What is the mass of 0.80 moles of Mg?

Show that 1 kJ/kg = 1000 m2/S2

Use the periodic table to write the electron configuration for barium (Ba) in noble-gas notation.

A sample containing 4.80 g of O2 gas has an initial volume of 15.0 L. What is the final volume, in liters, when each of the following changes occurs in the quantity of the gas at a constant pressure and temperature? A. A sample of 0.

If 355 mL of 1.50 M aluminum nitrate is added to an excess of sodium sulfate, how many grams of aluminum sulfate will be produced?

Which change will create a more dilute solution? increasing the amount of solute evaporating some of the solvent increasing the amount of solvent increasing the volume of the solution

What types of star can explode in a supernova

Which graph best shows the relationship between kelvin temperature and average kinetic energy?

Can matter exist at a temperature below absolute zero? Why or why not?

When group 17 elements become ions they have a charge of?

The first periodic table developed by Mendeleev was not completely accurate, but was a great step toward accomplishing the periodic table of elements we use today. Explain how the modern periodic table is credible today because of Mendeleev's work.