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?

42,689 results, page 21
1. Science

Which of the following contain water that is easily available for human use? (more than one answer) Icecaps & glaciers - 76% of fresh water Shallow Groundwater- 12% of fresh water Deep Groundwater - 11% of fresh water Lakes & Rivers - 0.34% of fresh water

asked by Anya on January 15, 2010
2. ChemII

A saline solution is 0.9% NaCl. What masses of NaCl and water would be required to prepare 50. L of this saline solution? Assume that the density of water is 1.000g/mL and that the NaCl does not add to the volume of the solution.

asked by Eric on January 10, 2011
3. physics

1. You allow a gas to expand freely from volume V to volume 2V. Later you allow the gas to expand freely from volume 2V to volume 3V. Is the net entropy change for these two expansions greater than, less than, or equal to the entropy change that would

asked by chx on January 23, 2012
4. thermodynamics

You allow a gas to expand freely from volume V to volume 2V. Later you allow the gas to expand freely from volume 2V to volume 3V. Is the net entropy change for these two expansions greater than, less than, or equal to the entropy change that would occur

asked by chx on January 23, 2012
5. physics

Two identical containers are open at the top and are connected at the bottom via a tube of negligible volume and a valve which is closed. Both containers are filled initially to the same height of 1.00 m, one with water, the other with mercury, as the

asked by joseph on December 4, 2010
6. physics

Two identical containers are open at the top and are connected at the bottom via a tube of negligible volume and a valve which is closed. Both containers are filled initially to the same height of 1.00 m, one with water, the other with mercury, as the

asked by maria on December 6, 2010
7. chemistry

2. 0.300 kilogram chloroform(chlorine calcium3)and 21.0grams eucalyptol(carbon10 hydrogen18 oxygen 3. what is the concentration of a solution of sodium chlorine water containing 1.170grams solute in 100moles solution 4, what is the % by volume of a

asked by juzen on September 14, 2010
8. Physics

A 10cm times 10cm times 10cm wood block with a density of 700kg/m^{3} floats in water. What is the distance from the top of the block to the water if the water is fresh? weight= density*volume*g weight=700*(10^-3)*9.81 weight=3418.877985

asked by ana on November 17, 2009
9. Chemistry

Determine the atomic weight of X in the following compounds a)8g XH4 occupy 44.8L volume at 237C and 380 mmHg pressure b)1.92g of X3 occupis a volume of 574 ml at 77C and 2 atm c)A O.326 gram of gas,C3X4 has a volume of 250 ml at100C and 76 cmHg d)A 3.12

asked by faisal on March 11, 2012

1) In 2011, the total of all residential customers in Halton Region used 54 540 000 m3 of water. Halton Region has a population of around 500 000 people and Milton (part of Halton Region) has a population of around 85 000 people. Assuming all people in

asked by sara on November 16, 2014
11. Home Economics

Produced from a blend of cheeses and America's most popular cheese Surely the answers to all these questions are in your textbook or in your notes from classes. (You do take notes in class, right?) If all else fails, put your main keywords into the search

asked by Liz on October 19, 2006
12. Science

A family is planning to build a raised planting area using a blend of peat moss, mulch, and a rich organic soil in which to grow the plants. they have been told first to place on the ground a layer of material that will allow for a proper drainage each

asked by Jen on September 21, 2016
13. ChemistryDrBob222

Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar the solution has a density of 1.38 grams per milliliter. This concentration of H2SO4 is often used in lead storage

asked by Kevin on January 13, 2011
14. Chemistry

In TDS experiment , the mass of the empty beaker was 25.683g , and the mass of the beaker after water evaporated 25.687 g , if the volume of the sample 50 ml , then the TDS of the water sample is ?

