A1960 silver quarter is found to have a mass of 6.25 grams. on a given day, the value of silver is $17.32 per ounce. how much is this coin worth if the coin is 92% silver?

Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.

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?