Thursday
July 2, 2015

Search: 0.65 of argon gas is admitted to an evacuated 60 container at 60 . The gas then undergoes an isochoric heating to a temperature of 500 .

Number of results: 24,240

science
1mole of liquid water at 25 c and 1 atm forms 1 mole of steam at 100 c and 1 atm. the molar heat capacity of water 373 k is 40.79kj/mol and the molar heat capacity of water is 75.3 J. assume ideal gas behavior for steam. Calculate delta U, delta H and delta S
March 29, 2013 by bob

chemistry
what would the equation be for: heating of iron III hydroxide crystals --> iron III oxide + water vapor
October 4, 2011 by Kitsune

Chemistry
Upon heating 134 g MgSO4 7 H2O: (a) how many grams of water can be obtained? (b) how many grams of anhydrous compound can be obtained?
May 26, 2015 by Mark

Physics
Two point charges q1 and q2 are held 4.00 cm apart vertically. An electron released at the middle point that is equidistant from both charges undergoes an initial acceleration of 8.95 X 10^18 m/s2 directly upward,parallel to the line connecting q1 and q2 .Find the magnitude ...
September 7, 2009 by sandhu

Physics
Two point charges q1 and q2 are held 4.00 cm apart vertically. An electron released 3 cm from the middle point that is equidistant from both charges undergoes an initial acceleration of 8.95 X 10^18 m/s2 directly upward,parallel to the line connecting q1 and q2 .Find the ...
September 7, 2009 by sandhu

chemistry
Acids that form ionic solutions will conduct electricity. Acids that form covalent solutions will not conduct electricity. but acids have HYDROGEN in them and hydrogen is a gas is that why the results of the conduction test need to be changed because hydrogen is a non metal ...
November 1, 2008 by lila

Chemistry
If 35.0 mL of 0.210 M HCl reacts with excess Mg, how many mL of hydrogen gas are produced at STP? Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) Is the answer 0.8176 L Convert moles of HCl: 2.10 x 0.035= 0.00735 mol of HCl Convert to moles of H2: 0.0735 x 1 mol H2/ 2 mols HCl= 0....
November 24, 2014 by Mike

Chemistry (PLS HELP ASAP)
What is the molecular weight of a gas if a 15.0g sample has a pressure of 836 mm Hg at 25.0 degrees C in a 2.00 L flask? a)167 b)1.35 c)176 d)11.1 e)none of the above Please explain... I need to understand how to do this. Thanks. I know that I have to use PV=nRT, then solve ...
January 11, 2010 by coug

Chemistry
Consider the gas-phase transfer of an electron from a sodium atom to a chlorine atom: Na(g)+Cl(g)-->Na^(+)(g)+Cl^(-)(g) I was able to write the reaction that relates to an ionization energy and that relates to an electron affinity. I broke it up into: Na(g)--> Na^(+)+e...
November 3, 2012 by Ezra

ap chemistry
what does H2 + CH2 form? (what product?) What is CH2? There is a (CH)2 but I don't know of a CH2. Yes, I meant to ask: What product is formed by this reaction: H2 + (CH)2 My original answer is gone but I will repost. (CH)2 is HCtriplebondCH which is acetylene. H2 gas adds ...
October 29, 2006 by sara

Stoichiometry
I am taking an online chemistry class and I do not at all understand how on earth how to do stoichiometry. I just dont get it, its not that I dont know how to do the math, but figuring out how to ger the information. PLEASE HELP!! When 11.7 grams of iron and 212.7 grams of ...
July 10, 2008 by Kesiah

Chemistry
on heating the hydrate CaSO4*2H2O, how many moles of water should be driven off per mole of hydrate? 1 mole?
November 8, 2009 by c

Medical Billing and Coding
Patient is admitted for radiation therapy for metastatic bone cancer, primary unknown. Patient develops severe vomiting secondary to the course of radiation and is kept an extra day for stabilization. V Code: ____________________ Diagnoses Codes: ___________________, ...
December 14, 2011 by Terry Davis

chemistry
For OCTANE, what is the ratio of Carbon atoms to Hydrogen atoms in a molecule? It's specified that Octane undergoes complete combustion to form 8L of Carbon Dioxide & 9L of Water at constant temp and pressure. thanks :)
September 24, 2010 by kelly

