Which element consists of positive ions immersed in a "sea" of mobile electronsa) sulfur

b. nitrogen

c. calcium

d. chlorine?

How many atoms are there in 2 moles of oxygen

You find a little bit (0.150g) of a chemical marked Tri-Nitro-Toluene, and upon combusting it in oxygen, collect 0.204 g of CO2 and 0.030 g H2O (we'll assume that these are the products, along with nitrogen).

What is it called when copper can be stretched into s thin wire?

Saying "In 1492 Columbus sailed the ocean blue." Rhyming Keywords

A salt crystal has a mass 0.14mg, How many NaCl formula units does it contain? Express your answer using two significant figures.

What is the basic building block of matter to a chemist

Between magnesium and calcium, which has the highest ionization energy, and why?

approximately how many different cells can be found in a human cell? A. less than one hundred B. less than 10 C. more than a million D. more than one thousand

If I have a 200 L container filled with nitrogen at a pressure of 1.0 atm, how many moles of nitrogen are present at 25 degrees C?

In the periodic table, a set of properties repeats from