What volume (measured at STP) will 3.75 grams of helium gas occupy?

What type of compound is CH3-O-CH2-CH2-CH3?

Two students measure the time it takes for a race to finish. One student measured 75.5 seconds. The other student measures 1 minute and 15 seconds. Both students are correct. Why?

A new substance is formed when the?

What happens to the particles on a dissolving process?

Suppose you were standing on scale in an elevator in free fall. What would the scale read?

How many valence electrons are in atom of sulfur?

My sister needs this answered! Donald is creating an experiment to determine if fertilizer affects plant color. He makes this statement: "If each plant receives a different amount of fertilizer, then the plant's color intensity will change.

What would happen to life if earth were in a different location within the solar system

Substance that undergoes a change in a chemical reaction is a. a product c. a reactant. b. a chemical. d. an enzyme.

List the number of protons, neutrons, and electrons in Iodine-127. (atomic number is 53)