When adding the measurements 42.1014 g + 190.5 g, the answer has significant figures. When dividing the measurements 400 g/32.2 cm3, the answer has significant figures.
Convert the given quantities. Give your answer with the appropriate number of significant figures.

Convert 6 g/cm3 to kg/m3.
Convert 50 °F to °C.
Convert 4.3 into meters.

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.