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August 29, 2016

Search: a metal sample weighing 45.0 g and at a temperature of 99.1

Number of results: 24,179

chemistry
A sample of gas in a balloon has an initial temperature of 9.0∘C and a volume of 1.75103L . If the temperature changes to 80.∘C , and there is no change of pressure or amount of gas, what is the new volume, V2, of the gas?
November 27, 2014 by joy

chem
A sample of gas in a balloon has an initial temperature of 19 ∘ C and a volume of 1.47103L . If the temperature changes to 63 ∘ C , and there is no change of pressure or amount of gas, what is the new volume, V 2 , of the gas?
March 18, 2015 by dakota

Chemistry
three separate questions 1. An empty graduated cylinder weighs 82.450 g. When filled to 50.0 mL, with an unknown liquid it weighs 110.810 g. What is the density of the unknown liquid? 2. It is valuable to know that 1 milliliter (mL) equals 1 cubic centimeter (cm^3) or cc.). ...
February 11, 2014 by Lisa

Chemistry
A sample of an ideal gas consists of 2 moles, pressure = 1 atm, volume = 0.5 liters Find the temperature pV=nRT T = p*V/(n*R) T = 1 atm * 0.5 liters / (2 moles * .08206 L atm K^-1 * mol^-1) T = 3.04 K Did I do that problem correctly? That temperature seems unrealistically low.
February 6, 2009 by chemstudent

Physics/Chemistry
Two thin strips of metal are bolted together at one end and have the same temperature. One is steel, and the other is aluminum. The steel strip is 0.10% longer than the aluminum strip. By how much should the temperature of the strips be increased, so that the strips have the ...
February 15, 2011 by Heather

Physics
As the drawing shows, two thin strips of metal are bolted together at one end and have the same temperature. One is steel, and the other is aluminum. The steel strip is 0.062% longer than the aluminum strip. By how much should the temperature of the strips be increased, so ...
December 5, 2012 by StressedStudent

Algebra
A box is to be formed from a rectangular piece of sheet metal by cutting squares measuring 5 inches on a side and then folding the sides. The piece of sheet metal is twice as long as it is wide. If the volume of the box is to be 1760 in^3, what are the dimensions of the ...
December 17, 2014 by Terry

phyical science
a metal ball is just able to pass through a metal ring .is this true?
August 8, 2008 by lisa

chemistry
A certain metal hydroxide, M(OH)2 contains 32.8% oxygen by mass. What is the identity of the metal M? I dont understand what its asking for.
September 20, 2008 by anonymous

chemistry
how do you know which roman numeral to put between the cation and anion of a metal and non-metal substance?
October 25, 2009 by mike

chem
how do you know which roman numeral to place between the cation and the anion of a metal/non-metal substance?
October 25, 2009 by mike

chemistry
A block of metal has a width of 3.2cm, a length of 17.1 cm, and height of 5.2 cm. Its mass is 1.1 kg. Calculate the density of the metal
September 11, 2010 by Javier

Math
A set of 12 identical metal ballbearings was made from 10 cm^3 of metal. Calculate the radius of each ball bearing.
October 23, 2012 by CrissyXD

physics
Why metal was used to make each object you should consider to propies of metal when you answear this question
January 16, 2013 by Malefu

Chemistry
What determines whether one metal will replace another metal from a compound in a single-replacement reaction?
May 7, 2014 by Angela

HELP PLZ
What determines whether one metal will replace another metal from a compound in a single-replacement reaction?
May 7, 2014 by Angela

Science
What determines whether one metal will replace another metal from a compound in a single-replacement reaction?
May 7, 2014 by Angela

Physics
Two thin strips of metal are bolted together at one end and have the same temperature. One is steel, and the other is aluminum. The steel strip is 0.10% longer than the aluminum strip. By how much should the temperature of the strips be increased, so that the strips have the ...
February 15, 2011 by Heather

chemistry
why is changing a metal ore into the metal known as reduction?
March 5, 2009 by jess

Science
Are the ions of a metal very different from the atoms of a metal?
April 21, 2013 by M.

