When conducting an experiment, a scientist should: (a) attempt to test every possibility (b) attempt to control the conditions (c) place no limits on the investigation (c) proceed without specific goals

state the stimulus and its response. is the response a voluntary action or an involuntary action? explain

For the reaction N₂ (g) + 3H₂ (g) ⇌ 2NH₃ (g) what is the value of Kc at 500 ∘C if the equilibrium concentrations are as follows: [H₂] = 0.50 M, [N₂] = 0.50 M, and [NH₃] = 2.1 M? Express the equilibrium constant to two significant figures.

What is the balanced molecular equation for the neutralization reaction between Hl and Ba (OH) 2 in aqueous solution

Can arsenic be broken down by a chemical change

How many of the following compounds are soluble in water? Cu (OH) 2

A solution is prepared by mixing 50.0 ml of 0.50 m cu (no3) 2 with 50.0 ml of 0.50 m co (no3) 2. sodium hydroxide is slowly added to the mixture. which precipitates first? [ksp (cu (oh) 2) = 2.2 * 10-20, ksp (co (oh) 2) = 1.3 * 10-15]

What does it mean when a mineral has a definite chemical composition? Select 2 choices. It always occurs in pure gorm. It always contains certain elements. It cannot form from living or once living materials.

During Trial 2, what allowed you to determine that aluminum was the limiting reactant? Check all that apply. All of the copper dissolved. The solution turned clear All of the aluminum dissolved.

49.7 mL of a solution of NaOH is needed to neutralize a solution that contains 1.86 g of H2504 in 20.00 mL of water. What is the molarity of the NaOH solution? H2SO4 + 2 NaOH - -> 2H2O + Na2SO4 1) 0.763 M 2) 0.0404 M 3) 1.13 M 4) 0.481 M 5) 0.

Which of the following is true about lonization? The ionic substances donate some of their atoms to the solvent. The covalent substance breaks apart into ions. The ionic substance breaks apart into ions.