CHEM HELP!
NH4HS<-->NH3+H2S What is the minimum mass of NH4HS that must be added to the 5.00-L flask when charged with the 0.300g of pure H2S, at 25C to achieve equilibrium?? Kp=.120 at 25C initial pressure of H2S in flask = .0431atm partial pressures of H2S and NH3 .326, .369 mole...
March 12, 2012 by student

PHYSICS PLEASE HELP
A large balloon of mass 237 kg is filled with helium gas until its volume is 318 m3. Assume the density of air is 1.29 kg/m3 and the density of helium is 0.179 kg/m3. (b) Calculate the buoyant force acting on the balloon. ____________N (c) Find the net force on the balloon and...
November 8, 2012 by AMY

Chemistry
If you have two containers with water, one with water at 25 degrees C and the second with water 75 degrees C, explain in which one would you be able to dissolve less CO2 (a gas)? Explain in which one you would be able to dissolve more NaCl (check the solubility curve)?
April 29, 2008 by Cori

chemistry
Ammonium chloride and sodium nitrite react to form sodium chloride, water and nitrogen gas. If 6.33 moles of ammonium chloride react with sodium nitrite, how many grams of sodium chloride will be produced?
January 29, 2014 by Julie

heat
if the absolute pressure of a gas is 550.280 kpa, it's gage pressure is what? http://www.ajdesigner.com/phppressure/fluid_pressure_equation_absolute_gauge.php
August 13, 2005 by missy white

Physics
A conduction heat wave is caused to pass through a metal bar of average temperature Tmean = 36 degrees altering its temperature sinusoidally with an amplitude of Ti=2 degrees. The equation which gives the temperature T(x.t) of the metal bar at any place x(in metres) inside it ...
April 15, 2011 by Michaela

calculus
A cold metal bar at -30 degrees Celsius is submerged in a pool maintained at a temperature of 40 degrees Celsius. Half a minute later, the temperature of the bar is 20 degrees Celsius. How long will it take the bar to attain a temperature of 30 degrees Celsius? I know that dy/...
March 14, 2010 by Debbie

Chemistry
Magnesium metal reacts with hydrochloric acid to form magnesium chloride and hydrogen gas. Suppose we react an excess of magnesium metal with 13.2 mL of a 3.00 M solution of hydrochloric acid and collect all of the hydrogen in a balloon at 25oC and 1.00 atm. What is the ...
May 5, 2011 by Priya

chemistry
If 8.29 L of gaseous Cl2 measured at STP and 0.380 mol of liquid CS2 are reacted stoichiometrically according to the balanced equation, how many moles of liquid CS2 remain? CS2(l) + 3Cl2(g) CCl4(l) + S2Cl2(l) Molar Mass (g/mol) Cl2 70.906 CS2 76.143 CS2 1.26 Molar Volume (L...
June 2, 2010 by Judy

physics
a car traveling at 30.0m/s undergoes a constant negative accerleration of magnitude of 2.00m/s^2 when the brakes are applied. how many revolutions does each tire make before the car comes to a complete stop,assuming thaat the car does not skid and that the tires have radii of ...
February 23, 2009 by nay

Marketing Management
What are some key issues /opportunities for Subway Resturant Please check reliable sources about this company's business plans and finances. It's in a highly competitive field of fast food. What can it do to stand out and attract more customers? In out area, Subway has ...
January 12, 2007 by zeta

P.E. help
1. The 3 Rs stand for: reduce,reuse, and A. Replicate B. Recycle*** C. Redo D. Regulate 2. Conservation is the protection and preservation, of A. The natural enviornment***: B. Industries C. Farm land D. Residental areas 3. Which of the following is a non-renewable resource? A...
December 14, 2014 by callie