chemistry
problem 2. a sample of calcium chloride weighs 1.64g. it is dissolved in water and silver nitrate solution added.a precipitate of silver chloride weighing 4.24g was formed.determine the percentage composition of each element. the simple formular of calcium chloride.
October 28, 2009 by yankoua

Physics
A 500.0 g metal block absorbs 3.25 103 J of heat to raise its temperature by 50.0 K. What is the substance? Please show steps because I have several problems like this and then I can see where I am goibg wrong
March 12, 2012 by Pat

physics / astronomy
A simple temperature model for the solar nebula disk is Tdisk(a) = 20 SQRT 100 AU/ a K, (1) where a should be expressed in AU in this equation. (a) Find the temperature in the solar nebula disk at the orbit of Mer- cury, Earth and Jupiter. (b) Where is the ...
November 13, 2014 by .

Astronomy
A simple temperature model for the solar nebula disk is Tdisk(a) = 20 � SQRT 100 AU/ a K, (1) where a should be expressed in AU in this equation. (a) Find the temperature in the solar nebula disk at the orbit of Mer- cury, Earth and Jupiter. (b) Where is...
November 13, 2014 by justin

Fluid Mechanics
A 6 kg. piece of metal displaces 1 liter of water when submerged. What is its density? The volume of the water dispaced was given, so... Density metal= massmetal/volumemetal The volume of water displaced is the same as the volume of the metal.
June 17, 2005 by Jarrad Schomaker

chemistry
A sample of aluminum metal containing 9.1080 x 10 to the 25 power atoms is drawn into a cylindrical wire with radius r=0.833 mm. how long must the wire be in meters?
February 2, 2014 by tricia

stat.
A sample consists of the following n  6 scores: 2, 7, 4, 6, 4, and 7. a. Compute the mean and standard deviation for the sample. b. Find the z-score for each score in the sample. c. Transform the original sample into a new sample with a mean of M  50 and s  10.
January 27, 2013 by Nickie

Physics
100-g sample of substance is heated to 100˚C and placed into calorimeter cup containing 150 g of water at 25˚C. The sample raises the temperature of water to 32.1. What is the specific heat of the substance?
March 21, 2010 by John

Chemistry
Which temperature change would cause the volume of a sample of an ideal gas to double when the pressure of the sample remains the same? 1. from 200C to 400C 2. from 400C to 200C 3. from 200K to 400K 4. from 400K to 200K
April 12, 2009 by .

Chemistry
Does sodium metal react with potassium hydroxide solution? No. It would be a displacement reaction and this only works if the metal is higher in the activity series than the one it wants to displace. Given that potassium is the highest ranked metal (sodium second), there ...
July 28, 2007 by Fiona

Chemistry, Urgent!
How is this question solved?! When 21.6g of a metal X are burned in excess oxygen, 40.8g of X2O3 are formed. From this data, what is the metal X?
May 13, 2009 by Kearstyn

factor label method (chem)
The density of mercury metal is 13.6 g/mL. what is the mass of 3.55 mL of the metal? i dont know where to begin on this question
February 7, 2010 by kelsy

Chemisrty 1
If ou knew the density of an unknown metal, do you think you could accurately determine the identity of the metal based on that property?
October 4, 2010 by Mariah

chemistry
part B. would you expect the emissions to vary if metal flourides were used rather than metal chlorides?
October 6, 2010 by JC

chem
A block of metal has a width of 3.2cm, a length of 17.1cm, and height of 3.6 cm. Its mass is 1.3 kg. Calculate the density of the metal.
September 7, 2011 by jake

Chemistry
How do you do this? A block of metal measuring 3.0 cm X 4.0 cm X 5.0 cm has a mass of 470.0g. What is the density of the metal in grams per cubic centimeter?
October 16, 2011 by Miranda

chemistry
A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 3.9cm . Its mass is 1.3kg . Calculate the density of the metal.
September 1, 2013 by joe

Chemistry
A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 5.8cm . Its mass is 1.5kg . Calculate the density of the metal.
September 2, 2013 by Jenn

Chem
A block of metal has a width of 3.2 cm , a length of 17.1 cm , and height of 5.2cm . Its mass is 1.2kg . Calculate the density of the metal
September 12, 2013 by Jillian

