1 - What is the density of fluorine gas at STP
2 - 45 ML of SO2 is collected at STP. How many SO2 molecules are in the sample?
3 - What is the mass of 8.25 X 10 @2 SLC2 moleculesl?
4 - A sample of hydrated madnesium sulfate is %1.1% water. What is the hydrate formula?
Homework Answers
the density of flourine gas at stp is calculated by using the answer that is provided with the ratio of its molar mass to 22.4L which is 1.696
8. Hydrogen and oxygen gas combine to form water at STP. If you want 34.5 g...
8. Hydrogen and oxygen gas combine to form water at STP. If you want 34.5 g of water how many L of oxygen would you need? 9. If the pressure exerted by a gas at 13.0°C in a volume of 0.890 L is 4.52 atm, how many moles of the gas are present? 10. A sample of fluorine gas has a pressure of 6.85 mmHg at 10.0'C. What will its pressure be at 35.0*C if its volume remains constant? 11....
1.) A gas is found to have a density of 3.165 g/L at STP. What is...
1.) A gas is found to have a density of 3.165 g/L at STP. What is its molar mass? Which of the following gases is it most likely to be? Molar Mass: _________ a. NH3 b. O2 c. Cl2 d. SF6 2.) Calculate the pressure exerted by 5.05 moles of NCl3 gas in a 20.00-L container at -205°C for a real gas. (for xenon: a= 42.63 atm·L2/mol2 and b= 0.2450 L/mol) 3.) Which of the following is NOT true in...
Experiment 6 PRE-LABORATORY PROBLEMS NAME 1. Write a purpose statement and a summary of the procedure...
Experiment 6 PRE-LABORATORY PROBLEMS NAME 1. Write a purpose statement and a summary of the procedure to include special technique equipment, chemicals, and chemical reactions to be performed, an understanding of any calculations that are important to understanding the procedure. 2. Calculate the molar mass of copper (II) Sulfate pentahydrate, Cuso,5H.O. 3. Calculate the mass percent of water present in Copper(II) sulfate pentahydrate. 4. Define the term hydrate and anhydrous. S. A 2.000 gram sample of hydrated barium carbonate was...
A sample of carbon dioxide gas occupies 10,903 mL at STP. What is the mass of...
A sample of carbon dioxide gas occupies 10,903 mL at STP. What is the mass of the sample? QUESTION 2 A 598 mL sample of carbon dioxide gas, CO2, is collected at 1.72 atm and 36.7 °C. What is the mass of the carbon dioxide?
2. An unknown gas has a density of 0.714 g/L at STP. What is the molar...
2. An unknown gas has a density of 0.714 g/L at STP. What is the molar mass of the unknown gas? 3. What is the molar mass of a gas if 0.891 liters at 20.0°C and 1.20 atm weighs 3.17 g? 4. Acetylene gas, CH2, reacts with oxygen gas to produce gaseous carbon dioxide and liquid water. Write the balanced equation for this reaction. What volume of CO2 is produced at STP from 5.00 g 02? 5. What is the...
A gas has density of 1.977 g dm-3 at STP. (a) What is its molecular mass? (b) What is its density at 77C and 0.95 atm p...
A gas has density of 1.977 g dm-3 at STP. (a) What is its molecular mass? (b) What is its density at 77C and 0.95 atm pressure? (c) If the gas in an oxide and has the formula XO2, what is the atomic mass of X?
what does stp stand for? what teo values represent stp? what two gases will be collected...
what does stp stand for? what teo values represent stp?
what two gases will be collected in the gas collection
tube?
Name: Section Pre-Laboratory assignment 1. What does STP stand for? What two values represent STP? 2. What two gases will be collected in the gas collection tube? 3. A volume of 30.0 mL of nitrogen gas was collected over water at 24.0°C and 0.98 atm. The vapor pressure of water at this temperature is 0.03 atm. a. What is...
The volume of 1 mole of any gas at STP is 22.4 liters. The density of...
The volume of 1 mole of any gas at STP is 22.4 liters. The density of liquid nitrogen at –196C is 0.808 g/mL. a. Find the volume of 1 mole of liquid nitrogen b. What % of the volume of gaseous nitrogen is used by the molecules themselves? Compare the volume of 1 mole of liquid N2 calculated in part A with the volume of gaseous N2 at STP.