asked by Mariam on April 20, 2014
15. Physics

A heat engine carries 2.60 mol of an ideal monatomic gas around the cycle shown in the figure. Process 1-2 takes place at constant volume and takes the gas from 300 K to 600 K, process 2-3 is adiabatic and takes the gas from 600 K to 455 K, and process 3-1

asked by Anonymous on April 20, 2015
16. chemistry

A volume of 115 mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water. If the final temperature of the system is 21.40 ∘C , what is the mass of the steel bar? Use the following values: specific

asked by myah on October 19, 2016
17. Physics

Water flows under pressure from one pipe into a second pipe having half the diameter. The volume flow rate in the narrow pipe is ________ that in the wide pipe, and the speed of the water in the narrow pipe is _______ that in the wide pipe

asked by Amity on February 4, 2011
18. Chemistry

A sample of gas occupies a volume of 63.1 mL. As it expands, it does 130.4 J of work on its surroundings at a constant pressure of 783 torr. What is the final volume of the gas? I know that P= 1.03 ATM when converted. I think I'm supposed to use the

asked by Anonymous on January 31, 2013
19. physics

Water is flowing in a pipe with a circular cross-section area ,and at all point the water completely fills the pipe.At point 1 ,the cross sectiona are of pipe is 0.070 meter square and the fluid velocity is 3.50 meter per second. a.) what is the fluid

asked by cathrena on January 10, 2017

Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. Each dish in the figure

asked by Anonymous on December 4, 2012
21. Chemistry 12

Hi, I did the acid-base titration lab with HCl and 0.5M NaOH. I need to calculate the moles of NaOH from molarity of NaOH and the average volume used. My English isn't good but is it asking me to find the moles of NaOH using the molarity of NaOH and the

asked by Kim on June 3, 2015
22. Chemistry

when 0.20 mole HF is dissolved in water to a volume of 1.00 L, 5.8% of the HF dissociates to form F- (aq). What is the equilibrium constant for the reaction ? HF(aq) + H2O (I) ----- F- (aq)+H3O+(aq)

asked by Elmali on April 5, 2012
23. science

the volume of 50gram of a substance is 20centimetercube if the density of water is 1gram/centicentimetercube will the object float or sink

asked by rahul sharma on October 26, 2016
24. Physics

Suppose a cube that measures 0.020 m on each side were made of water. Find its volume, mass, and weight.

asked by May on March 9, 2011
25. Physics

A 70-kg ancient statue lies in the bottom of the sea. It’s volume is 3.0 x 10 4 cm 3 How . much force is needed to lift it? (Use g=10 m/s 2 and the density of water is 1.0 x 10 3 kg/m 3

asked by Force on February 11, 2011
26. Chemistry

What volume of distilled water should be added to 400cm3 of 2.0mol/dm 3 H2SO4 to obtain 0.20mol/dm3 of solution

asked by Joy on August 2, 2018
27. Chemistry

If I have storage tank containing 3.8 X 10E5 liters of water that is contaminated with NaOH and has a pH of 10.82. What volume of 0.1 M HCl is required to bring the pH= 7.0?

asked by Nicole on June 21, 2012

If the volume of water produced during the reaction doubled, what would happen to the ratio of hydrogen to oxygen in the following equation: 2 H2+ O2 --> 2 H2O

asked by bernice on November 29, 2010
29. AP Chemistry

What volume of water was added to the 350 mL of NaOH solution? Assume volumes are additive. Answer in units of mL

asked by Gabriella on September 11, 2013
30. chemistry

An old bottle of 12.3 M hydrochloric acid has only 33 mL left in it. What is the HCl concentration if enough water is added so that the final volume is 513 mL?

asked by masin on November 29, 2010
31. Science

Two students discover that 500g of water occupies a volume of 50mL. Is this result correct? Explain your answer.

asked by Anonymous on March 22, 2017
32. chemistry

what volume of physiological saline solution (0.90% by weight NaCl, in water) would give you a gram of salt when evaporated?

asked by jemmie on January 18, 2011
33. chemistry

What volume of water was added to the 350 mL of NaOH solution? Assume volumes are additive. Answer in units of mL

asked by cheri on September 19, 2012
34. organic chemistry

What volume of physiological saline solution (90% by weight NaCl, in water) would give you a gram of salt when evaporated?

asked by tina on January 23, 2011

What mass of propanoic acid, CH3CH2COOH, pKa= 4.87, should be dissolved in water to 2.00L volume in order to produce a pH of 2.50? THANKS! -J

asked by Jude on February 13, 2009
36. Chemistry

If 5 ml of sulphuric acid is diluted to 135 ml of water, what is the volume and concentration of sodium hydroxide to neutralize the solution?