Math
At the end of the first quarter of 2006, all the major stock market indexes had posted strong gains in the past 12 months. Mass Mutual Financial Group credited the increases to solid growth in corporate profits. The mean one-year return for stocks in the S&P 500, a group of ...
August 31, 2011 by Branden

science
Why is a heating element with a thermostat placed on the bottom of an aquarium? To heat the water. Heat rises so you would put it at the bottom of the tank.
November 2, 2006 by kelli

Math
An object is heated to 90 degrees Celcius and is then allowed to cool in a room whose air temperature is 25 degrees celcius. If the temperature of the object is 75 degrees celcius after 10 minutes, when will its temperature be 50 degrees celcius?
November 22, 2010 by Hannah

medical billing
what codes are assigned for a patient admitted for an azathiopring i drug induced aplastic anemia? the patient has peripheral neuropathy of multiple joints of the lower extremities secondary to severe rheumatoid arthritis. icd 9 cm diagnosis codes with poa indicator and ms-drg...
July 25, 2013 by Anonymous

Hard Calculus
A dose, D, of a drug causes a temperature change, T, in apatient. For C a positive constant, t is given by T=((C/2)-(D/3))D^3. (a) What is the rate of change of temperature change with respect to dose. (b) For what dose does the temperature change increase as the dose ...
November 9, 2008 by George

Biology
I'm so horrible at biology so help is appreicated; "The following experiment is to test the limits of cell population growth. Cells were grown in six flasks under different conditions. Eash flask contained a nutrient broth of the same concentration. The table below shows the ...
January 15, 2008 by Lindsay

phys
A 10.9-g iron bullet with a speed of 4.00 102 m/s and a temperature of 20.0 C is stopped in a 0.400-kg block of wood, also at 20.0 C. (a) At first all of the bullet's kinetic energy goes into the internal energy of the bullet. Calculate the temperature increase of the bullet...
April 26, 2012 by opp

chemistry
assuming that the calorimeter contains 5.00 * 100 g of water and that the initial temperature is 30.0 degree celcius. what will the final temperature be? (use the proper formula and units, and show your work below)
October 9, 2007 by alice

Calculus
Recorded data indicates that on a recent date t hours past midnight, the temperature at Logan airport was f(t) = 14sin(1/3t-2) + 60 degrees Fahrenheit. What was the average temperature between 9 am and noon?
February 1, 2011 by Aviana

chemistry
A thermometer scale is calibrated (marked off) in a degree Celsius from 1 oC to 50 oC. Determine how many significant figures should be used to express the outdoor temperature if the temperature is more than 1 oC and less than 10 oC: (A) 1 (B) 2 (C) 3 (D) 4
July 15, 2013 by Janaiby

Algebra
Temperature AF 40 1000 60 1840 70 2260 85 2890 Find a linear model for the number of acre-feet of water that evaporate as function of temperature. E(T)= Is the answer E(T)=42T-960?
October 27, 2014 by Patricia

Chem
Find the constants (a and b) for O2 in Table 5.7. Use the Van der Waals equation to determine the pressure of 1.000 mole of O2 if the gas occupies 22.50 liters at 27.00 oC. First, find the values for each of the two terms in the equation, then find the difference. Show all ...
October 11, 2014 by Feather

physics
A 2000 watt heating element is connected in parallel to a 100 watt bulb across 200 volt source. Determine the total power and heat generated in the combination for 1.5 hours. help!
February 10, 2013 by nitz

