An atom of silicon has a mass number of 28 and an atomic number of 14 how many electrons does this atom have

What element is 4s²3d5?

How to convert 0.000984 into scientific notation?

Shaun needs to produce 1000 milliliters of 36% alcohol solution. At his disposal he has 20% alcohol solution and 40% alcohol solution. How much of each does he need in order to produce his desired solution?

A. it is physical change

Hydrogen bonding is strongest between molecules of

What is the mass of 9.92*10^24 molecules of methanol?

How many moles of h2so4 are required to react with 6.80 miles of al2o3

Which explanation best describes a wave? A. a disturbance that travels through a medium with a transfer of energy and matter B. a disturbance that travels through a medium without a transfer of energy and matter C.

The requirements for one type of atom to substitute for another in a solid solution are:

How could you separate items that are different densities? explain