asked by Rachelle on May 8, 2018

What mass of propanoic acid, CH3CH2COOH, pKa= 4.87, should be dissolved in water to 2.00L volume in order to produce a pH of 2.50? THANKS! -J

asked by Jude on February 12, 2009
38. physics

Describe briefly how the volume of a given mass of water changes when it is cooled from 7 ^0 C to 1^0 C use the terms increase, decrease and maximum or minimum

asked by anil on October 4, 2011
39. chemistry

Molarity of the solution that results when 71.3 g silver nitrate is dissolved in enough water to give a final volume of 757 mL.

asked by Anonymous on February 14, 2011
40. chemistry

Molarity of the solution that results when 71.3 g silver nitrate is dissolved in enough water to give a final volume of 757 mL.

asked by Anonymous on February 14, 2011
41. Science

Two students discover that 500g of water occupies a volume of 50mL. Is this result correct? Explain your answer.

asked by Anonymous on March 21, 2017
42. Chemistry

when 0.20 mole HF is dissolved in water to a volume of 1.00 L, 5.8% of the HF dissociates to form F- (aq). What is the equilibrium constant for the reaction ? HF(aq) +H2O(l) ------ F- (aq) +H3O+ (aq)

asked by emily on April 5, 2012
43. physics

Describe briefly how the volume of a given mass of water changes when it is cooled from 7 ^0 C to 1^0 C use the terms increase, decrease and maximum or minimum

asked by anil on October 4, 2011
44. Inorganic Chemistry

I messed up on my titration: filled part of the burette with a supersaturated solution of KHTar(2.073g...MM=188.18amu) dissolved in 150mL diH2O, instead of the 0.051M NaOH solution. I know it wasn't more than a few mL, but I noticed a huge difference in

asked by Christina (PLZ HELP!!) on July 14, 2011
45. Physics

A helicopter carrying Dr. Evil takes off with a constant upward acceleration of 5.0 m/s2. Secret agent Austin Powers jumps on just as the helicopter lifts off the ground. After the two men struggle for 10.0 s, Powers shuts off the engine and steps out of

asked by Ko on March 8, 2015
46. Chemistry

Help please? 1)A sample of propane gas occupies 625 cm3 at 20.0 °C and 750 torr. What is the final volume in cubic centimeters at -80.0 °C and 750 torr? 2)If oxygen gas is collected over water at 25 °C and 775 torr, what is the partial pressure of the

asked by May on April 17, 2014
47. Chem

You have 25.00 mL of 3% by mass solution of hydrogen peroxide. Assume the density of this solution is 1.00 g/mL. If all of the hydrogen peroxide decomposes to water and oxygen according to the reaction below: 2H2O2 (aq) 2H2O (l) + O2 (g) What is the total

asked by Blake on September 21, 2015
48. Chemistry

A piece of solid magnesium is reacted with hydrochloric acid to form hydrogen gas: Mg (s) + 2HCl (aq) ---> MgCl2 (aq) + H2 (g) What volume of hydrogen gas (in mL) is collected over water at 25 degrees Celsius by reaction of 0.450 g of Mg (AW= 24.3 g/mol)

asked by Student on March 8, 2016
49. Chemistry-DrBob222

A piece of solid magnesium is reacted with hydrochloric acid to form hydrogen gas: Mg (s) + 2HCl (aq) ---> MgCl2 (aq) + H2 (g) What volume of hydrogen gas (in mL) is collected over water at 25 degrees Celsius by reaction of 0.450 g of Mg (AW= 24.3 g/mol)

asked by Student on March 8, 2016

A swimmin bath has verticle sides and the floor slopes uniformly so that, when the bath is full, the water is 1m deep at the shallow end and 4m deep at the other end. If the bath is 25m long and 12m wide, calculate the volume of the water in the bath when

asked by Jnr John on July 21, 2013
51. Prisms

A swimmin bath has verticle sides and the floor slopes uniformly so that, when the bath is full, the water is 1m deep at the shallow end and 4m deep at the other end. If the bath is 25m long and 12m wide, calculate the volume of the water in the bath when

asked by Jnr John on July 9, 2013
52. science

an you please solve the questions for me 1. 3 moles of pesticide of molecular mass 200 g/mole is applied to a closed system consisting of 20 m3 of water, 10 m3 of air, 1 m3 of sediment, and 0.001 m3 of fish. Determine the concentration and amount in both