Chemistry
In a heating and cooling curve, I understand that the flat part means that the bonds are either forming or breaking, depending on if the input of energy is increasing or decreasing, but what is happening to the bonds in the slanted parts? Thanks!
March 19, 2014 by Serena

chemistry
The thermal decomposition of dinitrogen pentoxide in the gas phase to give nitrogen dioxide and oxygen is a first order reaction. If the half life at 55 C is 410 s, what is the value of the rate constant k? If the initial concentration of dinitrogen pentoxide in an expt at 55 ...
March 11, 2009 by jen

math calculus
In an experiment a persons body temperature is given by T=310-(7/9)^n where n is the number of minutes after in an experiment a persons body temperature is given by T=310-(7/9)^n where n is the number of minutes after the start of the experiment and T is the temperature in ...
November 26, 2012 by rima

ap chemistry
Jeff and Jill go canoeing. While reaching to feed a duck, the boat flips. Jeff and Jill blow up their inflatable life preservers and then put them on. As they wait for the rescue squad, they calculate how much nitrogen is in each life preserver. They estimate that the volume ...
February 9, 2013 by cheri

math
On Saturday, Alberto filled his right rear tire with air at the gas station around the block from where he lives. Three days later the tire pressure in that tire measured 26 psi (pounds per square inch). On the following Saturday, one week after he had originally filled the ...
August 7, 2014 by Jeffery

Organic Chemistry
isopentyl alcohol is reacted with acetic acid to make isopentyl acetate through Fischer esterification. Sulfuric acid is used to assist the reaction. After the reaction, the solution is washed with sodium bicarbonate. What reactions take place during this washing? What gas is ...
July 22, 2008 by chemstudent

Chemistry
Assume that gas mileage is proportional to the total energy released upon combustion of fuel. Use your results in question 2 (Ethanol=88,800 kJ/gal n-Octance=105,000 kJ/gal) to determine the ratio of ethanol /n-Octane required, in gallons to drive equal distances. How much ...
December 7, 2012 by Jenifer

Calculus
A dose, D, of a drug causes a temperature change, T, in apatient. For C a positive constant, t is given by T=((C/2)-(D/3))D^3. (a) What is the rate of change of temperature change with respect to dose. (b) For what dose does the temperature change increase as the dose ...
November 9, 2008 by George

AP Stats
Surveys indicate that 5% of the students who took the SATs had enrolled in an SAT prep course. 30% of the SAT prep students were admitted to their first choice college, as were 20% of the other students. You overhear a high school student say he got into the college he wanted...
January 2, 2009 by Stephanie

Physic
The spout heights in the container in the figure are 15 cm, 30 cm, 45 cm, and 60 cm. The water level is maintained at a 68 cm height by an outside supply. What is the speed of the water out of the 15 cm high hole? What is the speed of the water out of the 30 cm high hole? What...
May 7, 2011 by Bret

Physics
A proton is released from rest in a uniform electric field which is directed along the x axis and of magnitude E=2*10exponent5 V/m.The proton undergoes a displacement from point A at the origin to point B at x=0.2m.What is the change in the potential energy of the proton ...
January 17, 2011 by Joel

Physics
A 120 kg crate on the flatbed of a truck that is moving with an acceleration of 1.5 m/s^2 along the positive x axis. The crate does not slip with respect to the truck undergoes a displacement whose magnitude is 43 m. What is the total work done on the crate by all of the ...
March 18, 2015 by Amiel

writting a program
Speed of Sound. Sound travels through air as a result of collisions between the molecules in the air. The temperature of the air affects the speed of the molecules, which in turn affects the speed of sound. The velocity of sound in dry air can be approximated by the formula...
February 23, 2012 by sarah

general chemistry
. The thermal decomposition of dinitrogen pentoxide in the gas phase to give nitrogen dioxide and oxygen is a first order reaction. If the half life at 55 C is 410 s, what is the value of the rate constant k? If the initial concentration of dinitrogen pentoxide in an expt at ...
October 22, 2009 by susie

general chemistry
. The thermal decomposition of dinitrogen pentoxide in the gas phase to give nitrogen dioxide and oxygen is a first order reaction. If the half life at 55 C is 410 s, what is the value of the rate constant k? If the initial concentration of dinitrogen pentoxide in an expt at ...
October 22, 2009 by susie

Chemistry
calculate the enthalpy change in delta H foor heating 250 grams of liquid water from 0 degrees celcius to 100 degrees celcius.
February 11, 2011 by Bri

chemistry
Acettlene gas (C2H2) is used in welding. During one job, a welder burns 48.0 g of acetylene. Using a balanced equation for the complete combustion of acetylene, calculate the following: Balanced Equation a) the mass of oxygen used b) the mass if carbon dioxide produced c) the ...
December 6, 2014 by Rose

