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May 29, 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: 24,109

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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
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

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

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

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

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

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

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

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

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

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

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 help please!
For my year 7 homework i have had to write a poster about pyhsical and chemical changes when a candle is alight. We have had to use certain vocabulary and one is evaporation. I know what this term means but dont know what evaporates when a candle is alight? Can someone please ...
October 22, 2008 by molly

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 check if my answers are right. drbobzz
Acetylene 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. Equation 2C2H2 + 5O2 ---> 4CO2 + 2H2O A) the mass of oxygen used B) the mass of carbon ...
December 7, 2014 by Rose

algebra
If Jenny's car uses less gas per mile driven than Sandra's truck, how does the graph representing the rate of change of Sandra's truck compare to the graph representing the rate of change of Jenny's car?
June 16, 2013 by q

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

Chemistry
I need to determine the "percentage composition unknown" whatever that is. My current data: a) mass of test tube and foil cover: 7.5323 g b)temp of water bath: 375.65 K c) mass of test tube and foil and gas as sample: 7.5423 g d) barometric pressure: 1.0190 kpa e) mass of test...
November 4, 2010 by Selina

Chemistry
1. Use standard entropies and heats of formation to calculate delta-G of formation at 25 C for a) cadmium(II) chloride (s) b) methyl alcohol, CH3OH (l) c) copper(I) sulfide (s) My problem is that I don't know how to calculate delta-G of formation. I know that the Gibbs-...
March 4, 2007 by Chris

Chemistry
You carry out an exothermic reaction inside a Styrofoam cup calorimeter, using a temperature probe to monitor the temperature throughout the reaction. You find that the temperature increases 7.40 C during the reaction. The specific heat of the reaction solution is known to be...
January 30, 2013 by Joe

Easy Math
The number of positive integers that are less than 500 and that are not divisable by 2 or 3 is? There are 250 divisible by 2, 166 divisible by 3 and 83 divisible by both. So 250 + 166 - 83 = the numbers divisible by 2 or 3, without double counting. Subtract that number from ...
October 7, 2006 by Gina

Physics
A 5.60-kg particle has the xy coordinates (-1.20 m, 0.500 m), and a 5.20-kg particle has the xy coordinates (0.600 m, -0.750 m). Both lie on a horizontal plane. At what x and y coordinates must you place a 1.60-kg particle such that the center of mass of the three-particle ...
February 21, 2007 by winterWX

Accounting
Glanville Distribution markets CDs of the performing artist Harrilyn Clooney. At the beginning of March, Glanville had in beginning inventory 1,500 Clooney CDs with a unit cost of $7. During March Glanville made the following purchases of Clooney CDs. March 5 3,000 @ $8 March ...
May 10, 2011 by Joan A

Accounting
Glanville Distribution markets CDs of the performing artist Harrilyn Clooney. At the beginning of March, Glanville had in beginning inventory 1,500 Clooney CDs with a unit cost of $7. During March Glanville made the following purchases of Clooney CDs. March 5 3,000 @ $8 March ...
May 10, 2011 by Joan A

Chemistry II
What volume of .100 M NaOH will react completely with 21.00 mL of .500 M HCl? Vb*ConcBase= Vacid*ConcAcid Solve for Vb. 21.00 mL x .500 M HCl = 1.05e1 1.05e1 / .100 M NaOH = 1.05e2 right.
April 25, 2007 by Jayd

Math
5) Which is equivalent to the expression shown? 5^-3 a. -125 b. -15 **** c. 1/125 d. 2 6) Which is equivalent to the expression shown? 10^2 . 5^2 a. 2,500 ******* b. 250 c. 500 d. 200 7) The value of Square root 60 is between which pair of consecutive numbers? a. 59 and 60 b. ...
February 10, 2014 by Dakota

earht science
1. How did planetesmals form planets? (1 point) A. They broke apart into smaller chunks. B. They collided and stuck together.** C. They cooled and pulled ice together. D. They began to rotate. 2. Which parts of the suns atmosphere become visible during a total solar eclipse...
October 15, 2014 by could someone cheack these please?

