# How would I find the volume occupied by 3 moles of N2 at zero degrees and 101.325 kPa?

113,388 questions
1. ## Chemistry

How would I find the volume occupied by 3 moles of N2 at zero degrees and 101.325 kPa?

asked by anonymous on December 10, 2007
2. ## Chemistry

What is the volume in liters occupied by 37.7 moles of CO2 at 9.54 atm and 55 degrees?

asked by Syneitra on December 7, 2011
3. ## Chemistry

What volume (in liters) is occupied by 0.01 moles of carbon monoxide, CO at 9 degrees C and 0.973 atm?

asked by Ambra on May 1, 2012
4. ## Chemistry

What volume (in liters) is occupied by 0.01 moles of carbon monoxide, CO, at 9 degrees celcius and 0.973 atm?

asked by Persia on July 21, 2008
5. ## Chemistry

What volume (in liters) is occupied by 0.01 moles of carbon monoxide, CO, at 9 degrees celsius and 0.973 atm?

asked by Kewanka on November 29, 2010
6. ## Chemistry

It turns out that the Van Dar Waals constant b is equal to four times the total volume actually occupied by the molecules of a mole of gas. Using this figure, calculate the fraction of the volume in a container actually occupied by Ar atoms: a) at STP b)

asked by Anonymous on January 9, 2011
7. ## chemistry

calculate the molar mass of an unknown whose mass was 0.846 g, and occupied a volume of 354 cm3 at a pressure of 752 torr and a temperature of 100 degrees celcius. I came up with .0114 moles, I want to know if this is correct.

asked by Carla on July 13, 2011
8. ## Physics

Find the volume occupied by 3.14 moles of an ideal gas at standard conditions of pressure and temperature (P = 1.00 atm, T = 273 K).

asked by Dave on December 8, 2015
9. ## AP Chem

Helium gas, He, at 22 degrees C and 1.00 atm occupied a vessel whose volume was 2.54 L. What volume would this gas occupy if it were cooled to liquid-nitrogen temperature (-197 degrees celcius). What is the equation?

asked by Anna on November 9, 2008
10. ## chemistry

Find volume of carbon dioxide occupied by 1.0g of CO2 at 0 degrees Celsius and pressure 25.0 torr.

asked by Allison on March 10, 2015
11. ## chemistry

use the molar volume of a gas to solve the following at STP: a. the number of moles of O2 in 44.8 L O2 gas. b. the number of moles of CO2 in 4.00L CO2 gas. c. the volume(L) of 6.40g O2. d. the volume(mL) occupied by 50.0g neon.

asked by Jetta on June 27, 2010
12. ## chemistry

what is the volume occupied by 2 moles of ammonia at s.t.p(1mole of gas at s.t.p=22.4)

asked by henry on May 4, 2015
13. ## chemistry

26 g of methane CH4 has a pressure of 450 kPa at 250 degrees celcius find the volume occupied by the gas

asked by db on April 11, 2012
14. ## Chemistry

A gas occupied a volume of 3.50 L at 27 degrees celcius and 400.0 mmHg. What is the new temperature if the pressure changes to 0.789 atm and the volume is decreased to 2.50 mL

asked by Tori on January 12, 2011
15. ## chemistry

What is the volume, in L, occupied by 3.260 moles of NO2 gas at STP conditions?

asked by Mindy on July 28, 2015
16. ## chemistry

What is the volume, in L, occupied by 1.20 moles of C2H6 gas at a temperature of 125oC and at a pressure of 1.55 atm?

asked by Mindy on July 28, 2015
17. ## moles of water produced?

We mixed HCl and NaOH into water and got this table, all for trial 1 Here is all of the info for trial 1: trial 1: volume of 2 M NaOH used: 50.0 mL initial temperature of NaOH: 24.4 degrees C volume of 2 M HCl used: 50.0 mL initial temperature of HCl: 24.3

asked by Abdullah on March 12, 2010
18. ## Chemistry

At STP,a certain mass of gas occupied a volume of 790cm³,find the temperature at which the gas occupied 1000cm³ and has a pressure of 728mmhg

asked by Bulus on February 5, 2019
19. ## chem

Methyl alcohol can be used as a fuel instead of, or combined with, gasoline. A sample of methyl alcohol, CH3OH, in a flask at constant volume exerts a pressure of 254 mm Hg at 57 degrees C. The flask is slowly cooled. a) assuming no condensation, use the

asked by Chris on March 16, 2007
20. ## Chemistry

What volume would be occupied by 100 g of oxygen gas at a pressure of 1.50 atm and a temp of 25 degrees C.