English
Could you please check these sentences (the various alternatives). Thank you very much. 1) "I didnt give him my password, she said. 11) Shall I wrap the chocolate for you?, the shop assistant asked me. 2) She denied giving him her password. She admitted not giving him ... ...
October 5, 2011 by Henry2

statistics
Statistics. The lowest temperature ever recorded in the state of Oregon was -54 F ( in Seneca, on February 10, 1933). The states record high temperature occurred in Pendleton on August 10, 1898, when it reached 119 F. What is the historical temperature range in the state of ...
March 21, 2007 by carol

chem-speed at STP
Hi- we were given this question and I have no clue how to figure it out...please help! Which gas molecules have the greatest average speed at STP? [a] SO2( sulfur dioxide) [b] NH3( ammonia) [c] O2( oxygen) [d] N20 (Dinitrogen oxide) Ok, at stp, that means they all have the ...
May 1, 2007 by ty

Science
1. Which layer of the sun's atmosphere are you looking at when you look at an image of a sun? A) Photosphere B) Chromosphere C) Corona D) Prominence 2. What materials could have been found in a giant cloud that formed the solar system? A- hydrogen and helium B- hydrogen and ...
February 13, 2015 by Katie

Physics
A raindrop (mass 1.00 g) is travelling at a speed of 40m/s when it hits the surface of 100 g of water contained in a drinking glass. What is the change in temperature of the water in the glass if we assume that a) all the kinetic energy of the raindrop is converted to energy ...
April 7, 2011 by Mark

accounting
E4-19 On December 31, the adjusted trial balance of Oslo Employment Agency shows the following selected data. Accounts Receivable $24,000 Commission Revenue $92,000 Interest Expense 7,800 Interest Payable 1,500 Analysis shows that adjusting entries were made to (1) accrue $4,...
January 26, 2012 by bill

A L G E B R A H ELP MS SUE.
I THINK I MAY HAVE DONE MY HOMEWORK WRONG BECAUZE IT SAYS TO : ESTIMATE THE PRODUCT OR QUOTIENT. SO WOULD THAT MEAN TO ACTUALLY DO WORK THEN ESTIMATE THE PRODUCT OR QUOTIENT LIKE FIRST -72 X 57 = -4104 OR ESTIMATE; -4000 ? I AM CONFUSED ABOUT WHAT IM SUPPOSE TO FIND : ...
September 20, 2011 by MARKO

Chemistry
We're doing gas problems in chemsitry. I have no idea where to even begin on this problem: Air is 20% oxygen and 80% nitrogen. What is the mass of air in an automobile tire of 19.7 L and internal pressure of 46.7 PSI at 24 degrees celsius? (That pressure is the same as the 32 ...
March 29, 2010 by Avalon

chemistry
use and activity series to Identify two metals that will not generate hydrogen gas when treated with and acid write balanced molecular equations: aluminum metal with dilute nitric acid Write balanced molecular equations:Calcium hydroxide solution with acetic acid How many ...
April 14, 2008 by Katie

chemistry
use and activity series to Identify two metals that will not generate hydrogen gas when treated with and acid write balanced molecular equations: aluminum metal with dilute nitric acid Write balanced molecular equations:Calcium hydroxide solution with acetic acid How many ...
April 14, 2008 by Katie

physics
In a student experiment, a constant-volume gas thermometer is calibrated in dry ice (−78.5C ) and in boiling pentane (36.1C). The separate pressures are 0.896 atm and 1.433 atm. Hint: Use the linear relationship P = A + BT, where A and B are constants. What value of ...
December 13, 2014 by shawn

math (calc)
At noon, ship A is 150 km west of ship B. Ship A is sailing east at 35 km/h and ship B is sailing north at 25 km/h. How fast is the distance between the ships changing at 4:00 pm. Find the intervals of increase or decrease find the local maxiumum and minimum values find the ...
July 8, 2008 by jeff

