What is the mass in grams of 3.05x10^25 gold atoms

How would we measure the distance between the sun and Betelgeuse, explain why? Lightyear or AU

Why should hypothesis be testable?

A metal entrance door swings freely in the winter, but when the weather turns warm, the door sticks and seems too big for the doorframe. Using your knowledge of particle theory, explain what is happening.

How many atoms are present in a 1.0 mole sample of potassium perchlorate (KClO3) ?

What element does gold identity as

Which ions are spectator ions in the formation of a precipitate of agcl via combining aqueous solutions of cocl2 and agno3?

Marissa is learning about the unique properties of waves. She has learned that whenever the wavelength of a wave increases, the frequency of the wave decreases.

Which answer choice best explains why uranium-238 can be used in power plants to generate electricity? A) Nuclides of uranium-238 decay over time. They release large amounts of energy as their nuclei break apart.

Explain how you can use physical properties to compare substances.

How is this model useful?