Is mixing salt and pepper physical change or chemical change?

Complete combustion of a compound containing hydrogen and carbon produced 2.641 g of carbon dioxide and 1.442 grams of water as the only products. the molar mass of the hydrocarbon is 88.1 g/mol. what are the empirical and molecular formulas?

What happens to the movement of water when a cell is placed in a hypotonic solution?

Is nitrogen flammable? If so i want to build a patao gun using it as my fuel

Which state of matter has a definite volume but no specific shape

Suppose that 0.52 g of water at 25 ∘C condenses on the surface of a 51-g block of aluminum that is initially at 25 ∘C.

The standard enthalpies of formation of ions in aqueous solutions are obtained by arbitrarily assigning a value of zero to H + ions; that is, ΔH° [H f ⁺ (aq) ] = 0. (a) For the following reaction HCl (g) ⟶H₂O H⁺ (aq) + Cl⁻ (aq) ΔH° = - 74.

Heat is the total potential energy of a substance that can be transferred. TRUE FALSE

How does Earth's rotation axis cause seasons to change?

Which of the following can be considered evidence of a chemical change? (Click the 4 that apply) A. Evaportation B. Production of a new substance C. Production of Bubbles D. Melting E. Color change F. Dissolving G. Freezing H. Heat is released

The decomposition of hi has a rate constant of 1.80 * 10-3 m-1s-1. how much hi remains after 8.50 min if the initial concentration of hi is 4.78 m?