Chemistry
How much boiling water would you need in order to raise the bath to body temperature (about 37)? Assume that no heat is transferred to the surrounding environment. Imagine that your water heater has broken, but you want to take a bath. You fill your bathtub with 25 of room-...
November 4, 2010 by Bella

algebra
A piece of pottery is removed from a kiln and allowed to cool in a controlled environment. The temperature (in degrees Fahrenheit) of the pottery after it is removed from the kiln for various times (in minutes) is shown in the following table. Time, min Temperature, F 15 2150...
October 25, 2014 by Jesse

Physics
A 1.00 kg particle has the xy coordinates (-1.20 m, 0.500 m) and a 3.00 kg particle has the xy coordinates (0.600 m, -0.750 m). Both lie on a horizontal plane. At what (a) x and (b) y coordinates must you place a 1.00 kg particle such that the center of mass of the three-...
July 20, 2010 by Matt

ACCOUTING
If beginning inventory consisted of 22,500 units, ending inventory was 7,500 units, and 33,000 units were started during the period, how many units were completed and transferred out of the department to the next department? Show your work
May 20, 2015 by KIKI

floral designing
what kind of container do you need for a Hogarth arrangement?
April 23, 2010 by anne

science
should i heat material in a closed container or vessel
August 27, 2010 by bri

Chemistry 1151
How many oles of Neon are in a 25mL container at STP?
October 6, 2010 by Sydney

business
How many 20kg bags of flour can a 20x8ft container accomodate?
May 18, 2012 by Oluwaseyi

statistics
a. A single student (n=1) b. For a mean of 50 student (n=50) c. For a mean of 500 students (n=500)
March 18, 2013 by Anonymous

Chemistry
Heyy, okay I have this question about chemistry and its driving me nuts. It feels like I am so close but am just missing something. The question is: A vessel of 6.84 L in volume contains 3.61 L of pure water at 25C. A partial pressure of 3.67 atm of CO2 is quickly injected ...
February 3, 2007 by Tracy

Chemistry
a 265 ml flask contains pure helium at a pressure of 756 torr. A second flask with a volume of 460 ml contains pure argon at a pressure of713 torr
February 17, 2011 by FSU

chemistry
A calorimeter consists of an interior metal bomb (container) surrounded by 2.22 kg of water all contained within an insulated exterior wall. A sample of propane, C3H8, weighing 6.89g, was burned in the calorimeter with excess oxygen. As a result of the combustion, the interior...
July 16, 2008 by Anonymous

Math
Problem Solving Work Backward The temperature was 16 degree Celsius when Becky returned home at 6 p.m. The temperature was 4 degree Celsius warmer at 3 p.m. than it was at 6 p.m. It was 3 degree Celsius warmer at 12 noon than it was at 3 p.m. What was the temperature at 12 noon?
May 3, 2013 by Quan

chem
Mercury(II) Oxide decomposes upon heating, producing elemental mercury. This reaction has an enthalpy value of 90.8 kJ/mol. How much heat is required to produce 2000 lbs of mercury?
February 26, 2014 by johnny

science - Please Answer Quickly !
If I Had A Saucepan And A Spoon. And The Water Was Heating.. How Does The Energy Transfer From The Hob To The Spoon. What Is Conduction, Convection & Radiation ? Please Help .. Thank You .x
January 18, 2009 by fern

chemistry
What is the effect of the following on the separation of the mixture? a. A soluble, nonvolatile impurity b. a decrease in barometric pressure c. an increase in barometric pressure d. rapid heating rate
October 7, 2010 by Anonymous

math
Jessica is swimming in the 500 meter race. It takes her 1 minute and 35 seconds to swim one lap in an Olympic sized pool(it's only 50 meters long). How long will it take her to swim the 500 meter race?
January 16, 2014 by Anonymous

chemistry
how much oxygen is produced by heating 20g of mercury (II) oxide if 18.6g of mercury is produced?
March 24, 2008 by al

plz help science
1. Which layer of the sun's atmosphere are you looking at when you look at an image of a sun? A) Photosphere B) Chromosphere C) Corona D) Prominence 2. What materials could have been found in a giant cloud that formed the solar system? A- hydrogen and helium B- hydrogen and ...
April 8, 2015 by bmx

