Which of the following metalloids is located in the sixth period of periodic table

What will happen if iron was heated in the air?

What set of compounds illustrates the law of multiple proportions. A. N2O, NO, NO2 B. NaCl, NaBr, Nal. C. CH4, CO, CCl4. D. all of these

Consider the reaction between TiO2 and C: TiO2 (s) + 2C (s) → Ti (s) + CO (g) A reaction vessel initially contains 10.0g each of the reactants.

What is the empirical formula for a substance containing 37.5 grams of carbon, c, 12.5 grams of hydrogen, h, and 50.0 grams of oxygen, o?

How many atoms of aluminum are there in a sample with a mass of 100.0 grams?

There is inverse relation between pressure and diffusion in liquid phase? •True •False

What do you need in order to do a stoichiometric calculation? (Choose multiple) Balanced Chemical Equation Molar masses of compounds involved The type of reaction taking place Oxidation Numbers

The correct mathematical expression for finding the molar solubility (s) of sn (oh) 2 is:

18. which bond is most polar? H--F H--Cl H--Br H--I

What kind of reaction is ca (s) + h3po4 (aq) ca3 (po4) 2 (s) + h2 (g)