Determine the difference in the speed of sound in hydrogen at 0 degrees celsius and in air at 30 degrees celsius. also indicate if is it faster or slower

What is a costume plot? why is it important to a film or theater production?

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s. what is the wavelength?

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.