Question

SOLVE THESE ASAP PLEASE
[gas laws chemistry class 9]

1. The volume of a certain mass of a gas was found to be 800 oc when pressure was 760 mm of Hg. If the pressure increases by 50%, find the new volume of the gas, assuming that temperature remains constant.(533-3 cc)

2. When filed with dry hydrogen gas at a pressure of 1 atmosphere, a weather balloon inflates to a volume of 175 litres. The balloon rises to a height of 2150 metres, where the atmospheric pressure is 0:800 atm. calculate the volume of the balloon at this height it the temperature is kept constant.(218-75 litres)

3. 800 cc of gas was collected at 650 mm pressure. At what pressure would the volume of the gas be reduced by 40% of its original volume, the temperature remaining constant(1083-33 mm)

4. 2 tires of a gas is enclosed in a vessel when the pressure is 760 mm. If the tempererture remains constant. Calculate the pressure when
i) the volume changes to 4 dm³
ii) the volume is increased by one and half times
(380 mm, 304 mm)

5. A cylinder of 20 litres capacity contains a gas at 100 atmospheres. How many flasks of 200cc capacity can be filled from it at 1 atm pressure, temperature remaining constant ?
(10000)

6. 88 cm³ of nitrogen is at a pressure of 770 mm of mercury. The pressure is then raised to 880 mm. Find by how much the volume would diminish, it the temperature remains constant.(11 cc)

7. A steel cylinder of internal volume 20 litres is filled with hydrogen at a pressure of 29 atmospheres, If the hydrogen is used to fill a balloon at 1:25 atmospheres internal pressure at the same temperat what volume will the gas occupy ?
(464 litres)

8. 5 dm³ of dry oxygen is allowed to expand to 10 dm³, when its pressure recorded is 700 mm of mercury.Find the initial pressure of a gas assuming temperature remains constant.
(1400 mm of Mercury)

9. At a constant temperature, a gas at a pressure of 1600 mm of Hg, occupies volume of 100 cc. If the volume is decreased by 50 %, find the new pressure.
(3200 mm of Mercury)

10. Calculate the volume of a gas at 1400 mm pressure if its volume at 700 mm pressure is 60 cc. keeping temperature constant
(30 cc)

Answer 1

it's too long Steel - Steel is homogeneous, because it is an alloy (a solid mixture of different metal components). It is a homogeneous mixture of iron, carbon, nickel and other elements.