asked by Danielle on March 22, 2011
21. ## chemistry

What is the volume occupied by 20.2g NH3(g) at -25 degrees celsius and 752 mmHg? This is Ideal Gas Law.

asked by Ambrosia on February 28, 2013
22. ## chemistry

The density of liquid water is 0.997 g/mL at 25 degrees Celsius. a) Calculate the mass of 250.o mL (about a cupful) of water. b) How many moles of water are in 250.0 mL of water? Use the result from letter a. c) Calculate the volume that would be occupied

asked by khloe on November 15, 2011
23. ## science

What volume of H2 gas, in mL, would be occupied by 0.00465 moles of H2 gas at a temperature of 0 °C and a pressure of 760 mmHg?

asked by honest on February 18, 2016
24. ## Chemistry

Please help! How many moles of hydrogen are needed to triple the volume occupied by 0.25 mol of hydrogen, assuming no changes in pressure or temperature

asked by Michelle on May 25, 2011
25. ## Chemisty

Calculate the Volume occupied by 1.5 moles of an ideal gas at 25 degrees Celsius and a pressure of 0.80 atm. (R= 0.08206 L atm/(mol*K). I've tried using the ideal gas law: PV=nRT but i can't seem to get where I am getting lost. V=(1.5mol)(0.08206 L

asked by Kimberly on March 29, 2017
26. ## AP Chemistry

Given: N2O4 (g) « 2NO2 (g) @ 25 degrees celcius, Kc is 5.84 x 10^-3. (A) Calculate the equilibrium concentrations of both gases when 4.00 grams of N2O4 is placed in a 2.00 L flask at 25 degrees celcius. (B) What will be the new equilibrium concentrations

asked by Frank on April 22, 2010
27. ## chemistry

How many moles of methane occupy a volume of 2.00 L at 50.0 degrees C and 0.500 atm? What formula do I use and how do I get it to moles??

asked by Mae on December 13, 2009
28. ## Chemistry

Use molar volume to solve the following problems at STP. Find the volume mL occupied by 0.400 mole He. Find the number of grams of neon contained in 10.2 L Ne gas

asked by Aaron on May 17, 2010
29. ## chemistry

So I did a titration lab at school with NaOH and HCl. i have to find: - volume used, NaOH - Moles of NaOH - Moles of HCl -Volume used unknown HCl - Molarity of HCl solution My concentration of NaOH stock solution was 0.100 mol/lL Final buret reading, NaOH:

asked by julie on January 4, 2015
30. ## chemistry

This problem is from my chemistry book and I am having a little trouble with the intermediary steps: Barium metal crystallizes in a body- centered cubic lattice (atoms at lattice points only) The unit cell edge length is 502 pm, and the density of the

asked by Tokey on May 18, 2010
31. ## chemistry

0.361g of an unknown liquid occupied a volume of 250.0 ml Hg pressure and 100 degrees celcius. what is the molar mass?

asked by khela on November 8, 2010
32. ## Chemistry (Check)

Part B True-False Classify each of the statements as always true, sometimes true, or never true. 1.____ST______ one mole of any gas occupies a volume of 22.4 L. 2_____NT______ for a substance of known molar mass, the number of moles of a sample can be

asked by Bryan on February 5, 2007
33. ## chemistry

0.361g of an unknown liquid occupied a volume of 250.0 ml at 758mm Hg pressure and 100 degrees Celsius. what is the molar mass?

asked by khela on November 9, 2010
34. ## Chemistry: Dr. Bob, can you check my work?

