# Gas X has a density of 2.60/L at STP. Determine the molar of this gas. Please show me the steps to solve this problem. thanks You just need the definition. One mol of a gas at STP occupies 22.4 L.

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1. ## chemistry

A 1.00L sample of a gas has a mass of 1.92g at STP. What is the molar mass of the gas? (This is a question on my chemistry worksheet, and I can't find the answer in my book.)

2. ## Chemistry

Check my answer please? A reaction requires 22.4 L of gas at STP. You have 45.0 L of gas at 100 kPa and 373 K. Which of the following statements is true? The gas constant is 8.31 L-kPa/mol-K. You will have an excess of gas and the reaction will occur.

3. ## Chemistry

A gas occupies a volume of 140 mL at 35.0 C and 97 kPa. What is the volume of the gas at STP? N = ( P )( V ) / ( R ) ( T ) N = ( 97.00 ) ( 140 /1000 ) / ( 8.314 ) ( 308.15 ) = 0.005300 gmol V sub STP = ( N ) ( R ) ( T sub STP ) / ( P sub STP ) V sub STP =

4. ## Chemistry

Please show me the steps..... At STP, 3.00 L of nitrogen gas contains the same number of molecules as A) 1.00 L of nitrogen gas B) 2.00 L of oxygen gas C) 3.00 L of chlorine gas D) 4.00 L of hydrogen gas

5. ## chemistry

a 2.00-liter sample of a gas has a mass of 1.80 grams at STP. What is the density , in grams per liter , of this gas at Stp?

6. ## Chemistry 105

Use the molar volume of a gas at STP to calculate the density (in g/L ) of carbon dioxide gas at STP.

7. ## physics

A gas at 250K and 15atm has a molar volume smaller than calculated from perfect gas law Calculate: a) the compression factor under these conditions b) the molar volume of gas

8. ## Chemistry

A reaction requires 22.4 L of gas at STP. You have 30.5 L of gas at 101.5 kPa and 373 K. Which of the following statements is true? (Use the ideal gas law: PV = nRT where R = 8.31 L-kPa/mol-K.) You will have excess gas for the reaction. You will have

9. ## Advance Chemistry

A series of measurements are made in order to determine the molar mass of an unknown gas. First, a large flask is evacuated and found to weigh 134.567 g. It is then filled with the gas to a pressure of 735 torr at 31°C and reweighed; its mass is now

10. ## Chemistry

A sample of methane (CH4) gas contains a small amount of helium. Calculate the volume percentage of helium if the density of the sample is 0.70902 g/L t 273K and 1.00 atm. I know that the sample is at STP and that the 1 mole of gas under these conditions

11. ## chemistry

Calculate the density of chlorine gas in g/L, at STP I'm coming up with 3.2g/L (by using 70.9 g Cl2) Cl gas is diatomic, correct? Is this correct?

12. ## Chemistry

Gas X has a density of 2.60 g/L at STP. Determine the molar mass of this gas.

13. ## Chemistry

The density of an elemental gas is 1.7824 g/L at STP. What is the molar mass of the element?

14. ## Chemistry

A 0.0677g sample of magnesium metal reacted with excess hydrochloric acid to produce 69.9 ml of hydrogen gas. The gas was collected over water at 21.0 degrees Celsius. The levels of water inside and outside the gas collecting tube is identical. The water

15. ## Chemistry

Calcium carbonate of mass 10g was heated until there was no further change A. Write an equation for the reaction B. Calculate the mass of the residue C. Calculate the volume of gas evolved at STP D. What would be the volume of the gas measured at 15°C and

16. ## chemistry

The density of a gas is 2.0 grams per liter at STP. Its molar mass is approximately?

17. ## Chemistry

Determine the density of CO2 gas at STP.

18. ## Chemistry

3.15 g of an unknown gas at 53 °C and 1.00 atm is stored in a 1.55-L flask. The gas has a density of 2.03 g/L. What is the molar mass of the gas?

19. ## Chemistry

Calculate volume of ammonia gas produced at STP when 140g of nitrogen gas is reacted with 30g of hydrogen gas.

20. ## chemistry II

If a 2.15-g sample of gas occupies 750. mL at STP, what is the molar mass of the gas at 125 degrees celcuis

21. ## Chemistry

A certain gas has a density of 1.053 g/L at 25C and 752 mmHg. What is the molar mass of this gas?

