December 16, 2010* -
## Chem - Molarity

Hi, I have this question related to Molarity and hoping you can help? The question says: 50.0 gram sample of NaCl is added to water to create a 0.50 L solution. What volume of this solution is needed to create a 1.30 L solution that is 0.100 M NaCl? It

*asked by Cassandra on April 22, 2015* -
## math

. Find the volume of the sphere with a radius of 9. Use ð = 3.14 and round your answer to the nearest tenth. 4. Find the volume of an ellipsoid with a semi-major axis of length 10 and the first semi-minor axis has length of 6 while the second semi-minor

*asked by BreAnna on April 18, 2011* -
## Chemistry

you are a public health officer in the water treatment facility for a city of 50,000 people . A concentration of 1.0 ppm of fluoride in the drinking water is sufficient for the purpose of helping to prevent tooth decay. The compund normally chosen for

*asked by Anonymous on October 1, 2015* -
## CHEMISTRY HELP!!

We know that chloroform does not dissolve or mix with water. But why does chloroform, under some conditions, dissolve in a mixture of acidic acid and water? Do you mean acetic acid? whoops sorry, i think it is suppose to be acetic acid. I would imagine

*asked by Amy on March 26, 2007* -
## physics

Hi, could anyone help me please, Thank. Gas in a container is at a pressure of 1.3 atm and a volume of 1.0 m3. (a) What is the work done on the gas if it expands at constant pressure to twice its initial volume? (b) What is the work done on the gas if it

*asked by Chan on December 6, 2009* -
## physics

Hi!could anyone help me please, Thank. Gas in a container is at a pressure of 1.3 atm and a volume of 1.0 m3. (a) What is the work done on the gas if it expands at constant pressure to twice its initial volume? (b) What is the work done on the gas if it is

*asked by Chan on December 7, 2009* -
## English

Can you please check if my rephrasing is correct? Thank you. 1)Coketown was made of red brick (not bricks). It was full of machinery and tall chimneys, from which smoke coiled up like snakes (I rephrased " "out of which interminable serpents of smoke

*asked by Franco on January 12, 2011* -
## physics

A car is coasting backwards downhill at a speed of 2.6 m/s when the driver gets the engine started. After 2.5 s, the car is moving uphill at 4.6 m/s. Assuming that the uphill is the positive direction, what is the car's average acceleration?

*asked by LIZZIE on September 18, 2012* -
## Physics

A model rocket is launched from rest with an upward acceleration of 6.30 m/s2 and, due to a strong wind, a horizontal acceleration of 1.50 m/s2. How far is the rocket from the launch pad 5.30 s later when the rocket engine runs out of fuel?

*asked by Jeff on September 9, 2015* -
## physics

A car is coasting backwards downhill at a speed of 3.2 m/s when the driver gets the engine started. After 2.5 s, the car is moving uphill at 5.0 m/s. Assuming that the uphill is the positive direction, what is the car's average acceleration?

*asked by javane on November 26, 2010* -
## Engines

How do i find total displacement in in^3/min if i have the bore and stroke and and rpm and number of cylinder. i can calculate piston and engine displacement and compression ratios but just not sure about TOTAL displacement and the rpms?

*asked by Matt on September 26, 2006* -
## physics

The engine of a 1250 kg car provides a forward directed force of 3,560 N. If the car accelerates at a rate of 2.60 m/s2, what is the total resistive force (wind resistance, friction, etc.) acting on the car?

*asked by nate on September 13, 2012* -
## physics

1. A car is coasting backwards downhill at a speed of 3.0 m/s when the driver gets the engine started. After 2.5 s, the car is moving uphill at 4.5 m/s. Assuming that uphill is positive direction, what is the car’s average acceleration?

*asked by asa on June 7, 2013* -
## PHYSICS

The engine of a 1250 kg car provides a forward directed force of 3,560 N. If the car accelerates at a rate of 2.60 m/s2, what is the total resistive force (wind resistance, friction, etc.) acting on the car?

