Throughout the 1800s, chemists tried many systems for organizing the elements. Which information about the elements helped them the most? A. chemical properties and atomic number B. the number of elements and atomic mass C. chemical properties and atomic mass D. electron configurations and chemical properties

Hannah is writing a report on how albedo affects the global climate. she’s proofreading her passage for any factual errors. which sentence must hannah correct before submitting her report? earth receives energy from the sun. this energy drives many of the processes on earth, including its climate. some part of this energy is reflected by earth’s surface. we use the term albedo to describe the reflected energy. albedo of an object is the ratio of the reflected radiation to the total radiation reaching the object. a value of 0 means no energy is absorbed by the object, whereas a value of 1 means that all of the energy is absorbed. in this way, the albedo of an object can influence earth’s atmospheric temperature.

Which position represents spring in the southern hemisphere? a) b) c) d)

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5