If element X has 25 protons, how many electrons does it have?

A radioactive isotope of the element potassium decays to produce argon. If the ratio of the number of argon to potassium atoms is found to be 7:1, how many half-lives have occurred since the sample of radioactive potassium started to decay

What would happen to a vacant lot in your community if it were to left alone for the next 25 years

What are sodium salts of long-chain fatty acids called? A) lecithins B) Soaps C) micelles D) synthetic detergent

Why is the current model of the atom considered to be most accurate

The oceanic crust is made primarily from this type of rock.

Express your answer using two significant figures. 2.7 cm3 = m3 2.0 mm3 = m3

Liquid petrol does not ignite spontaneously in air

What conditions are important in determining if it will rain or snow?

What is the gram formula mass of Na2CO3 multiplied by 10H2O

Why are elements organized in the same group or families