How many valence electrons are there in silicon, which has an atomic number of 14?

a. 2

b. 4

c. 6

d. 8

How many moles of H2 are needed to react with 5.6 mol of O2?

When NEM is added to a purified solution of creatine kinase, Cys 278 is alkylated, but no other Cys residues in the protein are modified. What can you infer about the Cys 278 residue based on this observation

Hardness, texture, flammability, and color are all examples of properties of

Discuss the advantages and disadvantages of using wind power for large-scale energy production.

Where does filtration of the blood occur within the kidneys?

Roger believes that he is following a healthy regime by taking lots of vitamin E everyday. What property of vitamin E makes Roger's practice potentially unhealthy?

A 68-kg man whose average body temperature is 39°C drinks 1 L of cold water at 3°C in an effort to cool down. Taking the average specific heat of the human body to be 3.

As longitudional waves travel, particles in the medium are pushed together and then pulled apart. we call this

Which organelle would generate energy to power cellular activites

Which of the following occurs as water vapor cools in the atmosphere? condensation transpiration precipitation evaporation