How many atoms of oxygen in 4 molecules of HNO3?

What is AGsystem for the system that is described by the following data? AHsystem = - 232 kJ, T = 293 K, ASsystem = 195 J/K AGsystem = AHsystem - TASsystem O-289 kJ O - 175 kJ O 256 kJ O 56,903 kJ

Is blood an homogenous or heterogeneous mixture?

Given the balanced equation: CaCO3 (s) + 2HCl (aq) - - >CaCl2 (aq) + H2O (l) + CO2 (g) What is the total number of moles of CO2 formed when 20. moles of HCl is completely consumed? (1) 5.0 mol (3) 20. mol (2) 10. mol (4) 40. mol

What is the percentage of radioactive nuclei left after 3 half lives pass?

A solution of a specific vitamin has? max = 275 nm and a concentration of 2.71 * 10-7 M. The absorbance of the solution at 275 nm is A = 0.150. What is the molar absorptivity of the vitamin at 275 nm? (sample pathlength = 1.00 cm)

Initially you dissolved all, or most, of the p-aminobenzoic acid in ethanol. then you slowly added sulfuric acid. as you did this, a large amount of white solid formed. during the course of the reaction, that white solid dissolved.

How do you know if a chemical reaction has occurred?

Why must a container or system be closed for equilibrium to be established?

What is the bond angle between the hydrogen atoms in an ammonia (NH₃) molecule?

In Experiment 1, the density of pure ethanol was found to be:Question 1 options:less than 0.793 g/mL. 0.793 g/mL. 0.999 g/mL. greater than 0.999 g/mL.