Chem
A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 4.3cm . Its mass is 1.2kg . Calculate the density of the metal.
September 16, 2013 by Cf

Chemistry
Ethanol (C2H5OH) boils at a temperature of 78.3oC. What amount of energy, in joules, is necessary to heat to boiling and then completely vaporize a 22.8 g sample of ethanol initially at a temperature of 16.5oC. The specific heat of ethanol is approximately constant at 2.44 JK-...
October 6, 2011 by tanner

Chemistry
Ethanol (C2H5OH) boils at a temperature of 78.3oC. What amount of energy, in joules, is necessary to heat to boiling and then completely vaporize a 13.1 g sample of ethanol initially at a temperature of 11.1oC. The specific heat of ethanol is approximately constant at 2.44 JK-...
October 6, 2011 by Carrie

Chemistry
Ethanol (C2H5OH) boils at a temperature of 78.3oC. What amount of energy, in joules, is necessary to heat to boiling and then completely vaporize a 28.6 g sample of ethanol initially at a temperature of 10.8oC. The specific heat of ethanol is approximately constant at 2.44 JK-...
October 7, 2011 by John

statistics
The average temperature in households is 67.6 degrees F. The standard deviation is 4.2 degrees F. A random sample of 51 households is to be selected What is the probability that the average of this sample will be within 1.4 STANDARD ERRORS of the population mean?
September 28, 2012 by Kristin

Statistics
Listed below are body temperatures for four subjects measured at two different times in a day. Body Temperature (𝐹) 𝑎𝑡 6 𝑎𝑚: 98.0,97.0,98.6,97.4 Body Temperature (𝐹) 𝑎𝑡 6 𝑝𝑚: 98.0,97.6,98.8,98.0 ...
April 26, 2016 by Nick

College Chemistry
a solution contains .25M Ni(NO3)2 and .25 M Cu(NO3)2. Can the metal ions be separated by slowly adding Na2CO3?Assume that for successful separation 99% of the metal ion must be precipitated before the other metal ion begins to precipitate, and assume no vlume change on ...
March 12, 2010 by Jim

physics
A copper of mass 400g is heated until it's temperature becomes 250 degree celcius.it is dropped into water weighing 200g at 50 degree celcius.calculate the mass of water vapour produced.
February 25, 2016 by christianah

chemistry
This is a lengthy problem, but I really don't understand it. Any assistance given would be greatly appreciated. An analysis was done on a rock sample to determine its rubidium content. The rubidium content of a portion of rock weighing .350g was extracted, and to the extracted...
February 15, 2010 by Jane

science
the list below shows three ways in which metals can react. a) strongly heat the metal in the air. b)add small pieces of the metal to cold water. c)add small pieces of the metal to dilute acid. in each case choose a b or c calcium oxide hydrogen (using zinc) magnesium chloride ...
March 18, 2011 by ellen

Astrophysics
Star Power and Temperature Star A and Star B Consider two stars that are the same size (they have the same diameter), but have different surface temperatures. Lets say Star As temperature is 3000 K and Star Bs temperature is 4500 K. Lets look at the ratio of Star Bs ...
October 9, 2012 by Lisa

chem
ok my professor lost me when explaining this material so please bare with me and help me step by step one of the questions is: after absorbing 1850J of energy as heat, the temperature of a .500-kg block of copper is 37C what was its initial temperature (the specific heat ...
October 12, 2011 by cheryl

Stastics
Did I do this right and should i show more work? Listed below are body temperatures for four subjects measured at two different times in a day. Body Temperature (𝐹) 𝑎𝑡 6 𝑎𝑚: 98.0,97.0,98.6,97.4 Body Temperature (𝐹) 𝑎&#...
April 26, 2016 by Davina

college chem
Ethanol (C2H5OH) boils at a temperature of 78.3oC. What amount of energy, in joules, is necessary to heat to boiling and then completely vaporize a 20.0 g sample of ethanol initially at a temperature of 13.6oC. The specific heat of ethanol is approximately constant at 2.44 JK-...
October 4, 2011 by john

