A student is studying asbestos, a mineral that causes cancer in humans. One of the components of asbestos is silicon, a somewhat reactive element, that is the second most abundant element found in the Earth’s crust. Which characteristic of silicon is most closely related to its chemical reactivity? The atomic mass of silicon, which is 28.085 amu

The density of silicon, which is 2.33 g/cm3

The 4 valence electrons in each atom of silicon

The 14 protons in each atom of silico

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 part of a feedback mechanism is able to monitor the conditions outside of cells and usually uses nerve cells to relay this information to an intergrating center

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al