*asked by John on September 13, 2012* -
## Calculus

Given a right circular cone, you put an upside-down cone inside it so that its vertex is at the center of the base of the larger cone, and its base is parallel to the base of the larger cone. If you choose the upside-down cone to have the largest possible

*asked by Mishaka on December 16, 2011* -
## Geology

Imagine that the gasoline that you are burning in your car this week was refined from petroleum that was produced from jurassic-age rocks in Arkansas. What is the primary source of energy that has been reclaimed to power your car? Explain. Hint: What is

*asked by JAYJAY on July 4, 2010* -
## calc

the volume of a cylindrical tin can with a top and a bottom is to be 16*pi cubic inces. if a minimum amont of tin is to be used to construct the can, what must be the height, in inches, of the can? volume of cyliner is pi*r^2*h do i like take derivitive of

*asked by david on December 8, 2006* -
## physics

Proper design of automobile braking systems must account for heat buildup under heaving braking. Calculate the thermal energy dissipated from brakes in a 1460-kg car that descends a 15.5° hill. The car begins braking when its speed is 92 km/h and slows

*asked by Johnathon on February 14, 2011* -
## physics

If 7.00hp are required to drive a 1500-kg automobile at 66.0 km/h on a level road. What power is necessary to drive the car at 66.0 km/h down a 1.00 % grade? It requires 42.9 hp to drive the car at 66.0 km/h up a 10.0 % grade (a hill rising 10.0 m

*asked by Allison on May 5, 2011* -
## Physics

If 7.00hp are required to drive a 1500-kg automobile at 66.0 km/h on a level road. What power is necessary to drive the car at 66.0 km/h down a 1.00 % grade? It requires 42.9 hp to drive the car at 66.0 km/h up a 10.0 % grade (a hill rising 10.0 m

*asked by Allison on May 4, 2011* -
## word riddle help please

to find the clue you must search the text Cause in the Late evening when dark is dim and Peaches are gray walk 1 north and then head east, till you find the pretty thing and tell me what it is! Without the text that needs to be searched, we cannot help

*asked by sharon on December 11, 2006* -
## Physics

Proper design of automobile braking systems must account for heat buildup under heaving braking. Calculate the thermal energy dissipated from brakes in a 1360-kg car that descends a 13.5° hill. The car begins braking when its speed is 88 km/h and slows

*asked by Thomas on February 12, 2013* -
## social studies? i think idk

what new ideas came from the automobile? plz help plz plz plz ASAP

*asked by Geena on December 5, 2015* -
## physics

A 3.6 kg rock is initially at rest at the top of a cliﬀ. Assume that the rock falls into the sea at the foot of the cliﬀ and that its kinetic energy is transferred entirely to the water. How high is the cliﬀ if the temperature of 1.1 kg of water is

*asked by Anonymous on February 12, 2015* -
## Chemistry

The density of pure gold is 19.3 g/centimeter cube. A quantity of what appears to be gold has a mass of 465 grams and a volume of 26.5 mL. Is the substance likely to be pure gold? please tell me how you got your answer. Thanks! density = mass/volume You

*asked by Sarah on February 15, 2007* -
## Stoichiometry problem

I'm stuck and am hoping you can help. Here is the problem: You react 7.92 grams of silver nitrate, AgNO3(aq), with an excess of sodium chloride, NaCl(aq). How many grams of silver chloride, AgCl(s), will precipitate from the solution? Any help would be

*asked by Rachel on September 9, 2006* -
## Chemistry

1) Determine the Kc for the following experimental conditions: compound A+compound B --> Compund D Compound: A B M 0.003 0.0023 Volume used: 5 mL 8 mL Total volume = 25 mL, using graph 2 and a %T of 24 for compund D molecular weight compund D = 535 g/mol

*asked by Anonymous on March 4, 2013* -
## CHemistry....Please help...DrBobb

I posted this up yesterday: I have to use the equation : density= mass/ volume: But i don't know how to find out the volume using the edge length of the unit cell which is 5.88* 10^2 pm. CHemistry....Please help - DrBob222, Sunday, January 25, 2009 at

