Homework Answers
The volume of H2 = 243mL = 0.243 L
Pressure of H2 gas collected = 745 mm
Pressure of H2 dry gas = P of H2 collected - vapor pressure of water = 745- 23.78 = 721.22 mm
= 721.22mm /760mm/atm
Temperature = 25C = 25+273= 298 K
Using the ideal gas equation
PV = nRT
or PV = (mass/molar mass) RT
(721.22/760)atm x 0.243L = (mass/ 2g/mol) x 0.0821L.atm/mol.K x 298K
Thus mass of H2 formed = 0.0188 g
Add Answer to:
INSTRUCTION: Give your answers in the space provided. You MUST show your work to get credit...
need all questions answered please !!!!!! 1. The following reaction is used to generate hydrogen gas...
need all questions answered please !!!!!!
1. The following reaction is used to generate hydrogen gas in the laboratory: Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g). If 243 mL of hydrogen gas is collected at 25°C and has a total pressure of 745 mm Hg, calculate the mass of hydrogen produced. Vapor pressure of water at 25°C is 23.78 mm Hg. (2 Pts.) 2. Sulfurous acid can form water and sulfur dioxide upon heating. How much sulfur dioxide is formed...
6. The following reaction is used to generate hydrogen gas in the laboratory. If 85.7 ml...
6. The following reaction is used to generate hydrogen gas in the laboratory. If 85.7 ml of gas is collected at 21°C and has a total pressure of 767 mm Hg, what mass of hydrogen (in grams) is produced? A possibly useful table of water vapor pressures is provided below. Mg(s) + 2 HCl(aq) - MgCl2(aq) + H2(g) I(C) P (mm Hg) 20 17.55 25 23.78 30 31.86
Section: Due Date: 10/31/19 INSTRUCTION: Give your answers in the space provided. You MUST show your...
Section: Due Date: 10/31/19 INSTRUCTION: Give your answers in the space provided. You MUST show your calculations to get credit. ++++++ ++++++++++++++++++++++++++++++ +++++++++++++++++ 1. Calculate the mass (in g) of AgCl that can be formed from the reaction of 85.0 mL of 0.110 M MgCl, solution with 65.0 mL of a 0.150 M AgC,H,O, solution. (2 Pts.) MgCl2(aq) + AgC,H,O,(aq) AgCl(s) + Mg(C,H,02), (aq) 2. Calculate the molarity of a solution prepared by dissolving 2.500 g of Na2CO, in water...
please show work How many grams of HCl, are needed to produce 125 ml of carbon...
please show work
How many grams of HCl, are needed to produce 125 ml of carbon dioxide gas at STP in the following reaction? CaCO3(s) + 2 HCl(aq) - -> CaCl(aq) + CO2(g) + H20(1) In a reaction similar to this laboratory experiment, 0.625 g of aluminum metal was completely consumed and the H, gas collected over water at 55.0°C and atmospheric pressure of 759 mm Hg. What was the volume of H, gas produced? (Be sure to correct H2...
zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following equation:...
zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following equation: Zn(s) + 2HCl(aq)ZnCl2(aq) + H2(g) The product gas, H2, is collected over water at a temperature of 20 °C and a pressure of 745 mm Hg. If the wet H2 gas formed occupies a volume of 9.32 L, the number of moles of Zn reacted was __mol. The vapor pressure of water is 17.5 mm Hg at 20 °C.
Suppose you are performing a gas-producing reaction to experimentally determine the molar volume of the gas...
Suppose you are performing a gas-producing reaction to experimentally determine the molar volume of the gas at STP. Mg(s) + 2 HCl(aq) + MgCl2 (aq) + H2(g) A sample of 0.0883 g of Mg, which has a molar mass of 24.31 g/mol, produces 82.5 mL of H2 gas. The gas is collected over water at an atmospheric pressure of 774.5 mm Hg at 22 °C, at which the vapor pressure of water is 19.8 mm Hg. What is the experimental...
A-D A student performed an experiment in which they collected hydrogen gas from the reaction of...
A-D
A student performed an experiment in which they collected hydrogen gas from the reaction of magnesium with hydrochloric acid using the same apparatus that you will be using in today's lab. The reaction is: Mg(s) + 2 HCl(aq) → H2(g) + MgCl2 (aq) The data they collected are shown below: Mass of Mg Volume of HCI Volume of H2 collected Temperature of H2 collected Barometric pressure 0.100 g 10 mL 57.5 mL 22 °C 29.94 in Hg a. Barometric...
In a water displacement experiment, a student used a reaction of solid Zn with hydrochloric acid...
In a water displacement experiment, a student used a reaction of solid Zn with hydrochloric acid (Zns + 2HCl(aq) = ZnCl2(aq) + H2(g)) and collected 1.72 L of gas at 745.72 mmHg and 25◦C. 1. How much hydrogen gas (in moles) was produced? At 25◦C, vapor pressure of water is 23.78 mmHg. 2. How much Zn, by mass, was used in this reaction?
Calculate the gas constant, R O Convert your measured temperature to Kelvin and record it in...
Calculate the gas constant, R O Convert your measured temperature to Kelvin and record it in your Notebook. Using the table found under "Resources," determine the vapor pressure of water at your measured temperature. Record the water vapor pressure in your Notebook. Calculate the pressure of hydrogen gas produced from your reaction. This will be the difference between the atmospheric pressure and the vapor pressure of water at your measured temperature. Record the hydrogen gas pressure in your Notebook. For...
Magnesium metal reacts with hydrochloric acid to give hydrogen gas. Mg + 2 HCl → MgCl2...