Physics
If the air temperature is the same as the temperature of your skin (about 30 degrees Celcius), your body cannot get rid of heat by transferring it to the air. In that case, it gets rid of the heat by evaporating water (sweat). During bicycling, a typical 71.0 kg persons body ...
November 21, 2008 by Angel

accounting
A tabular analysis of the transactions made during August 2010 by Witten Company during its first month of operations is shown below. Each increase and decrease in stockholders' equity is explained. Assets = Liabilities + Stockholders' Equity Cash + Accounts Receivable + ...
November 9, 2013 by eric

chemistry
Ammonia reacts with oxygen in the presence of a platinum catalyst to give nitric oxide and water, according to the following gas phase equilibrium: 4NH_3(g) + 5O_2(g) <---> 4NO(g) + 6H_2O(g) H = −906 kJ mol^−1 What is an appropriate equilibrium expression ...
January 3, 2009 by trigger

Chemistry
Iodine pentafluoride is an incendiary agent, a substance that ignites combustible materials. This compound is usually made by passing fluorine gas over solid iodine, but it also forms when iodine monofluoride changes into the element iodine and iodine pentafluoride. (a) Write ...
June 9, 2012 by Jamie

Chemistry
It was mentioned that the rates of many reactions approximately double for each 10 C rise in temperature. Assuming a starting temperature of 25 C, the activation energy would be_____________ in kJ mol-1, if the rate of a reaction were to be twice as large at 35 C?
February 19, 2010 by Pavleen II

science
you are riding to school on the bus in a snowstorm. through the window, you see a lighted sign that gives the temperature as 26 degrees, but you can't make out whether the temperature scale is Celsius or Fahrenheit. which is it and how do you know
January 14, 2013 by Taylor

math
when a cold front move through, the temperature dropped at an average of 3 degree per hour.using a signed number find the change in temperature after six hours
February 5, 2015 by patricia

chemistry-please check my work
Determine the mass of carbon monoxide that is produced when 45.6 g of methane CH4 react with 73.2 g of oxygen gas, O2. The products are CO and H2O. Please check my work: CH4 + 3O2 ---> 2CO + 2H20 nCH4=2.84 mol nO2=4.58 mol Limiting Reactant: 1 mol CH4/2.84 mol CH4 = 3 mol ...
May 23, 2008 by Sarah H

Physical Chemistry
Please help, about real gas deviation from ideal behavior. when we plot graph against P and PV, at 17C,: for H2, there's straight ascending line. for N2, line a little curved at low P then become ascending straight like H2. for CO2, line curved, very descending at low P, ...
October 26, 2014 by Learner11

AP Chemistry
A mixture of aluminum and zinc metal is used in 2 experiments described below: A- A 1.7 gram sample of the mixture is reacted with excess hydrochloric acid and the resulting hydrogen gas is collected over water. The reaction takes place at 750 mm Hg atmospheric pressure and ...
April 3, 2011 by Kate

chemistry
experiment: Gravimetric determination of moisture in fertilizer samples 1. What are the advantages of weighing by difference to direct weighing when using an analytical balance? 2. Why are the samples grinded before drying in the oven? Weighing by difference minimizes errors ...
August 10, 2007 by smiley

Physics
The heating element in a George foreman grill is plugged into a 120-V wall socket, and 1 C of charge passes through it every 0.09 s. What is its power output, and what is the electrical energy being converted into?
March 25, 2015 by Emily

Physics
The heating element in a George foreman grill is plugged into a 120-V wall socket, and 1 C of charge passes through it every 0.09 s. What is its power output, and what is the electrical energy being converted into?
March 25, 2015 by Emily

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