In the "Methode Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is given below. C6H12O6(aq) 2 C2H5OH(aq) + 2 CO2(g) Fermentation of 712 mL grape juice (density = 1.0 g/cm3) is allowed to take place in a

asked by Zachary on November 15, 2012
35. ## General Chemistry

We mix 112 grams of oxygen gas with 118 grams of argon gas in a volume of 1752 mL at 74 degrees celsius. What will be the final pressure of the gas mixture? First, I converted the grams into moles. 112g O2 * (1mol O2/ 32g O2) = 3.5 moles O2 118g Ar * (1mol

asked by Sabrina on October 26, 2014
36. ## chemestry

how do you solve the ideal gas law when you are given the temperature in celcius instead of kelvin. Heres an example question. Calculate the volume occupied by 3.25 moles of carbon dioxide at 25degrees celcius and 750mm Hg.

asked by hellogoodbie on January 11, 2010
37. ## Chemistry 111

A gas occupies a volume of 256mL at a pressure of 250torr at 32 degrees Celsius. Calculate the pressure (in atmosphere)if the volume is reduced to 156mL and the temp is increased to 62 degrees Celsius. I really need the formula that I would be using. I am

asked by Lotty on December 3, 2010
38. ## Chemistry

What will be the new pressure when a volume of 21.0 L of a gas at 35.0 degrees celsius and 2.00 atm is compressed to 12.0 L and cooled to 10.0 degrees celcius with no change in the number of moles?

asked by Tori on January 12, 2011
39. ## Havlicek

12.5 moles of a gas occupy 32.0 liters at 100.0 degrees Celsius. What is the volume of 37.5 moles of the gas at 25.0 degrees Celsius?

asked by Jocelyn on February 7, 2014
40. ## chemistry

A 10.0L flask contains 3.0atm of ethane and 8.0 atm of oxygen at 28 degrees C. The contents of the gas are reacted and allowed to return to 28 degrees C. What is the pressure of the flask? Using n=RT/PV I converted atm to moles and then used the balanced

asked by TJ on December 8, 2011
41. ## Chem

Then, determine the final volume needed to dilute 20.0 ml of 1.00 M NaOH to 0.25 M. Next, find the volume of water which needs to be added. Finally, determine the moles and the mass in grams of NaOH in the solutions. Do I take 60 ml and convert it to moles

asked by Feather on September 28, 2014
42. ## Chemistry

Calculate the average disappearance of A between t=0 min and t=10 min in units of M/s. 0 min there are .065 moles of A 10 min there are .051 moles of A 20 min there are .042 moles of A 30 min there are .036 moles of A 40 min there are .031 moles of A The

asked by Anonymous on November 13, 2009
43. ## chemistry

What is the volume occupied by 0.118 mol of helium gas at a pressure of 0.97atm and a temperature of 32 degrees celius? R=0.0821 L atm/mol K

asked by Tracey on April 18, 2010

when the oxide of arsnic is heated it sublimes and becomes a gas at 650oc and a pressure of 690mmHg the 0.927g sample of the oxide has a volume of 194cm calculate the volume in cm3 that the sample would have at 0oc and 760mmHg(ie at STP)if it were to

asked by john on January 30, 2007
45. ## Chemistry partial molar volumes

The partial molar volumes of the CCl4 and benzene are 122cm3/mol and 98.0 cm3/mol, respectively in a solution in which mole fraction of chloroform is 0.2. Calculate the volume occupied by 2.5 moles of the solution. Thank yOu.

asked by Urgent pls. on August 24, 2011
46. ## Chemistry! urgent

what volume of gas at 40°C and 1.50 atm is necessary to react with 300 L of hydrogen gas measured at the same conditions? 2H2 (g) + O2 (g) --> 2H20 (g) 1.50 atm= 151.KPa How would I solve this? Because I can't use: PV = nRT I have pressure, temperature,

asked by Sarah on January 10, 2018
47. ## Gases - van der waals

It turns out that the van der Waals constant b equals four times the total volume actually occupied by the molecules of a mole of gas. Using this figure, calculate the fraction of volume in a container actually ocupied by Ar atoms (a) at STP, (b) at 100

asked by Jenn on December 7, 2006
48. ## Algebra

The pressure of a gas varies jointly as the amount of the gas (measured in moles) and the temperature and inversely as the volume of the gas. If the pressure is 975 kPa(kiloPascals) when the number of moles is 4, the temperature is 250 K, and the volume is

