A 7.53 g sample of a Cu-Zn alloy reacts with HCl acid to produce hydrogen gas. If the hydrogen gas has a volume of 1.31 L at 22 "C and 719 mmHg, what is the percent of Zn in the alloy? Be sure your answer has the correct number of significant digits.

Q: Calculate the final temperature of a sample of gas initially at 22.3 0C that is expanding from 2.335…

A: As per the ideal gas law, PV = nRT  where P = pressure  V = volume  n = moles  R = gas constant  T =…

Q: A certain number of moles of gas is contained in a 29.2 liter flask at 15.6°C. When the temperature…

A: According to Charles law, when number of moles (composition) and pressure is kept constant then…

Q: A car tire is measured to have a volume of 32.4 L and pressure of 1,720 mmHg at 7:00 am. The…

A: V1 = 32.4 L P1 = 1720 mmHg V2 = 33.1 L P2 = 1762 mmHg  T2 = 303.4 K

Q: A sample of gas contains 0.1200 mol of N2(g) and 0.3600 mol of H2(g) and occupies a volume of 28.7…

A: Answer: 14.35 L is the volume of the sample after the reaction take place.    Given, Initially:…

Q: A sample of a gas is in a sealed container. The pressure of the gas is 345 torr , and the…

A: The objective of this question is to find the new pressure of the gas inside the container when the…

Q: 3. Calculate the volume of 4.7009 x 1023 molecules of NH3 gas trapped in a container at a pressure…

A:

Q: A gas has a pressure of 900.0 millibars at a temperature of 28.0 °C. If the volume is unchanged but…

A: Step 1: Step 2: Step 3: Step 4:

Q: A gas sample with a volume of 5.3 L has a pressure of 725 mm Hg at 22 degrees celsius. What is the…

A: The objective of this question is to find the pressure of a gas sample when the temperature changes,…

Q: A rigid cylinder with movable piston contains 50.0 liters of Hydrogen gas at 30 degrees celsius with…

A: The combined gas law expresses the relationship between the pressure, volume, and absolute…

Q: A weather balloon is inflated to a volume of 28.5 L at a pressure of 748 mm Hg and a temperature of…

A: According to ideal gas law, PV = nRT where P = pressure V = volume n = moles R = gas constant T =…

Q: If you pack a bag of potato chips for a snack on a plane ride, the bag appears to have inflated when…

A: Given :-  Initial pressure = 760 mm Hg  Initial volume = 340 mL  Final pressure = 670 mm Hg  To…

Q: Consider the apparatus shown in the figure. The container on the left is 22.4 L in volume and…

A: The concept used in this question is from  chemical thermodynamics of physical  chemistry.  Here we…

Q: You have 354 mL of chlorine trifluoride gas at 762 mmHg and 48°C. What is the mass (in g) of the…

A: 1 atm is equal to 760 mmHg

Q: A helium-filled balloon has a volume of 1 ?3 . As it rises in the earth's atmosphere, its volume…

A: Given P1 = 1 atm V1 = 1 m3 T1 = 20°C P2 = 0.1 atm V2 = ? T2 = -40°C

Q: A sample of helium at 20 °C occupies a volume of 3.09 L at a pressure of 8.12 atm.. What volume does…

A: Given, Initially  Pressure (P1) = 8.12 atm Volume (V1) = 3.09 L Later Pressure (P2) = 7.48 atm…

Q: Gases exert a measurable pressure (P) on the walls of their container. The SI unit for pressure is…

A: The relationship between pressure is the pascal  and millimeters of mercury is 101325 Pa = 760 mmHg…

Q: A sample of helium gas has a volume of 6.30 L at a pressure of 825 mmHg and a temperature of 21∘C.…

A:

Q: The volume of a sample of oxygen is 4.5 L when the preassure is 4.5 atm and the temperature is 88.4…

A: By using combined gas law equation we can calculate the temperature

Q: A 50.0-L gas cylinder contains 3.80 g H, at 25°C. What is the pressure of the gas? Enter your answer…

A: Given, Volume = 50 L, temperature = 25℃ = 298 K, Mass of H2 = 3.8 g

Q: A sample of gas has a volume of 250 mL at 0.300 atm. What would be the volume (mL) if the pressure…

A: The initial volume of the gas is .The initial pressure of the gas is .The final pressure of the gas…

Q: A sample of gas in a balloon has an initial temperature of 21 ∘C and a volume of 1370 L . If the…

A: Initial Temperature (T1) = 294 Final temperature  (T2) = 332 Initial volume (V1)  =   1370 L Final…

Q: Ammonia gas is synthesized according to the equation shown below. what is the maximum amount of NH3,…

A:

Q: If 31.0 gg of oxygen gas has a temperature of -44.2 ∘C∘C and a pressure of 581 mmHgmmHg , what is…

A:

Q: A sample of an unknown compound is vaporized at 170. °C. The gas produced has a volume of 1740. mL…

A: Pressure = P = 1 atm  Volume = V = 174 mL = 0.174 L  Temperature = T = 170°C =(170+273) K = 443 K…

Q: Part A:  A sample of gas in a balloon has an initial temperature of 33 ∘C and a volume of 1880 L.…

A: A) Given: Initial temperature of gas = 33 oC Initial volume = 1880 L And final temperature = 77 oC

Q: A mixture of helium and neon gases is collected over water at 0 oC and 745 mmHg. If the partial…

A: NOTE: Since the vapor pressure of water is given at 28.0 oC. Hence I'm assuming the temperature of…

Q: The volume of a sample of hydrogen gas was decreased from 13.82 L to 7.11 L at constant temperature.…

A: Given,initial volume of hydrogen gas = 13.82 Lfinal volume of hydrogen gas = 7.11 LFinal pressure…

Q: When it became too hot to stay outside during a summer birthday party, the party was moved inside to…

A:

Q: A sample of gas in a balloon has an initial temperature of 5 ∘C and a volume of 1600 L . If the…

A: Given : Initial temperature = 5oC=5 + 273= 278K Final temperature = 59oC= 59 + 273= 302K Initial…

Q: Consider the relationship between density, pressure, and temperature.  If the temperature is held…

A: Answer: To solve this question density form of ideal gas equation will be used which is shown below:…

Q: A 6.63 g sample of a Cu-Zn alloy reacts with HCl acid to produce hydrogen gas. If the hydrogen gas…

A: We have to calculate the percentage of Zn in the alloy

Q: the Suppose a student collects 32.4 mL of O₂ gas over water at 23.4 °C. If determined to be 75.96 cm…

A:

Q: A weather balloon is inflated to a volume of 28.5 L at a pressure of 748 mm Hg and a temperature of…

A: According to ideal gas law, PV = nRT where P = pressure V = volume n = moles R = gas constant T =…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.