Balance the following chemical formula: Al + O2 → Al2O3

A student analyze two diagrams of a nitrogen atom. both diagram shows seven protons in the nucleus, but the number of neutrons differered. what are two nitrogen atoms? (A) electrons (B) isotopes (C) covalent bonds (D) ionic bonds

Adding external protrusions to a wings (such as fuel pods, water tank, and missiles) would

Pizza dough is topped with sauce, cheese, pepperoni, sausage, mushrooms, bell peppers, and olives. What type of mixture is this pizza? A. Homogeneous B. Heterogeneous C. Colloid D. Suspension

What is the molarity of a solution that contains 4.53 moles of LiNo3 in 2.85 liters of solution?

What other substance containing sodium would be needed to make the buffer?

Write the name and formula of the compound made of magnesium and fluorine

How was or wasn't the scientific method followed in this experment

1‑propanol (nn ‑propanol) and 2‑propanol (isopropanol) form ideal solutions in all proportions. Calculate the partial pressure and the mole fraction (yy) of the vapor phase of each component in equilibrium with each of the given solutions at 25 °C.

4. suppose you are setting up a reaction that requires an iodide salt and are planning to use sodium iodide. however, at the last minute you find that you are out of sodium iodide, so you must use potassium iodide instead.

The Large Hadron Collider is a particle accelerator that may be able to provide insight into the most fundamental structure of matter. It is 27 km long.