What is similar about all the valence electrons for all the elements un the p-block?

Diatomic n2 can react with diatomic h2 to form ammonia (nh3). the balanced chemical equation is: n2 + 3 h2? 2 nh3 if 6 moles of h2 totally reacted with more than enough n2, how many moles of ammonia would be expected to form?

Name a pair of elements that would likely combine to form a salt and write the formula.

What is the molarity of a solution that contains 2.35 g of nh3 in 0.0500 l of solution?

A chemist wants a 0.100 m solution of naoh. She has 0.0550 mol naoh available. What volume of solution is needed to make the mixture?

What is the mass of water required to prepare 250.0 g of 10.0% copper (ii) sulfate solution?

Enny places a strip of pH paper into a solution. When she removes the pH paper, it has turned yellow-green. What should Jenny do next to determine the pH of her solution?

The electron affinity of Bi is - 94.6 kJ and the value for At is - 280 kJ. What is the approximate electron affinity for Po?

Practice of leaving the stalks of crops in the ground to anchor topsoil

Potassium (K) has an atomic number of 19. It often forms an ion by losing 1 electron. How many electrons would the ion have?

A sample of wood that originally contained 100 grams of carbon-14 now contains only 25 grams of carbon-14. approximately how many years ago was this sample part of a living tree?