A technician produced H_2 gas by reacting zinc (Zn) with sulfuric acid (H_2SO_4).The reaction was : 2Zn (s) + H_2SO_4 (aq). —>Zn_2SO_4 (aq) + H_2. He collected the hydrogen in a flask by water displacement. Atmospheric pressure was 737.2 torr and room temperature was 25.0^degree . What was the pressure of H_2 in the flask?

The plant food contains nh4)3po4 what tests would you run to verify the presence of the nh4 ion and the po4 ion

Esure to answer all parts. the equilibrium constant for the reaction ni2+(aq) + 6 nh3(aq) ⇌ ni(nh3)6 2+(aq) is kf = 5.6 × 108 at 25°c. (a) what is δg o at this temperature? (b) if standard-state concentrations of reactants and products are mixed, in which direction does the reaction proceed? (c) determine δg when [ni(nh3)62+] = 0.010 m, [ni2+] = 0.0010 m, and [nh3] = 0.0050 m. in which direction will the reaction proceed to achieve equilibrium? (a) × 10 j/mol (enter your answer in scientific notation.) (b) to the right. to the left. (c) × 10 j/mol (enter your answer in scientific notation.) to the right. to the left.

How can evidence from an experiment be explained in her relationship to the hypothesis? a. as a prediction b. as a question c. as an in inference d. as a conclusion