chemistry
posted by Hannah on .
A sample of metallic element X, weighing 4.315 g, combines with 0.4810 L of Cl2 gas (at normal pressure and 20.0¢ªC) to form the metal chloride with the formula XCl. If the density of Cl2 gas under these conditions is 2.948 g/L, what is the mass of the chlorine? The atomic weight of the chlorine is 35.453 amu. What is the atomic weight of X? what is the identity of X

See your post above.