En un recipiente de 10 L de capacidad se colocan 0.35 moles de hidrógeno, 21 g de nitrógeno y 22.4 L de dióxido de carbono medidos en condiciones ideales.
Si ponemos dicha mezcla a 25°C, determinar la presión total, las presiones

parciales y las fracciones molares de dichos gases.​

Joe shines white light into a bowl half full of water at an angle of incident of 27.5°. calculate the angle of refraction in the water given the indices of refraction for air and water are 1.00 and 1.36, respectively.

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?