When a certain free element (which is solid at room temperature) is heated, it forms vapor molecules containing 2 atoms each. The gas effuses at a rate of 14.0 mL per minute. If neon gas effuses at a rate of 25.0 mL per minute, find the identity (name) of the element.

What is the mass of 0.46 mil of mgcl2

Use the periodic table to determine how many grams of oxygen would be required to react completely with 859.0 g c2h2

Why is it important for scientists to review and repeat the work of other scientists? 1.a scientific theory must be tested three times before it is proven. 2.the scientific method only applies to repeated experiments. 3.an experiment may have had errors that the scientists didn't recognize. 4.the results of individual scientists may be influenced by bias. 5.an experiment must be performed twice before the data can be analyzed.