Chemistry
Sulfur dioxide reacts with chlorine to produce thionyl chloride and dichlorine oxide S: 32.0 amu O: 16.0 amu Cl: 35.45 amu SO2 + 2Cl2 --> SOCl2 + Cl2O If 0.400 moles of chlorine gas reacts excess sulfur dioxide, how many moles of dichlorine oxide are forme?
May 1, 2015 by Sara

physics
Temperature is distinguished from heat when we note that whereas temperature is ____________________. A) None of these.B) measured in degrees, heat is measured in units of energy.C) a measure of average translational kinetic energy per molecule, heat is energy that moves from...
March 24, 2012 by Kristie

physics
1. Temperature is distinguished from heat when we note that whereas temperature is ____________________. A) None of these.B) measured in degrees, heat is measured in units of energy.C) a measure of average translational kinetic energy per molecule, heat is energy that moves ...
March 25, 2012 by Kristie

Chemistry
At 627ºC, sulfur dioxide and oxygen gases combine to form sulfur trioxide gas. At equilibrium, the concentrations for sulfur dioxide, oxygen, and sulfur trioxide gases are .0060M, .0054M, and .0032M, respectively. a. Write a balanced equation for the formation of one mole of ...
February 27, 2013 by dauntedorange

Math
Can someone please help me with this question. Thank you! The information in the table represents the temperature of a cup of hot chocolate in relations to time. Time(t) Temperature(T) 0 60 5 54 10 48 15 44 20 41 Use the exponential regression function in your calculator to ...
May 10, 2009 by Katie

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 25kg of room-...
November 4, 2010 by Bella

Economics
I thinks i got the problem right this time P=MR=$750 TC =2,500,000+500q+0.005Q^2 (squared) Mc =500+0.01Q Calculate profit maximizing level Calculate the company's optimal profit and optimal profit as a percentage of sales revenue Can anyone help here I am lost
April 6, 2007 by Jeff

math
Dr needs 500 needles priced at 2.60 per hundred. If he pays within 10 days, she receives a 2% discount, sales tax 5.5%. What amount would you pay with the discount? My math 2.60 x 500 needles = $13.00 $13.00 x 5.5% = 72cents 13.00 + .72 = $13.72 $13.72 - 2% = 27cents 13.72 - ....
May 13, 2010 by LASTDAYS

sience plz hep
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 7, 2015 by bmx

tax income
Tom and Betsy, who are married filing jointly, reported a standard deduction of $11,400 on their 2010 tax return. They paid $500 to the state for income taxes in 2010. In 2011, they received a $125 refund of state taxes paid in 2010. What is the amount that Tom and Betsy need ...
March 2, 2012 by Billy

science-reasoning
in 5 seconds, a car moving in a straight line increases it's speed from 50km/h to 65km/h, while a truck goes from rest to 15km/h in a straight line. which undergoes greater acceleration? what is the acceleration of each vehicle?
October 20, 2007 by Drew

principles of physics
Temperature is distinguished from heat when we note that whereas temperature is ____________________. A) None of these.B) measured in degrees, heat is measured in units of energy.C) a measure of average translational kinetic energy per molecule, heat is energy that moves from ...
March 24, 2012 by Kristie

Biology
Which of the following statements correctly compares the functions of a plant's roots and stem? The stem contains a high percentage of cells that provide structural support, unlike the roots. The stem is the first part of the plant to emerge from a seed, followed by the roots...
September 28, 2012 by Madi

chemistry
why might heating hydrates in a crucible to find the percentage of water in the hyrate not be appropriate for all hydates? is it because some are flammable and water vapour might escape?
December 18, 2008 by s

Science
Constract a heating/cooling curve from an MSDS, draw multistep energy bar charts that correspond to the curve, and calculate the total. Energy released/ absorbed
October 28, 2010 by Jacob

Chemistry
In experiment of silver, lead and mercury(I) chlorides mix with NH3, how does the heating of the lead precipitate present after the addition of NH3help identify the formula ?of the precipitate
May 22, 2012 by Chamy

physics
an heating coil of R=100ohm is connected to 220v supply. calculate time taken if the coil heats 1kg of water from 25degree Celsius to 50degree Celsius
August 3, 2014 by sridhar

Chemistry
When a 77 g piece of metal with a temperature of 88 Degree Celsius is placed into 277 g of water having a temperature of 20 degree Celsius, the final temperature of the metal and water is 23.3 degree Celsius. What must be the specific heat of the metal?
February 14, 2012 by Mom

Chemistry
When a 77 g piece of metal with a temperature of 88 Degree Celsius is placed into 277 g of water having a temperature of 20 degree Celsius, the final temperature of the metal and water is 23.3 degree Celsius. What must be the specific heat of the metal?
February 14, 2012 by Mom

Chemistry
When a 77 g piece of metal with a temperature of 88 Degree Celsius is placed into 277 g of water having a temperature of 20 degree Celsius, the final temperature of the metal and water is 23.3 degree Celsius. What must be the specific heat of the metal?
February 14, 2012 by Mom

Chemistry II
Calculate the energy pulled from 500 grams of Water at 20.0 degrees Celsius to Ice at 0.0 degrees Celsius. What happens to the energy? How much Freon-11 must circulate through the freezer in order to freeze the 500 gram sample of Water?
January 20, 2011 by Mary