3. How much KCIO3 must be decomposed to provide 400 mL of oxygen gas collected at...
3. How much KCIO3 must be decomposed to provide 400 mL of oxygen gas collected at STP? KCIO3 (5) ► KCI (s) +__02 (8) a 4. The volume of a sample of gas that weighs 0.324 g is 295. mL at 26.°C and 732. torr. Calculate the density of the gas at STP. (732 foor) (2 asmo) ) = (10.m) .: 224 21:259/ 324. dore PVPV TTTTIIIIIIIIIIIIII 1.25g/h 5. What is the molar mass of a gas if 0.528 g...
I really need help understanding the second question? 2.) calculate the percent mass in your hydrate....
I really need help understanding the second question?
2.) calculate the percent mass in your hydrate. If the
copper(ii) sulfate hydrate should contain 36.08% by mass of water,
what is the % error of your experimental result?
4. Decant about 1/4 of the solution into another clean test tube. In the fume hood, carefully add I drop of concentrated ammonium hydroxide (aqueous ammonia) into the test tube and gently swirl. KEEP YOUR NOSE AWAY FROM THE AQUEOUS AMMONIA FUMES! Record...
8. Hydrogen and oxygen gas combine to form water at STP. If you want 34.5 g of water how many L of oxygen would you need? 9. If the pressure exerted by a gas at 13.0°C in a volume of 0.890 L is 4.52 atm, how many moles of the gas are present? 10. A sample of fluorine gas has a pressure of 6.85 mmHg at 10.0'C. What will its pressure be at 35.0*C if its volume remains constant? 11....
Experiment 6 PRE-LABORATORY PROBLEMS NAME 1. Write a purpose statement and a summary of the procedure to include special technique equipment, chemicals, and chemical reactions to be performed, an understanding of any calculations that are important to understanding the procedure. 2. Calculate the molar mass of copper (II) Sulfate pentahydrate, Cuso,5H.O. 3. Calculate the mass percent of water present in Copper(II) sulfate pentahydrate. 4. Define the term hydrate and anhydrous. S. A 2.000 gram sample of hydrated barium carbonate was...
A sample of carbon dioxide gas occupies 10,903 mL at STP. What is the mass of the sample? QUESTION 2 A 598 mL sample of carbon dioxide gas, CO2, is collected at 1.72 atm and 36.7 °C. What is the mass of the carbon dioxide?
2. An unknown gas has a density of 0.714 g/L at STP. What is the molar mass of the unknown gas? 3. What is the molar mass of a gas if 0.891 liters at 20.0°C and 1.20 atm weighs 3.17 g? 4. Acetylene gas, CH2, reacts with oxygen gas to produce gaseous carbon dioxide and liquid water. Write the balanced equation for this reaction. What volume of CO2 is produced at STP from 5.00 g 02? 5. What is the...
what does stp stand for? what teo values represent stp?
what two gases will be collected in the gas collection
tube?
Name: Section Pre-Laboratory assignment 1. What does STP stand for? What two values represent STP? 2. What two gases will be collected in the gas collection tube? 3. A volume of 30.0 mL of nitrogen gas was collected over water at 24.0°C and 0.98 atm. The vapor pressure of water at this temperature is 0.03 atm. a. What is...
3. How much KCIO3 must be decomposed to provide 400 mL of oxygen gas collected at STP? KCIO3 (5) ► KCI (s) +__02 (8) a 4. The volume of a sample of gas that weighs 0.324 g is 295. mL at 26.°C and 732. torr. Calculate the density of the gas at STP. (732 foor) (2 asmo) ) = (10.m) .: 224 21:259/ 324. dore PVPV TTTTIIIIIIIIIIIIII 1.25g/h 5. What is the molar mass of a gas if 0.528 g...
I really need help understanding the second question?
2.) calculate the percent mass in your hydrate. If the
copper(ii) sulfate hydrate should contain 36.08% by mass of water,
what is the % error of your experimental result?
4. Decant about 1/4 of the solution into another clean test tube. In the fume hood, carefully add I drop of concentrated ammonium hydroxide (aqueous ammonia) into the test tube and gently swirl. KEEP YOUR NOSE AWAY FROM THE AQUEOUS AMMONIA FUMES! Record...
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