22. ## chemistry II

If a 2.15-g sample of gas occupies 750. mL at STP, what is the molar mass of the gas at 125 degrees celcuis

23. ## chemistry

At STP, 412 ml of gas have a mass of 2.60 g. What is the molar mass of gas?

24. ## Chemistry

Gas X has a density of 2.60/L at STP. Determine the molar of this gas. Please show me the steps to solve this problem. thanks You just need the definition. One mol of a gas at STP occupies 22.4 L. You have the mass of 1 L. Just calculat the mass of 22.4 L.

25. ## Chemistry

Using molar volume (STP) or the ideal gas law equation, determine the molar mass, g/mole, of each of the following:1.)11.1g of a gas that has a volume of 1.50L at STP. 2.) 0.742g of a gas that has a volume 860mL at 1.28atm and 18∘C. 3.) 2.42g of a gas

26. ## HELLO I NEED HELP AND NOBODY EVER HELPS ME.

1. the molar mass of helium is 4.00 g/mol. calculate the volume of 1 mol of helium at STP (T = 273, P = 1 atm) what is the density of helium at STP? 2. the density of an ideal gas is 1.35 kg/m^3. if the temperature is Kelvin and the pressure are both

27. ## chemisrty

can anybody give me the density of arsenic oxide at STP is this the correct formula volume = mass/ density thanks Yes, but if you want the density, it is density = mass/volume. The number I have seen floating around on this board is 17.8 g/L but the

28. ## Chemistry

A gas mixture is made by combining 7.2 g each of Ar, Ne, and an unknown diatomic gas. At STP, the mixture occupies a volume of 14.30 L. What is the molar mass of the unknown gas? Identify the unknown gas.

29. ## chemistry

Calculate the molar mass of CH4 gas at STP when 5.46L Of the gas weights 4g

30. ## Chemistry

A volume of 0.155 L of a gas at STP weighs 0.412 g. Calculate the molar mass of the gas.

31. ## Chemistry 22

1. What is the Kelvin temperature of a system in which 4.50 mol of a gas occupy 0.250 L at 4.15 atm? 2. In the lab, students generated and collected hydrogen gas according to the following equations: Zn + H2SO4---> H2 + ZnSO4 a) How many mL of hydrogen gas

32. ## chemistry

the molar mass of an unknown gas was measured by an effusion experiment. it took 63s for te gas to effuse. where as nitrogen gas took 48sec. what is the molar mass of the gas? 32g/mol 37g/mol 24g/mol 16g/mol 48g/mol

33. ## science

a sample of natural gas at stp is 78% ch4 and 22% c2h6 by volume. how many moles of each gas are presented in 2 L of the mixture.assume ideal gas behavior

34. ## Physics

Standard Temperature and Pressure (STP) is defined as a temperature of 0.00oC and a pressure of 100kPa. If the molar mass M of nitrogen is 14.0 g/mol, find the density (kg/m3) of nitrogen gas (N2) at STP. Nitrous Oxide or laughing gas is composed of the

35. ## Chemistry

Determine the molar mass of each of the following gases? A. 2.90 g of gas that occupies 0.500 L at 0 C and 1.00 atm (STP) B. 1.48 G of gas that occupies 2.00 L at 0 C and 760 mmHg (STP) C. 0.726g of a gas that occupies 855 mL at 1.20 atm at 18 C? D. 2.32 G

36. ## Chem

What is the density of N2O, a gas, at STP? How many moles are in 16 grams of O2? density = mass/volume 1 mol of a gas occupies 22.4 L at STP. density = molar mass/molar volume = ?? #2. 1 mol O2 has a mass of 32 grams? grams = mols/molar mass = ??

37. ## Chemistry

An unknown diatomic gas has a density of 1.428 g/L at STP. What is the identity of the gas? (Enter the formula of the gas. Omit states-of-matter from your answer.)

38. ## 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

39. ## Chemistry

1.Calculate the density of oxygen, O2, under each of the following conditions: STP 1.00 atm and 20.0 ∘C 2.To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 4.3-L bulb, then filled it with the gas at

40. ## P-Chem

Can you check my answer? Thank you What is the molar mass of a gas that behaves ideally (i.e. obeys the perfect gas law pV=nRT) if it has a density of 1.92 g dm-3 at 150 kPa and 25 C? I got; M=p(density)RT/(P)=31.7 kg mol^-1

41. ## Chemistry

An unknown gas has a molecular weight of 30.07 g/mol. What is the density of the gas at STP?