Science-Chemistry
A 5.00 g sample of Al pellets (specific heat = .89 J/g degrees c) and a 10.00 g sample of Fe pellets (specific heat = .45 J/g degrees c) are heated to 100.0 degrees C. The mixture of hot Fe and Al is then dropped into 97.3 g of water at 22.0 degrees C. Calculate the final temp...
October 1, 2007 by Niclas

Physics
An iron ball weighing 200 gm and specific heat of 0.11 is removed from a furnace and dropped into 550 gm of water at 5 degrees Celsius and the water is heated to 5 degrees Celsius. What must have been the temperature of the furnace?
December 5, 2012 by Tsuna

Chemistry
A cubic piece of metal measures 7.50 cm on each edge. If the metal is nickel, whose density is 8.90g/cm^3, what is the mass of the cube?
March 1, 2011 by Kelsey

P-Chem
I am a bit confused on working this problem: Given that the work function () for a metal is 1.82 eV, calculate the threshold frequency for this metal.
September 15, 2011 by suzane

chemistry
what is the binding energy of an electron in a photosensitive metal (in kj/mol) if the minimum frequency of light that can eject electrons from the metal is 6.3 x 20^14 Hz?
November 7, 2011 by jj

chems
A cubic piece of metal measures 7.50cm on each edge. If the metal is nickel, whose density is 8.90 {\rm g/cm}^3, what is the mass of the cube?
September 3, 2012 by jason

Chemistry
A block of metal has a width of 3.2 cm , a length of 17.1cm , and height of 5.8cm . Its mass is 1.5kg . Calculate the density of the metal.
September 29, 2012 by Rae

Calculation in chemistry
8.0g of mettalicoxide were reduced by hydrogen to give a metal of 2.0g. Calculate the mole of d metal that will combined with 0.5moles of oxygen.
May 23, 2014 by Nurudeen

chemistry
A fixed amount of CH4 gas occupies a volume of 136 mL at a pressure of 567 mm Hg and a temperature of 19oC. What will be the volume, in mL, occupied by this sample of CH4 gas when the pressure is decreased to 421 mm Hg while holding the temperature constant?
July 28, 2015 by Mindy

physics
A technician makes a 5.0 kg metal object containing two partsone of iron and the other of aluminum.If it takes 504kj to change the objects temperature from 25 celcius to 165celciuswhat is the mass of each part
April 18, 2015 by Anonymous

Chemistry
350 calories of heat is added to a sample of nitrogen gas, and the temperature is increased by 89 degrees celsius. what is the mass of the sample of nitrogen gas? For this we'll presume that you are either given, or can find the specific heat of Nitrogen gas. Then plug them in...
October 31, 2006 by Allie

CHEM
A 5.00 g sample of Al pellets (specific heat = .89 J/g degrees c) and a 10.00 g sample of Fe pellets (specific heat = .45 J/g degrees c) are heated to 100.0 degrees C. The mixture of hot Fe and Al is then dropped into 97.3 g of water at 22.0 degrees C. Calculate the final temp...
October 1, 2007 by Charlie

Physical Science
Which of the following would reduce the resistance of a metal wire? A. increasing its thickness B. increasing its temperature C. increasing its length
July 17, 2013 by Lanny

chemistry
An insulated beaker contains 250.0 grams of water at 25oC. Exactly 41.6 g of a metal at 100.0oC was dropped in the beaker. The final temperature of the water was 26.4oC. Assuming that no heat is lost in any other way, calculate the specific heat of the metal. a. 0.159 J g-1 K-...
January 23, 2012 by utna

chemistry
The specific heat capacity of gold at 25C is 1.29010-1 J/g/K. For a 5.25102 g sample of gold, how much will the temperature increase if 6.908102 J of energy is put into the system? (Assume that the heat capacity is constant over this temperature range.)
September 25, 2014 by korko

College Chemistry
a sample bulb contained 0.712g of H2(g) at a certain temperature and pressure. At the same temperature and pressure, the bulb can hold 13.0g of an unknown gas. What is the molar mass of the unknown gas?
October 24, 2011 by Anonymous

