Entonox is an anaesthetic gas containing 50% oxygen and 50% nitrous oxide    (N2O).  (i)  If 200 L of the gas mixture is compressed into a cylinder with a volume        of 2.20 L what is the total pressure in the cylinder, assuming the temperature remains unchanged?

[5] Sodium chlorate decomposes on heating to sodium chloride and oxygen gas. heat 2NACIO:(s) → 2NaCI(s) + 302(g) A 0.8765 g sample of impure sodium chlorate was heated until the production of oxygen gas ceased. The oxygen gas collected over water occupied 57.2 ml at a temperature of 22 °C and a pressure of 734 torr. Calculate the mass percent of NaCIO3 in the original sample. (At 22 °C the vapor pressure of water is 19.8 torr.)

For many purposes we can treat dimethyl ether C2H6O as an ideal gas at temperatures above its boiling point of −24.°C. Suppose the pressure on a 480.mL sample of dimethyl ether gas at 4.00°C is doubled. Is it possible to change the temperature of the dimethyl ether at the same time such that the volume of the gas doesn't change? If you answered yes, calculate the new temperature of the gas. Round your answer to the nearest °C.

Two separate flasks are each filled with a gas at 25.0°C; the valve between them is opened and the gases are allowed to mix. What would be the mole fraction of H 2 after mixing, if initially H 2 is in the first flask (Volume = 2.000 L) at 229.0 torr and HCl is in the second flask (Volume = 4.000 L) at 165.2 torr?

A mixture of solid calcium oxide,  CaO,  and solid barium oxide,  BaO,  weighing  3.145 g  is added to a  2.00 L  flask containing carbon dioxide,  CO2,  at  30 ∘C.  The  CaO  and  BaO  react completely with the carbon dioxide gas to form solid  CaCO3  and  BaCO3,  respectively. Calculate the moles of  CO2  consumed by the reaction if the initial pressure of  CO2  gas was  0.796 atm  and the final pressure of  CO2  gas is  0.394 atm. moles of  CO2: molWhat is the mass percentage of  CaO  in the solid mixture? mass percent  CaO: % What is the mass percentage of  BaO  in the solid mixture?mass percent  BaO: %

Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete combustion of butane is 2C4 H10 (9)+ 1302 (g)→8CO2 (g)+ 10H2O(1) At 1.00 atm and 23 °C, what is the volume of carbon dioxide formed by the combustion of 1.80 g of butane? Express your answer with the appropriate units. • View Available Hint(s) HẢ ? volume of CO2 Value Units

For an ideal gas, calculate the following quantities.(a) The pressure of the gas if 0.135 mol occupies 207 mL at 25°C. atm(b) The temperature (in kelvins) at which 0.0250 mol occupies 1.00 L at 0.583 atm. K(c) The number of moles in 3.00 L at -7°C and 725 torr. Remember 1atm = 760 torr. mol(d) The volume occupied by 4.72  10-3 mol at 40.°C and a pressure of 1.57 kPa. Remember 1 atm = 101.325 kPa

For many purposes we can treat dimethyl ether (C₂H₂O) as an ideal gas at temperatures above its boiling point of -24. °C. Suppose the pressure on a 410. mL sample of dimethyl ether gas at - 11.0°C is reduced to one-third its initial value. Is it possible to change the temperature of the dimethyl ether at the same time such that the volume of the gas doesn't change? If you answered yes, calculate the new temperature of the gas. Round your answer to the nearest °C. yes no °C x10 ×

1.  A 3.19-g mixture of solid CaO and solid ZnO is reacted in a 2.00-L container with CO2(g) at a pressure of 680 Torr at 25 °C to form the corresponding (solid)metal carbonates. The final pressure after the reaction is 260 Torr. What was the mass percent of CaO in the original mixture?

For many purposes we can treat propane (C₂H) as an ideal gas at temperatures above its boiling point of −42. °C. Suppose the temperature of a sample of propane gas is raised from 17.0 °C to 32.0 °C, and at the same time the pressure is decreased by 5.0%. Does the volume of the sample increase, decrease, or stay the same? If you said the volume increases or decreases, calculate the percentage change in the volume. Round your answer to the nearest percent. increase decrease stays the same % x10 X Ś ? 18 Ar