42. ## Chemistry

If a certain gas has a density of 2.34 g/L at 27.0C and 742 torr, what is the molar mass of this gas? I am not sure what formula to use to solve this problem.

43. ## chemistry

A 0.0677 g sample of magnesium metal reacted with excess hydrochloric acid solution to produce 69.9 mL of hydrogen gas. The gas was collected over water at 21.0° C. The levels of water inside and outside the gas collecting tube are identical (meaning that

44. ## Chemistry

Determine the molar mass of a gas with a density of 1.3786 g/L at 80.00 degress celsius and exactly 1 atm.

45. ## chemistry

a 2.00-liter sample of a gas has a mass of 1.80 grams at STP. What is the density , in grams per liter , of this gas at Stp?

46. ## chemistry

Gas X has a density of 2.60g/L at STP. Determine the molar mass of this gas. Sorry there was some typos on the previous question. please show me again steps by steps. thank you =] Same answer. You just left the g off the density. One mole of ANY (ideal)

47. ## Chemistry

Please could you tell me if I am going in the right direction. I am trying to write molecular formula for As2O3 I make molecular mass 197.8 gas density 17.8 to 3 sig figs 2.0 x density of gas at STP / density of hydrogen 17.8/0.0899 = 396 to 3 figs How do

48. ## Chemistry(Please check)

1) Which statement below is incorrect if any? a)when gas is at STP, the pressure of the gas is at 1.00 atm. b)when a gas is at STP, the temperature of the gas is 25 degrees celsius c)at STP the molar volume of a gas is 22.4L d)at STP the molar volume of

49. ## chemistry

Calculate the molar mass of a gas if 0.805g of this gas has a pressure of 4.00 bars at 305K in a 1 L. What is the gas density at this T and P, and what is the density at STP

50. ## College Chemistry

Using the molar volume (STP) or the ideal gas law equation, determine the molar mass,g/mole, of each of the following. A: 11.2g of a gas that has a volume of 1.50Lat STP? B: .0710g of a gas that has a volume 825ml at 1 atm

51. ## science

1. the molar mass of helium is 4.00 g/mol. calculate the volume of 1 mol of helium at STP (T = 273, P = 1 atm) what is the density of helium at STP? 2. the density of an ideal gas is 1.35 kg/m^3. if the temperature is Kelvin and the pressure are both

52. ## chemistry

i reallly need help with combining the gas laws. here are a few questions i am struggling with if anyone could please help! 1. A steel container holds 750.L of O2 gas at STP. a) how many moles of O2 does the container hold? b)how many grams of O2 does the

53. ## Chemistry

If the molar volume of an ideal gas is 22.4 L/mol, calculate the theoretical density of hydrogen gas at STP. Not sure what formula to use with this question. Thanks.

54. ## chem

hi can anyone help how do i determine the molecular formular of the oxide of arsenic in its in its gaseous state the answer i got was 17.8 gl -1 for the density, which law do i use is it boyles law or charles law thanks A mol of a gas occupies 22.4 L at

55. ## CHEMISTRY

5.0 g of aluminum reacts with 50.0 mL of 6.0 M hydrochloric acid to produce hydrogen gas. What is the volume of gas collected if the gas was collected at STP? 3. A 0.418 g sample of gas has a volume of 115 mL at 66.3 °C and 743 mmHg. What is the molar

56. ## AVC CHEMISTRY

5.0 g of aluminum reacts with 50.0 mL of 6.0 M hydrochloric acid to produce hydrogen gas. What is the volume of gas collected if the gas was collected at STP? 3. A 0.418 g sample of gas has a volume of 115 mL at 66.3 °C and 743 mmHg. What is the molar

57. ## Chemistry

Use molar gas volumes to convert the following gas volumes to amount in moles. A) 1.5 L of carbon monoxide gas at SATP B) 21.5 L of fluorine gas at STP

58. ## Chemistry

Halothane is a gas once used in anesthesia in hospitals. Its density is 0.857 g/L at 23 ºC and 80.2 torr. What would be its density at STP? What is its molar mass?

59. ## chemistry

1) 1.12 dm3 of a gas at STP is found to weigh 3.55g.Find molecular weight and vapour density of gas 2)5.6 dm3 of a gas at STP weighs 11g Find out its relative molecular mass & vapour density

60. ## Chemistry

Calculate the density a gas will have at STP if its molar mass is 41.8 g/mol.

61. ## Chemistry

1.05 g of an unknown gas at 47 °C and 1.05 atm is stored in a 2.25-L flask. Density of the gas= 0.47g/L What is the molar mass of the gas?