Chem 2
Imagine that a deposit of helium gas has been discovered in Antarctica. It is being shipped to Australia in a rigid (constant volume) tank with a rated max pressure of 100 atm. If the tanks are filled to a pressure of 75 atm in Antarctica on a day when the temp is -100F, will ...
February 23, 2010 by Staci

chemistry
CH3OH(g) ----> CO(g) + 2H2 (g) (delta H =+90.7k) A) is heat absorbed or released in the course of this reaction? b) calculate the amount of heat transferred when 45.0g of CH3OH(g)is decomposed by this reaction at constant pressure. c) for a given sample of CH3OH, the ...
October 17, 2011 by Anna

Chemistry
Can somebody help me calculate the energy released when 1g of uranium 235 undergoes fission reaction.Explain each step when the mass of particles are given as: 235U92 = 235.04u , 142Ba56 = 141.92u and 92Kr36 =91.92u. Im stuck on these calculations.Pls rescue me.
August 6, 2012 by Elie

chemistry
a 100 cm cube gas cylinder filled with chlorine under 160 torr pressure is connected by stop clock with another cylinder of 400 cm cube filled with nitrogen under pressure of200 torr. what will be total pressure when stop clock is opened?
October 28, 2011 by afshan

chemistry
a 100 cm cube gas cylinder filled with chlorine under 160 torr pressure is connected by stop clock with another cylinder of 400 cm cube filled with nitrogen under pressure of200 torr. what will be total pressure when stop clock is opened?
October 28, 2011 by afshan

ap chemistry
Some reactions that are predicted by their sign deltaG to be spontaneous at room temperature do not proceed at a measurable rate at room temperature. A suitable catalyst increases the rate of such a reaction. What effect does the catalyst have on deltaG for the reaction? AND ...
February 27, 2008 by kali

physics
A copper telephone wire has essentially no sag between poles 30 m apart on a winter day when the temperature is −16◦C. How much longer is the wire on a summer day when the temperature is 26 ◦C? Assume that the thermal coefficient of copper is constant ...
January 22, 2015 by joe

science
Molecules would move the fastest when A.the temperature is increased B.the molecule is bigger C.the energy is decreased d.the temperature is decreased
October 20, 2007 by Cierra

Chemistry
How would i figure out the vapor pressure at room temperature? (atmospheric pressure is 760 mm hg and the temperature is 20C.)
February 11, 2008 by Anonymous

chemistry help
A 265 g aluminum engine part at an initial temperature of 2.00C absorbs 84.5 kJ of heat. What is the final temperature of the part (c of Al = 0.900 J/gK)?
October 5, 2008 by james

physics
The temperature fell 4 degrees every hour. The total decline was 20 degrees. For how many hours was the temperature decreasing at this rate?
January 22, 2011 by Anonymous

ALGEBRA
A transformer has cooling fans that are set to come on when the temperature reaches 32 Celsius. The temperature is 90 Fahrenheit. Are the fans running?
July 2, 2012 by TIFFANY

Algebra
On February 18, from 9 a.m. until 2 p.m., the temperature rose from -14(degrees)F to 38(degrees)F. What was the total increase in temperature during this time period?
November 11, 2012 by Vanessa

Algebra
On February 18, from 9 a.m. until 2 p.m., the temperature rose from -14(degrees)F to 38(degrees)F. What was the total increase in temperature during this time period?
November 11, 2012 by Vanessa

math
for each pair of substances, circle the substance with more thermal energy and explain why? A0 500g of water at 35 degree C VS. 500 g of water at 85 degree C B) 500 g of water at 35 degree C VS. 250 g of water at 35 degree C
December 19, 2011 by faith

statistics
Assume that the population proportion is .55. Compute the standard error of the proportion, ( ), for sample sizes of 100, 200, 500, and 1000 (to 4 decimals). a. 100? b. 200? c. 500? d. 1000?
April 14, 2014 by Vanessa

Calculus
Assume that a demand equation is given by q=9000-100p. Find the marginal revenue for the given production levels. a. 500 Units the marginal revenue at 500 units is
November 1, 2014 by Duane

10th grade
A computer manufacturer assembled 21,000 computers in October. For the month of November, they expect to double production. If a worker can assemble one computer per day, how many workers will be needed to complete the job in 28 days? a. 1,500 workers b. 750 workers c. 1,429 ...
September 9, 2010 by Ross

Math
Suppose you own a tour bus and you book groups of 20 to 70 people for a day tour. the cost per person is $30 minus $0.25 for every ticket sold. Gas and other miscellaneous costs are $200. Part a) Write the revenue and cost functions for this situation Part b)Write the profit ...
July 29, 2014 by Tim

Science
PLEASE HELP ME!!!!! Which requires more energy? Heating up a 350 mL cup of coffee from 25C to 65C? or Warming the surface of a Lake (2,000,000,000 mL) from 28C to 29C. and Prove your answer.
March 7, 2012 by Julia

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