53. Chemistry

I am having trouble getting this starting and figuring out the correct steps...the problem is Calculate the final concentration of the solution in each question 1) Water is added to 0.270 L of a 6.00M HCl solution to give a volume of 3.00 L (Express

asked by TT on December 10, 2010
54. Food Analysis

1.If 0.5l of 5M solution of CU(NO3) is diluted to a volume of 0.80l by adding water, what is the molarity of the resulting diluted solution? 2.How many ml of water will be required to dilute 11ml of 0.45Macid solution to a molarity of 0.1M? 3.Calculate the

asked by Sarah on March 8, 2011
55. PHYSICS HELP

a cube of wood with a density of 0.78g/cm^3 is 10cm on a side. When placed in the water what height will the block float above the surface? what am i doing wrong here: height= Desity of cube* volume of cube and devide by the density of water * area of the

asked by PHYSICS HELP on November 14, 2007
56. English

Everyone knows that water is important. Who doesn’t like to drink a cool glass of water after a long day? But some people don’t seem to worry about polluting the local water supply. They should! I like water, and so should everyone else. What change

57. Physics

A light–rail commuter train draws 635 A of 640–V DC electricity when accelerating. What is its power consumption rate in kilowatts? (in kW) 406 kW You are correct. How long does it take to reach 30.0 m/s starting from rest if its loaded mass is

asked by Ashton on September 14, 2014
58. Chemistry

Help needed with a calorimeter lab. I have to measure the enthalpy of a neutralization reaction between NaOH and HCl as well as find the concentration of NaOH the following ways. - using the mass and volume of NaOH - Using calorimetric data assuming no

asked by Bibi on November 17, 2014
59. physics(gas laws)

Got a question 3. Given 325 ml of saturated gas at 760 mmHg and 25°C, what would be its volume if dry at the same pressure and temperature? I got confused when I read 'if dry' Does that mean I have to subtract something out of 760mmHg? And would I used

asked by abby on January 28, 2008
60. Pre-Calc

A vehicle has an engine that is connected directly to a gear box. In the highest gear, a 2 inch radius gear is turning a 14 inch diameter gear. This gear is connected to the drive shaft. The drive shaft attaches to a wheel and a tire that measures 2 and

asked by Caitlynn on September 14, 2016
61. science

how is a living thing and an automobile alike in carrying out life processes?

asked by Faith on August 20, 2008
62. Physical Science

What is the kinectic energy in joules of a 500kg automobile traveling at 45km/hr?

asked by Patience on March 28, 2012
63. physics

What is the momentum of an automobile (weight = 9800 N) when it is moving at 36 m/s to the south? magnitude

asked by Gino on June 19, 2011
64. Economics

How does the automobile industry answer thr basic economic questions?

asked by Aubrey on November 10, 2009
65. physics

an automobile travels at a uniform speed of 88 kph. how many metres does it travel in 1 second?

asked by leyfushie on July 27, 2013
66. physics

What net force is needed to accelerate a 1.6 × 103kg automobile forward at 2.0 m/s2?

67. Physics

What is the kinetic energy of an automobile with a mass of 1250 kg traveling at a speed of 11 m/s?

asked by glenn on April 14, 2010
68. Physics

An automobile uniformly accelerates from rest at 15 ft/s2 for 6s. What is the fanal velocity in ft/s? v=d/t 15 *6= 90 90ft/s

asked by RP on September 27, 2015
69. chemistry

What is the density of a sample of 65.0mL of automobile oil having a mass of 59.82g

asked by tina sayers on October 1, 2012
70. physics

If the kinetic energy of an automobile triples because of a speed change, it momentum is ?

asked by titu on April 21, 2015
71. science

Which component of the technological system is achieved when an automobile airbag inflates?