62. ## Chemistry 101

Are these correct? 1. A sample of gases contains three gases at the following pressures: 1.2 atm N2, 3.2 atm O2, and 0.56 atm Xe. What is the total pressure in the container? a. 5.0atm b. 1.4atm c. 2.2atm d. 1.0atm e. 1.7atm I am pretty sure it is A. Is

63. ## chem

1.45 g of an unknown gas at 53 °C and 1.10 atm is stored in a 1.85-L flask. What is the density of the gas what is the molar mass of the gas

64. ## Chemistry

During the electrolysis of Copper (ll) chloride solution, 3.2g of Copper was deposited at the cathode, calculate the volume of chlorine gas evolved at the anode at STP at the same time. Given cu=64, 1F=96500C. Molar volume of gas at STP=22.4/dm^3

65. ## chemistry

A volume of 0.285 L of a gas at STP weighs 0.537 g. Calculate the molar mass of the gas.

66. ## chemistry

If 600 mL of 0.283 M aqueous NaBr and 15.9 L of gaseous Cl2 measured at STP are reacted stoichiometrically according to the balanced equation, how many liters of gaseous Cl2 measured at STP remain? Round your answer to 3 significant figures. 2NaBr(aq) +

67. ## General Chemistry

If a 14.05g sample of a gas occupies 10.0L at STP, what is the molar mass of the gas at 125 degrees Celsius?

68. ## chem

Use the molar volume of a gas at STP to determine the volume (in L) occupied by 10.5g of neon at STP.

69. ## Chem

A gas has density of 1.977 g/dm3 at STP (a) what is its molecular mass? (b) what is its density at 77¢XC and 0.95 atm pressure? (c)If the gas is an oxide and has the formula XO2, what is the atomic mass of X

70. ## chemistry

What is the density (in grams per liter) of a gas at STP if 4.16 L of the gas in a bulb at 43.7 °C, and 737.9 mm Hg weighs 0.262 g?

71. ## chemistry

What is the density of UF6 (subscript) gas? What volume would 2.35 moles of this gas occupy? (Assume STP)

72. ## Chemistry

What is the density (in grams per liter) of a gas at STP if 1.97 L of the gas in a bulb at 23.8 °C, and 761.9 mm Hg weighs 0.371 g?

73. ## Chemistry

A hydrocarbon gas burned completely in O2 to give CO2 and H2O. It was found that 1volume of a hydrocarbon gas at STP produced 2volumes of CO2 and 3 volumes of steam at STP. What is the emperical formula of this gas? Please help me on how to work out the

74. ## chemistry

A gas mixture is composed of 4.3 grams of hydrogen (density at STP = 0.089 g/L) and 2.9 grams of helium (density at STP = 0.179 g/L). What is the percentage (v/v) helium in the mixture? If v/v = Volume of gas/total volume how would we find the volume of

75. ## chemistry

If 600 mL of 0.283 M aqueous NaBr and 15.9 L of gaseous Cl2 measured at STP are reacted stoichiometrically according to the balanced equation, how many liters of gaseous Cl2 measured at STP remain? Round your answer to 3 significant figures. 2NaBr(aq) +

76. ## ASAP CHEMISTRY

Determine the molar mass of the following: 0.94g of a gas that occupies 500L at 0 degrees celcius and 1.00 (STP). I keep getting 32g/mol

77. ## Chemistry

Chemical analysis of a gas shows that it contains one carbon atom for every one hydrogen atom. The densiry ofthis gas is 1.161 g/l at STP. What is the minimus oxygen volume needed at STP for the complete combustion of .500 mol of this gas?

78. ## Chem..

1. The c of a certain gas at 25˚C is 411 m/sec. Determine the molar mass of the gas. 2. The c of a sample of O2 is 575 m/sec. Determine the temperature of the gas.

79. ## Chemistry

Cyclohexane is composed of 85.6 % C and 14.4% H. when it is mixed in the proper ratio with oxygen, it can be used as an anesthetic. At 755 mmHg, and 25 degrees Celcius, it has a density of 2.05 g/L. what is the molar mass of cyclohexane and its molecular

80. ## college chemistry

A volume of 0.285 L of a gas at STP weighs 0.537 g. Calculate the molar mass of the gas (1)(0.285) = n(0.0821)(273). .0036 is this correct?

81. ## Physics Urgent!!!!!!

