322 l of hydrogen occupies volume of 197 l at stp. what was the initial pressure exerted on the hydrogen constant

What is the numerical value of Kc for the following reaction if the equilibrium mixture contains 0.035 M N2O4 and 0.19 M NO2? N2O4 (g) ⇌2NO2 (g)

How many valence electrons does an atom of any halogen have?

How would you calculate the % yield of hydrogen if 40.0 grams of magnesium react with an excess of nitric acid producing 1.70 grams of hydrogen gas. mg + 2hno3 → mg (no 3) 2 + h?

Which substance is an example of a colloid milk, tomato juice, sand and water, sugar and water?

Which is NOT an official SI unit of measure, kelvin, degree Celsius, second, liter

Which quantity represented by the symbol Ne

Electron configurations are like an address because?

What are the pros of using steel?

For an experiment, a student needs 100.0 mL of 0.4220 M NaCl. If the student starts with NaCl (s) and distilled water, which of the following pieces of laboratory glassware should the student use to prepare the solution with the greatest accuracy?

In a dilution, solvent is added to a given amount of a concentrated solution. What happened to the total concentration?