asked by Nicole on December 5, 2012
49. ## chem

A scuba diver's tank contains .25 kg of oxygen compressed into a volume of 4.3 L (for oxygen, 32g = 1 mole) Calculate the gas pressure inside the tank at 9 degrees Celsius What volume would this occupy at 26 degrees Celsius and .95 atmospheres? can someone

asked by Bob on November 2, 2010
50. ## algebra

Solve the problem. The pressure of a gas varies jointly as the amount of the gas (measured in moles) and the temperature and inversely as the volume of the gas. If the pressure is 1170 (kiloPascals) when the number of moles is 6, the temperature is 260

asked by Joe on December 8, 2016
51. ## AP Chem

Sorry, I have one other question. How would I go about solving this problem? What fraction of the total volume of a closet packed structure is occupied by atoms? What fraction of the total volume of a simple cubic structure is occupied by atoms? Do i need

asked by Nick on January 1, 2008
52. ## physics

density of silves is 10.5 X 10^3 kg/m^3. find the volume occupied by 2 kg of silver.

asked by Bailey on October 26, 2008
53. ## chemistry

Equation- Mg + 2HCl -> MgCl2 + H2 What volume of hydrogen at STP is produced from the reaction of 50.0 g of Mg and the equivalent of 75g of HCl? To get the volume of hydrogen, you need to know how many MOLES of hydrogen are produced. To know this, you need

asked by student on January 28, 2007
54. ## chemistry

Ideal Mixed Gas Law problems 1. What is the pressure generated by a mixture of 25.6 g SO2 and 12.6 g Ne in a container of 72.45 L and temperature of 131 K? 2. What is the pressure of a mixture of 5.80 moles Kr and 2.71 moles Xe in a container with a volume

asked by Theresa on February 23, 2015
55. ## 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 2, 2015
56. ## chemistry

determine the vapor pressure of a solution at 55 degrees C that contains 34.2g NaCl in 375 mL of water. The vapor pressure of pure water at 55 degrees C is 118.1 torr. so Psolution=XsolventPsolvent I don't know why I'm not getting the correct answer... so

asked by natash on May 11, 2008
57. ## Chemistry

In a reaction between pure acetic acid and sodium bicarbonate, 14.7 grams of sodium bicarbonate was added to 21.0 mL of acetic acid. Which reactant is the limiting reactant in this reaction? Name of limiting reactant (acetic acid or sodium bicarbonate):

asked by Kayla on September 13, 2013
58. ## Chemistry

Find the mininum ammount of 5.0 M HNO3 needed to dissolve 2.72 g of Cu (s). I have the balanced equation here: 2NO3-(aq)+8H+(aq)+3Cu(s)-->2NO(g)+4H2)(l)+3Cu2+(aq) Obviously it is a 2 moles NO3- to 3 moles of Cu (s) ratio. I converted grams Cu to moles

asked by Phat Pat on May 7, 2010
59. ## chemistry

A sample containing 5.20g O2 gas has a volume of 19.0L, pressure and temperature remain constant, Oxygen is released until the volume is 7.00L how many moles of O2 are removed I know i convert 5.20g to moles which give me 0.1625 moles of O2 and i use the

asked by SHARON on July 24, 2011
60. ## Chemistry

A scuba tank contains heliox, a special breathing gas composed of 5.0% oxygen and the remainder helium, for use by divers that spend extended amounts of time at depth underwater. The volume of the tank is 20 L and the pressure within it is 1500 lb/in2.

asked by alexis on May 3, 2015
61. ## Chem.

2SO2(g) + O2(g) ---> 2SO3 It says that 12.0 L of sodium trioxide are produced at 100 degrees celcius. What volume of oxygen is produced? How would I go about doing this. I was going to use PV=nRT but I dunno the pressure so I can't find the moles. What do

asked by Lena on December 11, 2008
62. ## chemistry

I am looking at the material in the text over and over and cannot understand this!........help,how do I figure this out? Find the volume occupied by 0.500 mole He at STP .

