Which actions are evidence that a chemical reaction has occurred? Check all that apply. a change in color the formation of a precipitate a clear liquid becoming cloudy a change in shape the formation of bubbles the formation of smoke

How many ohms of resistance are in a 120 volt hair dryer that draws 7.6 amps of current

The Moon has too little iron, Mercury too much. How can both of these anomalies be the result of giant impacts? Explain how the same process can yield such apparently contradictory results.

Find the charge stored when 5.50 v is applied to an 8.00-pf capacitor

How can we describe an atom

How does the temperature of the Earth's mantle compare to the other layers of the Earth? A) The mantle is hotter than the core. B) The mantle is hotter than the crust. C) The mantle is the same temperature as the core.

What is the displacement and distance if I walk 8 blocks north, 9 blocks west and 10 blocks south

What investigations provide large amounts of information about a wide range of variables.

Why would Sodium (Na) and Chlorine (CI) want to form a lonic Bond? -to achieve a full inner valence shell -to achieve a equal amount of protons & electrons in their nucleus -to achieve an stable amount of protons & neutrons in their nucleus -to

A digital thermometer reads 15 degrees Celsius, what is the uncertainty?

Determine the magnitude of the effective value of g⃗ at a latitude of 60 ∘ on the earth. assume the earth is a rotating sphere.