How many grams of sodium make up 4.01*10^25 atoms

What happens to the reaction c2h6 + 137 kj when the temperature of the reaction is increased?

The formula weight of the compound, Al2 (SO4) 3.18H2O is: (a) 394.4 g (b) 666.4 g (c) 110,900 g (d) 466.8 g (e) 561.2 g

Which element is a metal that is in the liquid phase at STP?

If 3.0 grams of strontium-90 in a rock sample remained in 1989, approximately how many grams of strontium-90 were present in the original rock sample in 1933?

According to Hund's Rule, if you were filling the three orbitals at the 2p energy level, you would first put an electron in the 2px orbital, then in the 2py orbital, and then in the 2pz orbital;

To what chemical reaction class does this reaction belong? 2 mg (s) + o2 (g) 2 mgo (s)

Which best illustrates how particle arrangement changes when solids change into liquids

Express in scientific notation (6.0x10^4) (3.1x10^-1)

How do you measure the mass of a liquid?

Given the following information, calculate the mass for B-11. B-10 has a natural abundance of 19.9 percent, while B-11 has a natural abundance of 80.1 percent. The mass of B-10 is 10.013 amu.