Ahydrate of cocl2 has a mass of 17.40 g before heating. after heating, the mass of the anhydrous compound is found to be 10.27 g. explain how you would determine the formula of the hydrate and then write out the full name of the hydrate.

What effect does a decrease in temperature have on the overall rate of a chemical reaction? a decrease in temperature decreases . the reaction rate will

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

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.