Two characteristics of dynamic equilibrium.

A certain signal produces 2.56x10^9 waves per hour (2560000000 waves/h). What is the frequency of this signal in Hertz?

Petrochemicals are used in some cosmetics. True or False

A scientist is using a microscope to observe a type of bacteria. Which two structures would the scientist most likely see?

Explain why movies are wrong about sound in space.

Which scenarios may be explained by the facts on the left? Check all that apply. There is more dissolved oxygen in colder waters than in warm water. There is less dissolved oxygen in colder waters than in warm water.

A double replacement reaction is a reaction in which one element replaces a similar element within a compound True or false

Why would gamma radiation be used in diagnostic imaging rather than alpha or beta radiation?

1.) Rust forms when Fe, O₂, and H₂O react in the balanced equation below; 2Fe (s) + O₂ (g) + 2H₂O (l) - -> 2Fe (OH) ₂ (s) In an experiment 10.0g of Fe is allowed to react with 4.00g of O₂ A.) Which of these reactants is the limiting reagent? B.

Choose the answer that takes place when a liquid absorbs heat energy without increasing its temperature. A.) the pressure increases B.) it vaporizes C.) it solidifies D.) the volume decreases

What are small round structures in the cell that breaks down large food particles into smaller ones