Please help. Enter your answer in the provided box. Calculate the heat released when 73.0 g of steam at 126.0°C is converted to water at 40.0°C. Assume that the specific heat of water is 4.184 J/g • °C, the specific heat of steam is 1.99 J/g • °C, and = 40.79 kJ/mol for water.

Which best describes how johannes kepler developed his laws of planetary motion

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.

Amixture that has two or more substances that are spread out evenly is called a. compound b. heterogeneous c. substance d. homogeneous