Which subatomic particle of an atom never changes?

For the reaction 2H₂ (g) + O₂ (g) → 2H₂O (g), how many liters of water can be made from 7.5 L of oxygen gas and an excess of hydrogen at STP?

A loose, icy body with a long, narrow orbit is?

A _ is a possible explanation for a problem using what you know and what you observe a-conclusion b-thesis c-theory d - hypothesis

Which choices indicate a chemical change? _ (Select all that apply.) _ two liquids mix and release an odor two colors mix to make a new color liquid turns to gas in the form of bubbles when boiling two liquids form a precipitate They all seem

Aspirin is the analgesic acetylsalicylic acid C9H8O4. What is the coefficient of oxygen in the balanced equation for the combustion of solid acetylsalicylic acid to carbon dioxide and liquid water? a. 3. b. 2. c. 1. d. 4. e. 8. f. 7. g. 9. h. 10. i.

3 - Which process use to convert heavier hydrocarbons into lighter (gasoline) in the absence of oxygen and in the presence of catalyst? A - Fractional distillation B - Melting C - Cracking D - Boiling

In a solution, the solute is the substance present in the greatest amount. In a solution, the solute is the substance present in the greatest amount. A. True B. False

A simple sugar (C6H12O6) occurring in plant and animal tissues

Identify any solutes and solvents present in a mixture of 0.05 mol ethanol, 1 liter water, and 0.2 g hydrogen peroxide.

Suppose the mass of a dog is 90 pounds. If 1 kilogram is equal to 2.2 pounds, what is the mass of the dog in kilograms?