A sample of water has a mass of 100.00 Calculate the amount of heat required to change
the sample from ice at 450°C to liquid water at
78.0°C. Use the chart to complete the multiple
steps required to arrive at the final answer. Type in your answers below using 3 digits.
Q1= KJ
Q2= KJ
Q3= KJ
q(tot)= KJ

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.