A sodium atom has a mass number of 23. Its atomic number is 11. How many electrons does a neutral sodium atom have?

In which equation does the term "heat" represent heat of fusion? (1) NaCl (s) + heat - - >NaCl (l) (2) NaOH (aq) + HCl (aq) - - >NaCl (aq) + H2O (l) + heat (3) H2O (l) + heat - - > H2O (g) (4) H2O (l) + HCl (g) - - >H3O + (aq) + Cl - (aq) + heat

Which mixture can be separated by using the equipment shown below?

An average tornado has a pressure of around 630 torr. What is this equivalent to in mmHg, atm and kPa? Show your work.

A solution is prepared by dissolving 4.68 g of nacl in enough water to produce 40.0 ml of solution. what is the molarity of nacl for the solution?

How many atoms are in 0.58 mol of Se?

The mass of one formula unit of SrCl2 is 158.52 amu. Based on this fact, what conclusion can you draw? A. A mole of SrCl2 particles has a mass of 158.52 g. B. 1 g of SrCl2 contains an average of 158.52 particles. C.

A blank is a special kind of mixture in which one substance is uniformly mixed into another

importance of pH value in daily life

How do metallic bonds differ from covalent and ionic bonds

Will ag2so4 precipitate when 100 ml of 5.0*10-2 m agno3 is mixed with 10 ml of 5.0*10-2mna2so4 solution?