*asked by Saira on January 26, 2009* -
## Chemistry

In a titration for the determination of the chloride ion, a solution of 0.1M agno3 is used against a solution, the volume of which is 100ml. At the completion of the titration, the residual concentrations of silver and chloride ions are equal and the total

*asked by Michelle on October 22, 2014* -
## algebra

The rate at which water evaporates from a certain reservoir depends on the air temperature. The table below shows the number of acre-feet (af) of water per day that evaporate from the reservoir for various temperatures in degrees Fahrenheit. Temperature,

*asked by Jesse on October 25, 2014* -
## Langauge Arts

What is the best paraphrase of the final stanza? A. The water slows until it reaches its destiny, a place not too different from mine, where the water stretches to meet the sky. Other people use it like a mirror. They fish and think here. B. The water

*asked by Callie on February 25, 2015* -
## analytical chemistry

Predict the effect (Increase, Decrease, No effect, Indeterminate)and explain why 1. Condition: In the determination of water hardness, the water sample contained appreciable amount of ferric ions Paameter: ppm CaCO3 2. Condition: Instead of MgCl2*H2O,

*asked by :kkk: on August 31, 2007* -
## chemistry

Predict the effect (Increase, Decrease, No effect, Indeterminate)and explain why 1. Condition: In the determination of water hardness, the water sample contained appreciable amount of ferric ions Paameter: ppm CaCO3 2. Condition: Instead of MgCl2*H2O,

*asked by :kkk: on August 31, 2007* -
## PHYSICS 102E

1. A glass flask whose volume is exactly 1000cm^3 at 0 degrees Celsius is completely filled with mercury at this temperature. When the flask and mercury are heated to 100 degrees Celsius, 15.2cm^3 of mercury overflow. If the coefficient of volume expansion

*asked by Akitsuke on December 13, 2008* -
## chemistry

A student estimated the volume of liquid in a beaker as 200 mL. When she poured the liquid into a graduated cylinder, she measured the volume as 216 mL. What is the percent error of the estimated volume from the beaker, taking the measurement in the

*asked by paul on October 2, 2011* -
## Chemistry

A quantity of ice at 0.0°C was added to 25.6 g of water at 21.0°C to give water at 0.0°C. How much ice was added? The heat of fusion of water is 6.01 kJ/mol and the specific heat is 4.18 J/(g · °C). I don't understand how to set this problem up (what

*asked by Ryan on October 8, 2008* -
## Science

The global water cycle provides renewable water, but a number of factors affect how much freshwater is available for human consumption. Describe these factors and circumstances. When do human interventions in water availability pose serious problems to

*asked by Tameika on October 10, 2011* -
## Chemistry

The concentration of Ca2+ in a particular water supply is 5.7×10−3M. The concentration of bicarbonate ion, HCO−3, in the same water is 1.7×10−3M. What masses of Ca(OH)2 and Na2CO3 must be added to 5.6×107L of this water to reduce the level of Ca2+

*asked by Rebecca on March 25, 2014* -
## chemistry

Calculate the vapor pressure of a solution containing 28.7g of glycerin (C3H8O3) in 136mL of water at 30.0 ∘C. The vapor pressure of pure water at this temperature is 31.8 torr. Assume that glycerin is not volatile and dissolves molecularly (i.e., it is

*asked by Emily on November 23, 2014* -
## Chemistry

A quantity of ice at 0.0°C was added to 25.6 g of water at 21.0°C to give water at 0.0°C. How much ice was added? The heat of fusion of water is 6.01 kJ/mol and the specific heat is 4.18 J/(g · °C). I don't understand how to set this problem up (what

*asked by Ryan on October 8, 2008* -
## physics

How do you do this problem? The water used in many fountains is recycled. For instance, a single water particle in a fountain travels through an 85 m system and then returns to the same point. What is the displacement of a water particle during once cycle?

*asked by Anonymous on September 17, 2006*