Statistics
. A random sample is selected from a normal population with a mean of __40 and a standard deviation of __10. After a treatment is administered to the individuals in the sample, the sample mean is found to be M _ 42. a. How large a sample is necessary for this sample mean to be...
January 26, 2012 by Sharon

chemistry
Alkali metals react with water to form hydrogen gas and the hydroxide of the metal. When 3.55 grams of an alkali metal reacts with excess water, 1020ml of hydrogen gas, measured at STP, are evolved. What is the alkali metal?
December 6, 2010 by gina

chemistry
At 16C a sample of ammonia gas exerts a pressure of 11.7 atm. What is the pressure when the volume of the gas is reduced to one-fourth of the original value at the same temperature so the inital Temp=16 C initial Pressure. 11.7 final pressure-unknown temperature-same what next?
October 17, 2010 by april

Chemistry
Assume that 57.0 cal of heat is applied to a 28g sample of sulfur at 27 degrees C. What is the final temperature of the sample if the specific heat of sulfur is 0.175 cal/g degrees C?
December 9, 2012 by Marie

Probabilty & Statistic
A random sample is selected from a normal population with a mean of __40 and a standard deviation of __10. After a treatment is administered to the individuals in the sample, the sample mean is found to be M _ 42. a. How large a sample is necessary for this sample mean to be ...
January 23, 2012 by Sharon

chemistry
A sample of gas is at a pressure of 1 atm , a volume of 1 L , and a temperature of 25 degrees celsius. What would happen to the pressure if the volume were reduced to 0.5 L and the temperature increased to 250 degrees celsius?
November 8, 2010 by Anonymous

Chemistry
3. A liquid hydrocarbon (Cx Hy) is found to be 16.37% H by mass. A 1.158-g vaporized sample of the hydrocarbon has a 358 mL volume at 71.0 C and 749 mmHg. what is the molecular formula for this hydrocarbon? 4. A 1.00 g Sample of C7H603 (s), us completely burned in a bomb ...
June 21, 2011 by Katrina

chemistry
a cubic piece of metal measures 5.00 cm on each edge. if the metal is nickel, whose density is 8.90g/cm cubed, what is the mass of the cube?
September 11, 2008 by alice

Chemistry
A metal crystallizes in a face-centered lattice. The radius of the atom is 198pm and the density of the element is 6.57g/cm^3. What is the identify of the metal?
July 1, 2013 by Mark

Chemical Bonds
metal cations are atoms that have a positive charge. what type of bond is a metal cation likely to form?
January 28, 2014 by Cindy

chem
A cubic piece of metal measures 3.00cmcm on each edge. If the metal is nickel, whose density is 8.90 g/cm3{\rm g/cm}^3, what is the mass of the cube?
September 16, 2014 by dae

physics
In an old house, the heating system uses radiators, which are hollow metal devices through which hot water or steam circulates. In one room the radiator has a dark color (emissitivity = 0.818). It has a temperature of 64.8 oC. The new owner of the house paints the radiator a ...
May 15, 2012 by RM

Physics
In an old house, the heating system uses radiators, which are hollow metal devices through which hot water or steam circulates. In one room the radiator has a dark color (emissitivity = 0.804). It has a temperature of 65.9 oC. The new owner of the house paints the radiator a ...
December 5, 2012 by StressedStudent

PHYSICS
In an old house, the heating system uses radiators, which are hollow metal devices through which hot water or steam circulates. In one room the radiator has a dark color (emissitivity = 0.810). It has a temperature of 65.0 oC. The new owner of the house paints the radiator a ...
November 17, 2015 by Anonymous

PHYSICS
In an old house, the heating system uses radiators, which are hollow metal devices through which hot water or steam circulates. In one room the radiator has a dark color (emissitivity = 0.810). It has a temperature of 65.0 oC. The new owner of the house paints the radiator a ...
November 17, 2015 by Anonymous

chemistry
A 1.500-g sample of a mixture containing only Cu2O and CuO was treated with hydrogen to prduce 1.252 g pure copper metal. Calculate the percentage composition (by mass) of the mixture.
September 26, 2010 by kelly

chem
A 2.241 g sample of nickel reacts with oxygen to form 2.852 g of the metal oxide. Calculate the empirical formula of the oxide. Give the number of moles of each element to support you answer.
November 14, 2010 by sam