asked by michelle on May 18, 2010
63. ## AP Chem

Can someone please check these problems? 34. You fill a balloon with helium gas to a volume of 2.68 L at 23 degrees C and 789 mmHg. Now you release the balloon. What would be the volume of helium if its pressure changes to 632 mmHg but the temperature is

asked by Anna on November 12, 2008
64. ## Chemistry

at a pressure of 390.0 kPa, a sample of ideal gas containing 110. moles of propane is collected at a tempature of 55 degrees celcius. find the volume of the propane tank used

asked by Elizabeth on February 25, 2013
65. ## Chemistry

at a pressure of 390.0 kPa, a sample of ideal gas containing 110. moles of propane is collected at a tempature of 55 degrees celcius. find the volume of the propane tank used

asked by Elizabeth on February 25, 2013
66. ## chemistry

what volume would 4.3 moles of hydrogen gas occupy at 45 degrees and 3.22 atm?

asked by tessa on February 27, 2014
67. ## chemistry

what is the volume of 4.37 moles of an ideal gas at 26.5 degrees celsius and 1.00 atm?

asked by Amanda on June 19, 2010
68. ## chemistry

Calculate the volume of 6.00 moles O2 gas at 30cm Hg and 72 degrees farenheit, thanks.

asked by Rae on August 8, 2010
69. ## Chemistry

A gas has a volume of 4.00 at 0. What final temperature in degrees Celsius is needed to cause the volume of the gas to change to the following, if (number of moles of gas) and are not changed? 290 L

asked by Brittany on November 23, 2010
70. ## chemistry

A gas has a volume of 5.60 at 0. What final temperature in degrees Celsius is needed to cause the volume of the gas to change to the following, if (number of moles of gas) and are not changed?

asked by Anonymous on March 24, 2011
71. ## chemistry

Find the molar masses of the following compounds: 1. LiI 2. PbCO4 3. Mg(OH)2 4. (NH4)3PO4 Find the percent composition (percent by mass) of the given element in the following compounds: 1. Fluorine in AgF 2. Hydrogen in glucose (C6H12O6) 3. Oxygen in

asked by Alex on March 2, 2015
72. ## Chem hw!

1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04-L sample of gas is doubled at constant temperature, what will be the new volume of the gas? 3. A 1.04-L sample of gas

asked by Teisha on March 11, 2010
73. ## Chem hw!

1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04-L sample of gas is doubled at constant temperature, what will be the new volume of the gas? 3. A 1.04-L sample of gas

asked by Teisha on March 11, 2010
74. ## Chemistry

How many moles of oxygen will occupy a volume of 2.5 liters at 1.2 atm and 25 degrees celcius

asked by Cecilia on February 28, 2010
75. ## Chem

How many moles of oxygen will occupy a volume of 2.5 liters at 1.2 atm and 25 degrees celcius

asked by Anonymous on May 28, 2010
76. ## ap chem

could you please check my work? what is the volume of one mole of solid iron at 25 degrees c? 1 mol Fe/.141 mol/cm^3 = 7.10 cm^3 (the .141 came from converting the density in to moles) is that correct? then the next step in the problem is to find the

asked by John on January 24, 2008
77. ## science

An intermediate reaction used in the production of nitrogen containing fertilizers is that b/w NH3 and O2 4NH3(g) + 5O2(g)--> 4NO(g) + 6H2O(g) A 150.0-L reaction chamber is charged with reactants to the following partial pressures at 500 degrees C: P(sub

asked by Chris on January 4, 2007
78. ## chem

Show work 1. How many moles of oxygen will occupy a volume of 2.50 liters at 121.6 kPa and 331 K? 2. An unknown volume of chlorine gas (Cl2) is resting at 127 °C at a of pressure 152.4 kPa. If the gas weighs 191.4 g, what is the volume? 3. A 2.917 mole

asked by theresa on February 22, 2015
79. ## Chemistry

At 25 degrees celsius,one cm3 of iron mass of 7.62 grams. What volume of iron is occupied by 125 grams of iron

asked by Pearl on July 21, 2011
80. ## chemistry

Initially, there are 33 moles of A and 0 moles of B. How many moles of A and B will be present after the system reaches equilibrium? a) 33 moles A; 0 moles B b) 0 moles A; 33 moles B c) 3 moles A; 30 moles B d) equal amounts of A and B The answer is given

asked by Adam on April 27, 2011
81. ## Math

Forty percent of the 20 seats on the bus were occupied. Write 40% as a reduced fraction. Then find the number of seats that were occupied.

