Why was Aristarchus's model not accepted?

Lead had been used in plumbing and other products since ancient times. How have chemists contributed to our understanding of lead today? A. They have shown how lead can build up and cause damage in the human body. B.

Which states of matter have no definite volume?

How many moles are in 43.9 L of oxygen

Where does carbon-14 originate from and what are the uses of carbon-14?

What term best describes the type of reaction that happens when a molecule or compund reacts with another molecule or compound, producing two new molecules or compounds A) an isolation reaction B) a single Combustion reaction C) a single replacement

Which statement best explains the plateau seen in the cooling curve of naphthalene? A) The energy of the system decreases B) The temperature of the system increases C) the temperature of the system decreases D) The energy of the system remains

A group of organisms that breed and produce offspring that can breed. A. Species B. ecosystem C. Biodiversity

The surface of the earth is divided into more than 50 large plates

What is the net ionic equation for AgNO3 (aq) + K2SO3 (aq) ?

Oil and water a combined to make salad dressing. Physical Change? Chemical Change? Both?