How many electrons are in the second energy level of an atom of each element?

A. Chlorine

B. Phosphorus

C. Potassium

If an atom gains or loses an electron it tends to become what?

A student performs a dehydration experiment and starts with 6.79 grams of hydrate. After heating the hydrate and allowing it to cool, the student weighs the anhydrous salt. The mass of the resulting anhydrous salt is 3.17 grams.

Name the noble gas, which is isoelectronic to a strontium ion.

What is the solubility product expression for Ag2CO3

The rate law for the reaction, 2no (g o2 (g? 2no2 (g, is found to be: rate of reaction = k [ no]2 [o2 ]2. the first, fast step is which best represents the rate equation for the rate-determining step of this reaction?

Defined the following convection

The study of matter and the changes that occurs in matter

Which would be a good source to find weather information about your town from last month? reference book about weather old copies of local newspapers a magazine with weather articles

What is the difference between a mixture, compound, element and pure substance

It takes 554 kJ to remove one mole of electrons from the atoms at the surface of a solid metal. How much energy does it take to remove a single electron from an atom at the surface of this solid metal?