asked by Brittany on January 17, 2016
82. ## 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
83. ## 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
84. ## 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
85. ## Physics

A 100g piece of ice at 0 degrees celcius is placed into a container holding 200g of water, initially at temperature 25 degrees celcius. Heat flows from the water to the ice, cooling the water and melting the ice. Calculate a) how many moles of ice and how

asked by Betty on November 4, 2015
86. ## physics

Two moles of neon gas at 25oC and 2.0 atm is expanded to 3 times the original volume while the pressure is reduced to 1.0 atm. Find the end temperature. A. 447degreesC B. 174 degreesC C. -66 degrees C D. 38degreesC E. 150degreesC

asked by Idali on April 9, 2017
87. ## sciencee

1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04-L sample of gas is doubled at constant temperature, what will be the new volume of the gas? 3. A 1.04-L sample of gas

asked by Teisha on March 9, 2010
88. ## chemistry

A gas sample occupies a volume of 400.0ml at 298.15k at costant pressure. what is the final temperature when the volume occupied decreased by 39.0

asked by Anonymous on February 5, 2015
89. ## Ap Chemistry

In a class discussion, my teacher told me that 74.06% of the volume of each unit cell is occupied by atoms (in the cubic closest structure). Where does this percentage come from? How can I find it?

asked by Matt on January 7, 2008
90. ## Math

1. Find the value of Sin^-1(-1/2) a. -30 degrees b. 30 degrees c. 150 degrees d. 330 degrees 2. Find the exact value of cos(-420 degrees) a. -1/2 b. 1/2 c. sqrt of 3/2 d. -sqrt of 3/2 3. p(-9/41, 40/41) is located on the unit circle. Find sin theta. a.

asked by Belden on April 5, 2008
91. ## Chemistry

I have no idea how to do this problems can somebody help me: 1.How many mL of and oxygen gas can be produced form the termal decmpositon of 0.340 g of hydrogen peroxide at 700°C and 755 mm Hg? 401 mL 803 mL 1200 mL 1610 mL 2.How many mL of oxygen gas at

asked by Ryan on April 21, 2007
92. ## 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
93. ## Chem

If 2.41 moles of an ideal gas has a pressure of 4.65 atm, and a volume of 27.33 L, what is the temperature of the sample in degrees Celsius?

asked by rachel on March 7, 2018
94. ## Chemistry

If 5.01 moles of an ideal gas has a pressure of 4.81 atm, and a volume of 86.95 L, what is the temperature of the sample in degrees Celsius?

asked by Noelia on November 19, 2013
95. ## chem

If 1.83 moles of an ideal gas has a pressure of 1.30 atm, and a volume of 29.85 L, what is the temperature of the sample in degrees Celsius?

asked by neymar on November 21, 2016
96. ## chemistry

calculate the number of moles there are when a gas occupies a volume of 3.95L at 37 degrees C and .985 atm

asked by Quentin on May 4, 2010
97. ## math

Hi! I am super confused with this question and really need help. In a right triangle with a leg of 4 and a hypotenuse of 8, find the measures of all angles. a. 27 degrees, 63 degrees, 90 degrees b. 30 degrees, 60 degrees, 90 degrees c. 40 degrees, 50

asked by girly girl on January 30, 2018
98. ## Chemistry Check

The Synthesis of hydrogen chloride is written H2+Cl2==>2HCl. 3L of hydrogen are used and all gasses are at STP. The volume of HCL produced in the reaction would be _______ L. would the answer be 5.96? Three liters of H2 yields six liters of HCl, from the

asked by Briana on January 19, 2007
99. ## Chemistry

What is the concentration of Na+ ions if 35.0 mL of 2.50 M NaOH is reacted with 47.0 mL of 1.50 M HCl? I did M=Moles/Volume Moles=M*V Moles=2.50M*0.035= 0.0875 Am I right? If I am right, I don't know what to do next. Please help

asked by annoymous on March 3, 2015
100. ## Chemistry

Can you convert density to moles? I am given the density of a substance [0.789 g/mL] but I need to know the number of moles for the equation. You cannot convert density to moles, unless you also know the volume and the molecular formula. (density) * Volume

asked by Alexandria on December 28, 2006