asked by yaya on October 23, 2014
72. Physics

calculate the kinetic energy, in J, of a 1200kg automobile travelling at 36km/h

asked by john on April 7, 2010
73. Chemistry

A 25.00 ml sample of a standard solution containing 1 g of CaCO3/L required 25.20 ml of EDTA to fully complex the Ca present. Calculate the volume of EDTA stoichiometrically equivalent to 1.0 mg of CaCO3. From the volume of EDTA required in titrating the

asked by Anonymous on March 15, 2010
74. physics

i need help figuring out what formaula to use for finding the final velocity of a rocket. Model rocket engines are sized by thrust, thrust duration, and total impulse, among other characteristics. A size C5 model rocket engine has an average thrust of 5.26

asked by sonia on October 8, 2008
75. Chemistry

A portable electric water heater transfers 255 watts (W of power to 5.5 L of water, where 1 W=1J/s.How much time (in minutes) will it take for the water heater to heat the 5.5 L of water from 27∘C to 49∘C? (Assume that the water has a density of 1.0

asked by Lisa on September 12, 2014
76. chemistry

Exactly 1.0 L of hydrogen gas (H2) is collected over water at 292 K under a total pressure of 152 torr. If the vapour pressure of water is 16.5 torr at this temperature, what is the mole fraction of hydrogen in the gas sample? Volume of CO2 = L Mole

asked by nath on December 8, 2011
77. Chemistry 32

HCI (aq) is a strong acid. suppose you dissolved 0.0365 grams of HCI in water to give a final volume of 10.0 mL. what is the pH of this final solution. The molar mass of HCU is 36.5g /mole and the molar mass of water is 18.0g/mole

asked by jen on March 13, 2014
78. Math

The portion of a swimming pool that is below the full water line measures 12 feet by 30 feet by 6 feet deep. What is the volume of water in the swimming pool when it is full, expressed in cubic yards? (1 cu yd =27 cu ft) a.60 cu yd b. 72 cu yd c.74.6 cu yd

asked by Holly on August 21, 2012
79. AP Chem

When dealing with gasses, do you subtract the pressure of water vapor every time it is in the equation? I'm confused on when you subtract it. Such as this problem... NH4NO2(s) -> 2H2O(g) + N2(g) How many grams of ammonium nitrate must have reacted if 3.75

asked by Anna on November 19, 2008
80. physics

asked by Kristie on March 29, 2012
81. chemisry

Why does luis place 3 cups of water without any solute in the freezer? a. if some water spills, he will have extra b. the plain water is the control group c. he wants to know how long water takes to freeze d. the 3 cups of water are unnecessary to the

asked by mary1111 on February 26, 2010
82. AP Physics B (chemistry bit)

I think I'm doing this wrong In an internal combustion engine, air at atmospheric pressure and a temperature of about 20 degrees celcius is compressed in the cylinder by a piston to 1/9 of its original volume (compression ratio = 9.0). Estimate the

asked by AP Physics B (chemistry bit) on November 15, 2009
83. Chemistry

Before a trip from New York to Boston, the pressure in the automobile tire is 2.1 atm at 280 K. At the end of the trip, the pressure gauge reads 1.88 atm. What is the new Celsius temperature of the air inside the tire?(Assume tires with constant volume).

asked by Linda on March 9, 2014
84. Chemistry

In the reaction between aluminum and hydrochloric acid, how many moles of hydrogen gas would be liberated when 3.612E-2 grams of aluminum are treated with excess hydrochloric acid? Moles of hydrogen gas liberated = mol The atmospheric pressure was measured

asked by Carrie on November 4, 2011
85. Chemistry

In the reaction between aluminum and hydrochloric acid, how many moles of hydrogen gas would be liberated when 3.612E-2 grams of aluminum are treated with excess hydrochloric acid? Moles of hydrogen gas liberated = mol The atmospheric pressure was measured

asked by Carrie on November 5, 2011
86. Chemistry

What would the molarity of 50 mL of 3% hydrogen peroxide be if it's volume/volume? I know how to do weight/volume but not this, someone help?