Magnesium metal reacts with hydrochloric acid to give hydrogen gas. Mg + 2 HCl → MgCl2 + H2 Use the following reaction information to answer the subsequent questions. Show all of your work. 92 mm Length of Magnesium ribbon: Barometric Pressure: 762.9 mmHg Water Temperature: 29 °C Initial Gas Volume: 0.00 mL Final Gas Volume: 67.35 mL 0.7559 Mass = Length (in mm) x (1000 mm) 1. Magnesium is usually found in the laboratory as a ribbon strip. Find the...
need all questions answered please !!!!!!
1. The following reaction is used to generate hydrogen gas in the laboratory: Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g). If 243 mL of hydrogen gas is collected at 25°C and has a total pressure of 745 mm Hg, calculate the mass of hydrogen produced. Vapor pressure of water at 25°C is 23.78 mm Hg. (2 Pts.) 2. Sulfurous acid can form water and sulfur dioxide upon heating. How much sulfur dioxide is formed...
6. The following reaction is used to generate hydrogen gas in the laboratory. If 85.7 ml of gas is collected at 21°C and has a total pressure of 767 mm Hg, what mass of hydrogen (in grams) is produced? A possibly useful table of water vapor pressures is provided below. Mg(s) + 2 HCl(aq) - MgCl2(aq) + H2(g) I(C) P (mm Hg) 20 17.55 25 23.78 30 31.86
Section: Due Date: 10/31/19 INSTRUCTION: Give your answers in the space provided. You MUST show your calculations to get credit. ++++++ ++++++++++++++++++++++++++++++ +++++++++++++++++ 1. Calculate the mass (in g) of AgCl that can be formed from the reaction of 85.0 mL of 0.110 M MgCl, solution with 65.0 mL of a 0.150 M AgC,H,O, solution. (2 Pts.) MgCl2(aq) + AgC,H,O,(aq) AgCl(s) + Mg(C,H,02), (aq) 2. Calculate the molarity of a solution prepared by dissolving 2.500 g of Na2CO, in water...
please show work
How many grams of HCl, are needed to produce 125 ml of carbon dioxide gas at STP in the following reaction? CaCO3(s) + 2 HCl(aq) - -> CaCl(aq) + CO2(g) + H20(1) In a reaction similar to this laboratory experiment, 0.625 g of aluminum metal was completely consumed and the H, gas collected over water at 55.0°C and atmospheric pressure of 759 mm Hg. What was the volume of H, gas produced? (Be sure to correct H2...
Suppose you are performing a gas-producing reaction to experimentally determine the molar volume of the gas at STP. Mg(s) + 2 HCl(aq) + MgCl2 (aq) + H2(g) A sample of 0.0883 g of Mg, which has a molar mass of 24.31 g/mol, produces 82.5 mL of H2 gas. The gas is collected over water at an atmospheric pressure of 774.5 mm Hg at 22 °C, at which the vapor pressure of water is 19.8 mm Hg. What is the experimental...
A-D
A student performed an experiment in which they collected hydrogen gas from the reaction of magnesium with hydrochloric acid using the same apparatus that you will be using in today's lab. The reaction is: Mg(s) + 2 HCl(aq) → H2(g) + MgCl2 (aq) The data they collected are shown below: Mass of Mg Volume of HCI Volume of H2 collected Temperature of H2 collected Barometric pressure 0.100 g 10 mL 57.5 mL 22 °C 29.94 in Hg a. Barometric...
Calculate the gas constant, R O Convert your measured temperature to Kelvin and record it in your Notebook. Using the table found under "Resources," determine the vapor pressure of water at your measured temperature. Record the water vapor pressure in your Notebook. Calculate the pressure of hydrogen gas produced from your reaction. This will be the difference between the atmospheric pressure and the vapor pressure of water at your measured temperature. Record the hydrogen gas pressure in your Notebook. For...
Magnesium metal reacts with hydrochloric acid to give hydrogen gas. Mg + 2 HCl → MgCl2 + H2 Use the following reaction information to answer the subsequent questions. Show all of your work. 92 mm Length of Magnesium ribbon: Barometric Pressure: 762.9 mmHg Water Temperature: 29 °C Initial Gas Volume: 0.00 mL Final Gas Volume: 67.35 mL 0.7559 Mass = Length (in mm) x (1000 mm) 1. Magnesium is usually found in the laboratory as a ribbon strip. Find the...
Most questions answered within 3 hours.
-
Assume one of your finals has 50 questions on it, and
lucky for you, it's all...
asked 1 minute from now -
Rice Products in Bangladesh
Business behavior is derived in large part from the basic cultural
environment...
asked 1 hour ago -
The following base sequence is found for a mRNA fragment from
wild-type E. coli: 5'- UAUCAGUAGAUAAUGUAACC-3'...
asked 1 hour ago -
For this exercise, round all regression parameters to three
decimal places.
One of the two tables...
asked 1 hour ago -
What is the 5% level of significance for mean = 3.60, standard
deviation = 0.94, and...
asked 2 hours ago -
Prior to beginning work on this discussion, please read the
article by Hayley Peterson, 15 Companies...
asked 2 hours ago -
Which pair of aqueous solutions, when mixed, will form a
precipitate?
A) NaNO3 and AgC2H3O2
B)...
asked 2 hours ago -
1-Write an algorithm to get two numbers from the user (as
inputs) and calculate the sum...
asked 6 hours ago -
Define white-collar crime. What is the difference between
offender and offense-based definitions of white-collar crime? What...
asked 6 hours ago -
Consider a reaction which is 1st order with respect to A and 1st
order with respect...
asked 7 hours ago -
c++
The length of the hypotenuse of a right-angled triangle is the
square root of the...
asked 7 hours ago -
When a metal rod is heated, not only its resistance but also its
length and cross‐sectional...
asked 7 hours ago