Chem
A 0.1098 g sample of copper metal is dissolved in 34 mL of concentrated HNO3 to form Cu2+ ions and then water is added to make a total volume of 209.5 mL. (Calculate the molarity of Cu2+.)
November 2, 2011 by ALMA

Chemistry
A 0.1052 g sample of copper metal is dissolved in 55 mL of concentrated HNO3 to form Cu2+ ions and then water is added to make a total volume of 208.5 mL. (Calculate the molarity of Cu2+.)
June 21, 2013 by Ashley

Chemistry
A 0.1052 g sample of copper metal is dissolved in 55 mL of concentrated HNO3 to form Cu2+ ions and then water is added to make a total volume of 208.5 mL. (Calculate the molarity of Cu2+.)
June 21, 2013 by Ashley

Physics
A2.0-kg piece of steel with a temperature of 70 degree C is submerged in 1.0 kg of water at 15 degree C. At what temperature does the water/metal system reach equilibrium? The specific heat of steel is 0.107 cal/(g*K). Specific Heat of water is 4185 J/(kg*K.( The answer is 27 ...
July 1, 2012 by AL

chemistry
a 5.00g sample of Al pellets (specific heat=0.89J/oC*g) and a 10.00g sample of Fe pellets (specific heat=0.45J/oC*g) are heated to 100.0oC. The mixture of hot iron Al is then dropped into 92.1g of water at 21.8oC. Calculate final temp of metal and water mixture, assuming no ...
November 6, 2007 by Rebekah

chemistry
A 49.3 g sample of ethylene glycol, a car radiator coolant, loses 624. J of heat. What was the initial temperature of ethylene glycol if the final temperature is 32.5C (c of ethylene glycol = 2.42 J/gK)? 624= 49.3 x 2.42(T-32.50) T = 37.73 = 38degrees is this correct? thank ...
October 13, 2015 by patrick

Chemistry
Suppose that in your experiment you conducted in lab you neglected to account for pressure due to water vapor in your collected sample of hydrogen gas. How, if at all, would this affect your final value of atomic weight of the metal?
November 12, 2009 by Lillian Nguyen

physics
A piece of metal has a mass of 85cg and a volume of 450L. What is its density in g/cm3? What would be the mass of 300 cm3 of this metal? What would be the volume of 00 ounces of this metal?
March 10, 2014 by Anonymous

gre math prob of a sample
sample standard deviation = 3 sample mean = 68 n=30 what is the probability that one student selected at random from the sample will have a height within one sample standard deviation of the sample mean? a. 1.00 b. 0.73 c. 0.57 d. 0.23
January 10, 2012 by luckybee

chemistry
A sample of gas has increased in temperature from 20 Celsius to 22 Celsius. Which of the following happens as the temperature of the gas goes up? A.The gas undergoes a phase change. B. The velocity of the gas particles decreases. C.The kinetic energy of the particles ...
July 29, 2011 by kendra

Physics
A 1.45 mol sample of an ideal gas (γ = 1.40) is carried through the Carnot cycle described in the figure below. At point A, the pressure is 28.5 atm and the temperature is 600 K. At point C, the pressure is 1.00 atm and the temperature is 400 K. How do I get the pressure ...
June 6, 2011 by Alex

Chemistry
Determination of Ksp, ΔG, ΔH and ΔS for Ca(OH)2. *** Need help on problem #3 & #4 *** CALCULATIONS: 1. Calculate the average solubility of calcium hydroxide, Ca(OH)2, at each temperature. 2. Calculate the Ksp for Ca(OH)2 at each temperature. 3. Calculate the...
March 18, 2014 by Airin

Chemistry
A sample of gas with a volume of 14.9 liters at 2.6 atmospheres pressure and a temperature of 25C is allowed to expand to a volume of 29.3 liters at a temperature of 15C. What is the final pressure (atm)atof the gas?
March 25, 2013 by Linzy

chemistry
a sample containing 1.50 mol neon gas has a volume of 8.00L.what is the new volume of the gas in liters when the following changes occur in the quantity of the gas at constant pressure and temperature? a.a leak allows on-half of the neon atoms to escape. b. a sample of 25.0g ...
June 27, 2010 by Jetta

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