We consider an ideal gas of molar mass M = 16 g/mol at +10oC. What is the pressure of the gas if its density is 1.16 kg/m3 ?

82. ## Chemistry

An unknown gas at 25.1 ∘C and 1.00 atm has a molar mass of 16.04 g/mol. Assuming ideal behavior, what is the density of the gas?

83. ## chemistry

Consider a 50 L tank which hold 20 g of hydrogen gas, 20 g of carbon dioxide gas, and 20 g of krypton gas, at a total pressure of 600 KPa. 1. which gas has the largest partial pressure? 2. Which gas the smallest average speed? 3. What is the temperature of

84. ## Chemistry

What is the density of an unknown diatomic gas is 1.379 g/L at 825 torr and 35 degrees celsius. What is the molar mass and the identity of the gas?

85. ## chemistry

which of the following steps in the formation of KCI releases energy? A.K{solid} -> K{gas} B.K {GAS} -> K+ {GAS} + e- C.C1 {GAS} -> C1- {GAS} D.C1 {GAS} + e- -> C1 - {GAS} E. K+ {GAS} + C1- {GAS} -> KC1 {SOILD} A. A B. C C. B AND A D. D AND E I will be

86. ## Chemistry

Ive been trying to do my chemistry homework for the past few hours and I keep getting some of the questions wrong. These are the 2 questions i am having trouble with. 1. If 0.582 L of gaseous CO2 measured at STP dissolved in 920 mL of water is produced

87. ## chem 102

Fluorination of acetone, C3H6O (substitution of fluorine for H) produces a gaseous compound with the formula C3H6?xFxO. To identify this compound its molar mass was determined by measuring the gas density. The following data were obtained: Mass of gas,

88. ## Chemistry

1.) A convenient method of determining the volume of a container of irregular shape is to fill it with a liquid of known density and measure the mass. An empty Erlenmeyer flask marked "10 mL" weighs 26.3251 g. When filled with mercury, with density =

89. ## Chem

Which of the following are correct statements? (Could be as many as 4) 1. One mole of gas contains 22.4 representative particles 2. Standard pressure is 100 mm Hg 3. One mole of a gas must have the same volume as one mole of any other gas at STP 4. Gas

90. ## College Chemistry

HELP ME PLEASE! 1. Calculate the weight of 16.2L of pure SO2 gas at STP. (answer in grams) a.16.2 b.31.8 c.39.5 d.46.3 e.64.1 2.A volume of 725mL of a gas is collected at 105Celsius and 745torr. The gas weighs 1.93 grams. What is the Gas? a.Fe2 b.Ar c.Kr

91. ## chemistry

if 158g of a gas at stp occupies a volume of 50.00dm^3. what is the relative moat mass of the gas? (G M V at stp =22.4dm ^3 mold ).

92. ## chemistry

158g of a gas at stp occupies a volume of 50.00dm^3 ..what is the relative moat mass of the gas? (G M V at stp =22.4dm ^3 mold )

93. ## Chemistry

Please!!! its extremely urgent. i do not need answers, only how to do it A sample of nitrogen gas (N2) kept in a container of volume 10.1 L and at a temperature of 20.3°C exerts a pressure of 3.1 atm. Calculate the number of grams of gas present. Round to

94. ## science

An unknown gas occupies 14.6 L at STP and has a mass of 19.5 g. The unknown gas is either methane (CH4), carbon dioxide (CO2), nitrogen monoxide (NO), or sulfur dioxide (SO2). Determine the identity of the unknown gas.

95. ## chemistry

A volume of 0.285 L of a gas at STP weighs 0.537 g. Calculate the molar mass of the gas? PV=nRT where R = 0.0821. Therefore, (1)(0.285) = n(0.0821)(273). i got 275.9 is this correct?

96. ## chemistry

A gas tank holds 15.0 liters of gas at 37C and 342 kPa. What volume would this gas occupy at STP?

97. ## chemistry

A gas tank holds 15.0 liters of gas at 37C and 342 kPa. What volume would this gas occupy at STP?

98. ## Chemistry

at stp x ml n2 gas react completely with x ml o2 gas and form a gas a. what will be the molecular formula of a if volume is unchanged after reaction?

99. ## Chemistry

At STP, 461 mL of a gas have a mass of 1.88 g. What is the molar mass of the gas?

100. ## chem

Suppose a g is collected in 145 mL flask whef-tfle temperature of the gas is 23°C and the pressure of the gas is 785 mm Hg. Calculate the volume ofthe gas at STP.