What is the mass of a sample of NH3 containing 6.3 x 1024 molecules of NH3? (5 points) a 157 grams b 178 grams c 182 grams d 198 grams

Balance this equation: n2 + h2 > nh3, write the following molar ratios: n2 / n2 / nh3 h2 /

Using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 pb+2(aq) + 2cl -(aq). if the value of ksp was determined to be only 1.2 x 10-2: too much solid has dissolved. additional precipitate is forming. the solution is unsaturated. the ions are now combining to reduce their concentrations.

Why does his teacher ask him to balance the equation by including the correct coefficient