asked by Anonymous on October 3, 2010
87. chemistry

Hi, Can anyone suggest a protocol for preparing 1 Litre ammonical solution (pH 7.8, NH4-N, 3000 mg/L) from NH4Cl and NaOH? I have worked out that I need 10.7g NH4CL and 0.45 g NaOH -is this correct? I am assuming that 1st step is to prepare 0.45 g NaoH in

asked by niko on March 17, 2016
88. Biology

How can I describe the following things about water in sketches or drawings? please give me ideas 1.High heat capacity 2.High heat of vaporization 3.Water is a solvent 4.Water molecules are cohesive and adhesive 5. Frozen water is less dense than liquid

asked by Kylie on February 10, 2016
89. physicscalculus

An automobile with a mass of 1310 kg has 3.10 m between the front and rear axles. Its center of gravity is located 1.78 m behind the front axle. The automobile is on level ground. (a) Determine the magnitude of the force from the ground on each front wheel

asked by Jane on December 13, 2008

Can you check these? Find the prepositional phrase in each sentence. Circle the preposition, and underline the object of the preposition. 26. After it was fixed, he thought about how to make it work better. prep: about obj: ? 27. The engine needed a lot of

asked by Jared on November 8, 2017
91. calculus

An automobile computer gives a digital readout of fuel consumption in gallons per hous. During a trip, a passenger recorded the fuel consumption every 5 minutes for a full hour of travel. time: 0 / gal/h: 2.5 time: 5 / gal/h: 2.4 time: 10 / gal/h: 2.3

asked by Anonymous on October 26, 2007
92. chem

drbob you helped me with this problem the other day but i have a question. -i changed 500mL of ethanol to grams then to mol. i was wondering if i then used 1000mL or 500mL of water to change to kg? The "proof" of an alcoholic beverage is twice the volume

asked by alicia on February 13, 2008
93. Math

The Coffee Counter charges ​\$11.00 per pound for Kenyan French Roast coffee and ​\$15.00 per pound for Sumatran coffee. How much of each type should be used to make aa 24 pound blend that sells for ​\$13.00 per​ pound?

asked by Erin on January 22, 2018
94. Chemistry

A 19.9mL volume of a hydrochloric acid solution reacts completely with a solid sample of magnesium carbonate, producing 183mL of CO2 that is collected over water at 24.0 degrees C and 738 torr total pressure. The vapor pressure for water at 24.0 degrees C

asked by Michelle on April 18, 2013
95. Automotive engine parts and operation

plz help me w/ the answers i have n tell me if i'm wrong. 1. An automotive engine's camshaft rotates at A. the same speed as the crankshaft B. one-quarter the speed of the crankshaft C. one-half the speed of the crankshaft D. twice the speed of the

asked by Nessa on December 4, 2009
96. Physics

What is the volume of water at 95 degrees Celcius if at 5 degrees Celcius the water is 5.56L?

asked by Scott on March 12, 2015
97. Chemistry- Drbob-help#3

I still need help with #3 I'm not sure how I got 1.14M. I have tried to do the problem over, but I not coming up with my original answer of 1.14M. Somehow I am missing a step. Please show work for the 1.14M Thanks Question#9 reads exactly as written. A

asked by Paul on February 10, 2011
98. Calculus

The tank shown is full of water. Given that water weighs 62.5 lb/ft3, find the work required to pump the water out of the tank. The tank shown is a hemisphere with r = 5 ft. The water is to be pumped out at the top. First I solved for ri, ri / (5 - xi) = 5

asked by COFFEE on June 23, 2007
99. College Chemistry

When determining the vapor pressure of water, the bubble volume is 1.2mL at 5 degrees celsius. -How many moles of dry air were in the bubble? (assume 1 atm) -If the bubble volume is 8.6mL at 75 degrees celsius, what is the partial pressure of the dry air

asked by Abbey on April 18, 2013
100. College Chemistry

When determining the vapor pressure of water, the bubble volume is 1.2mL at 5 degrees celsius. -How many moles of dry air were in the bubble? (assume 1 atm) -If the bubble volume is 8.6mL at 75 degrees celsius, what is the partial pressure of the dry air

asked by Abbey on April 18, 2013